FORM OF INTERNATIONAL UNDERWRITING AGREEMENT





                               100,800,000 SHARES

                   COMPANHIA DE SANEAMENTO DO PARANA - SANEPAR

                   NON-VOTING PREFERRED SHARES, NO PAR VALUE,
                    IN THE FORM OF AMERICAN DEPOSITARY SHARES

                      INTERNATIONAL UNDERWRITING AGREEMENT

                                                                   [Insert date]

CREDIT SUISSE FIRST BOSTON CORPORATION
SALOMON SMITH BARNEY INC.
ABN AMRO ROTHSCHILD LLC,
  As Representatives (the "Representatives")
  of the Several International Underwriters,


Dear Sirs:

         1. Introductory. Companhia de Saneamento do Parana - SANEPAR, a mixed
capital company (sociedade de economia mista) incorporated under the laws of
Brazil ("Company"), proposes to issue and sell ("International Offering") to the
several Underwriters named in Schedule A hereto ("International Underwriters")
10,080,000 American Depositary Shares ("International Firm Securities in ADS
form") , each American Depositary Share ("ADS") representing ten of the
Company's non-voting preferred shares, no par value ("Securities"), all or part
of which may be delivered in the form of preferred shares at the Underwriters'
election as hereinafter provided. The International Firm Securities in ADS form
and any Securities delivered in the form of preferred shares in lieu thereof as
herein provided are hereinafter called the "International Firm Securities". The
ADSs purchased by the International Underwriters will be evidenced by American
Depositary Receipts ("ADRs") to be issued pursuant to a Deposit Agreement dated
as of April __, 2002 ("Deposit Agreement"), entered into among the Company, The
Bank of New York, as depositary ("Depositary"), and all holders from time to
time of the ADRs.

         It is understood that the Company is concurrently entering into a
Brazilian Underwriting Agreement dated the date hereof ("Brazilian Underwriting
Agreement"),

with Banco de Investimentos Credit Suisse First Boston S.A., Banco Citibank
S.A., Banco ABN AMRO Real S.A., BB Banco de Investimento S.A. and the other
Brazilian underwriters named therein ("Brazilian Underwriters") relating to the
concurrent offering and sale of Securities ("Brazilian Securities") in Brazil
("Brazilian Offering").

         In addition, as set forth below, the Company proposes to issue and sell
to the International Underwriters, at the option of the International
Underwriters, an aggregate of not more than 2,159,100 additional ADSs
("International Optional Securities in ADS form"), all or part of which may be
delivered in the form of preferred shares at the International Underwriters'
election as hereinafter provided. The International Firm Securities and the
International Optional Securities are hereinafter called the "International
Securities"; the International Firm Securities and the Brazilian Securities are
hereinafter called the "Firm Securities". The International Securities and the
Brazilian Securities are collectively referred to as the "Offered Securities".
Whenever computations are contemplated herein that involve both numbers of ADSs
and numbers of shares of Securities in the form of preferred shares, they shall
be made on a consistent basis, by first converting the number of ADSs into the
number of Securities in the form of preferred shares they represent.

         To provide for the coordination of their activities, the International
Underwriters and the Brazilian Underwriters have entered into an Agreement
Between International Underwriters and Brazilian Underwriters which permits
them, among other things, to sell the Offered Securities to each other for
purposes of resale.

         Two forms of prospectus are to be used in connection with the offering
and sale of the International Securities and the Brazilian Securities
contemplated by the foregoing, one relating to the International Offering and
one relating to the Brazilian Offering. The prospectus relating to the Brazilian
Offering will be substantially similar to the prospectus for the International
Offering, except that it will be in the Portuguese language and for other
changes required to adopt it to conform to Brazilian capital markets practice
and Brazilian law. Except as the context may otherwise require, references
herein to any prospectus whether in preliminary or final form, and whether as
amended and supplemented, shall include the international and Brazilian versions
thereof.

         The Company hereby agrees with the several Underwriters as follows:

         2. Representations and Warranties of the Company. The Company
represents and warrants to, and agrees with, the several Underwriters that:

                  (a) The conditions for use of Form F-1 as set forth in the
         General Instructions thereto, have been satisfied.

                  (b) A registration statement (No. 333-85634) on Form F-1
         relating to the International Securities in the form of preferred
         shares, including a form of

         prospectus relating to the International Securities, has been filed
         with the Securities and Exchange Commission ("Commission") and either
         (i) has been declared effective under the Securities Act of 1933
         ("Act") and is not proposed to be amended or (ii) is proposed to be
         amended by amendment or post-effective amendment. If such registration
         statement (the "initial registration statement") has been declared
         effective, either (A) an additional registration statement (the
         "additional registration statement") relating to the International
         Securities in the form of preferred shares may have been filed with the
         Commission pursuant to Rule 462(b) ("Rule 462(b)") under the Act and,
         if so filed, has become effective upon filing pursuant to such Rule and
         the International Securities all have been duly registered under the
         Act pursuant to the initial registration statement and, if applicable,
         the additional registration statement or (B) such an additional
         registration statement is proposed to be filed with the Commission
         pursuant to Rule 462(b) and will become effective upon filing pursuant
         to such Rule and upon such filing the International Securities in the
         form of preferred shares will all have been duly registered under the
         Act pursuant to the initial registration statement and such additional
         registration statement. If the Company does not propose to amend the
         initial registration statement or if an additional registration
         statement has been filed and the Company does not propose to amend it,
         and if any post-effective amendment to either such registration
         statement has been filed with the Commission prior to the execution and
         delivery of this Agreement, the most recent amendment (if any) to each
         such registration statement has been declared effective by the
         Commission or has become effective upon filing pursuant to Rule 462(c)
         ("Rule 462(c)") under the Act or, in the case of the additional
         registration statement, Rule 462(b). For purposes of this Agreement,
         "Effective Time" with respect to the initial registration statement or,
         if filed prior to the execution and delivery of this Agreement, the
         additional registration statement means (i) if the Company has advised
         the Representatives that it does not propose to amend such registration
         statement, the date and time as of which such registration statement,
         or the most recent post-effective amendment thereto (if any) filed
         prior to the execution and delivery of this Agreement, was declared
         effective by the Commission or has become effective upon filing
         pursuant to Rule 462(c), or (ii) if the Company has advised the
         Representatives that it proposes to file an amendment or post-effective
         amendment to such registration statement, the date and time as of which
         such registration statement, as amended by such amendment or
         post-effective amendment, as the case may be, is declared effective by
         the Commission. If an additional registration statement has not been
         filed prior to the execution and delivery of this Agreement but the
         Company has advised the Representatives that it proposes to file one,
         "Effective Time" with respect to such additional registration statement
         means the date and time as of which such registration statement is
         filed and becomes effective pursuant to Rule 462(b). "Effective Date"
         with respect to the initial registration statement or the additional
         registration statement (if any) means the date of the Effective Time
         thereof. The initial registration statement, as amended at its
         Effective Time, including all

         information contained in the additional registration statement (if any)
         and deemed to be a part of the initial registration statement as of the
         Effective Time of the additional registration statement pursuant to the
         General Instructions of the Form on which it is filed and including all
         information (if any) deemed to be a part of the initial registration
         statement as of its Effective Time pursuant to Rule 430A(b) ("Rule
         430A(b)") under the Act, is hereinafter referred to as the "Initial
         Registration Statement". The additional registration statement, as
         amended at its Effective Time, including the contents of the initial
         registration statement incorporated by reference therein and including
         all information (if any) deemed to be a part of the additional
         registration statement as of its Effective Time pursuant to Rule
         430A(b), is hereinafter referred to as the "Additional Registration
         Statement". The Initial Registration Statement and the Additional
         Registration Statement are hereinafter referred to collectively as the
         "Registration Statements" and individually as a "Registration
         Statement". The form of prospectus relating to the International
         Securities, as first filed with the Commission pursuant to and in
         accordance with Rule 424(b) ("Rule 424(b)") under the Act or (if no
         such filing is required) as included in the Registration Statement, is
         hereinafter referred to as the "Prospectus." No document has been or
         will be prepared or distributed in reliance on Rule 434 under the Act.

                  (c) If the Effective Time of the Initial Registration
         Statement is prior to the execution and delivery of this Agreement:
         (i) on the Effective Date of the Initial Registration Statement, the
         Initial Registration Statement conformed in all respects to the
         requirements of the Act and the rules and regulations of the Commission
         ("Rules and Regulations") and did not include any untrue statement of a
         material fact or omit to state any material fact required to be stated
         therein or necessary to make the statements therein not misleading,
         (ii) on the Effective Date of the Additional Registration Statement (if
         any), each Registration Statement conformed, or will conform, in all
         respects to the requirements of the Act and the Rules and Regulations
         and did not include, or will not include, any untrue statement of a
         material fact and did not omit, or will not omit, to state any material
         fact required to be stated therein or necessary to make the statements
         therein not misleading, and (iii) on the date of this Agreement, the
         Initial Registration Statement and, if the Effective Time of the
         Additional Registration Statement is prior to the execution and
         delivery of this Agreement, the Additional Registration Statement each
         conforms, and at the time of filing of the Prospectus pursuant to Rule
         424(b) or (if no such filing is required) at the Effective Date of the
         Additional Registration Statement in which the Prospectus is included,
         each Registration Statement and the Prospectus will conform, in all
         respects to the requirements of the Act and the Rules and Regulations,
         and none of such documents includes, or will include, any untrue
         statement of a material fact or omits, or will omit, to state any
         material fact required to be stated therein or necessary to make the
         statements therein not misleading. If the Effective Time of the Initial
         Registration Statement is subsequent to the execution and delivery of


         this Agreement: on the Effective Date of the Initial Registration
         Statement, the Initial Registration Statement and the Prospectus will
         conform in all respects to the requirements of the Act and the Rules
         and Regulations, none of such documents will include any untrue
         statement of a material fact or will omit to state any material fact
         required to be stated therein or necessary to make the statements
         therein not misleading, and no Additional Registration Statement has
         been or will be filed. The two preceding sentences do not apply to
         statements in or omissions from a Registration Statement or the
         Prospectus based upon written information furnished to the Company by
         any International Underwriter through the Representatives specifically
         for use therein, it being understood and agreed that the only such
         information is that described as such in Section 7(b) hereof.

                  (d) A registration statement on Form F-6 (No. 333- ) relating
         to the ADSs has been filed with the Commission (such registration
         statement, including all exhibits thereto, as amended at the time such
         registration statement becomes effective, being hereinafter called the
         "ADS Registration Statement"); the ADS Registration Statement, as of
         its effective date, complied or will comply, and each amendment or
         supplement thereto, when it is filed with the Commission or becomes
         effective, as the case may be, will comply, in all material respects,
         with the applicable requirements of the Act and the Rules and
         Regulations, and did not or will not, as of its effective date, contain
         any untrue statement of a material fact or omit to state a material
         fact required to be stated therein or necessary to make the statements
         therein not misleading.

                  (e) The Company has been duly incorporated and is validly
         existing as a mixed capital company (sociedade de economia mista) in
         good standing under the laws of Brazil, with full power and authority
         (corporate and other) to own its properties and conduct its business as
         described in the Prospectus.

                  (f) The Company does not have any subsidiaries.

                  (g) The Company has an authorized and issued capitalization as
         set forth in the Prospectus; the Offered Securities, including those
         represented by the ADSs, and all other outstanding shares of capital
         stock of the Company have been duly authorized; all outstanding shares
         of capital stock of the Company are, and, when the Offered Securities
         have been delivered and paid for in accordance with this Agreement and
         the Brazilian Underwriting Agreement on each Closing Date (as defined
         below), such Offered Securities, including those represented by the
         ADSs, will have been, validly issued, fully paid and nonassessable and
         will conform to the description thereof contained in the Prospectus;
         and the shareholders of the Company have no preemptive or similar
         rights with respect to the Securities, including those represented by
         the ADSs, other than rights that have been waived or otherwise
         extinguished with respect to the Offered Securities; except as set
         forth in the Prospectus, there are no outstanding securities

         convertible into or exchangeable for, or warrants, rights or options to
         purchase from the Company, or obligations of the Company to issue, any
         class of capital stock of the Company or any such convertible or
         exchangeable securities or any such warrants, rights or options; upon
         payment and delivery of the Offered Securities being sold by the
         Company pursuant to this Agreement and the Brazilian Underwriting
         Agreement, the International Underwriters and the Brazilian
         Underwriters, respectively, or other persons in whose names ADSs or
         Securities are registered will acquire valid and marketable title to
         such ADSs or Securities, in each case free and clear of all liens,
         encumbrances, preemptive rights and other claims; and there are no
         restrictions on transfers of the shares of the Company's capital stock,
         including, without limitation, the Offered Securities (other than
         restrictions under U.S. and Brazilian securities laws as are generally
         applicable).

                  (h) Upon the deposit of the Securities to be issued by the
         Company with or for the account of the Depositary pursuant to the
         Deposit Agreement against issuance of the ADRs evidencing ADSs, all
         right, title and interest in such Securities, subject to the terms of
         the Deposit Agreement, will be transferred to the Depositary free and
         clear of all liens, encumbrances, security interests or claims.

                  (i) The Company has full power and authority to enter into the
         Deposit Agreement, and the Deposit Agreement has been duly authorized,
         executed and delivered by the Company and, when duly and validly
         authorized, executed and delivered by the Depositary, will constitute a
         valid and legally binding agreement of the Company enforceable against
         the Company in accordance with its terms and subject to bankruptcy,
         insolvency, fraudulent transfer, reorganization, moratorium and similar
         laws of general applicability relating to or affecting creditors'
         rights and to general equity principles; upon due issuance by the
         Depositary of ADRs evidencing ADSs against the deposit of Securities in
         respect thereof in accordance with the Deposit Agreement, such ADRs
         will be duly and validly issued and the holders thereof will be
         entitled to the rights specified therein and in the Deposit Agreement;
         the ADSs representing the Securities will be freely transferable; and
         the Deposit Agreement and the ADRs conform to the descriptions thereof
         contained in the Registration Statement and the Prospectus.

                  (j) Except as disclosed in the Prospectus, there are no
         contracts, agreements or understandings between the Company and any
         person that would give rise to a valid claim against the Company or any
         International Underwriter or Brazilian Underwriter for a brokerage
         commission, finder's fee or other like payment in connection with this
         offering.
                  (k) Except for the Registration Rights Agreement to be entered
         into among the Company and certain of its shareholders ("Registration
         Rights Agreement"), there are no contracts, agreements or
         understandings between the Company and

         any person granting such person the right to require the Company to
         file a registration statement under the Act with respect to any
         securities of the Company owned or to be owned by such person or to
         require the Company to include such securities in the securities
         registered pursuant to a Registration Statement or the ADS Registration
         Statement or in any securities being registered pursuant to any other
         registration statement filed by the Company under the Act.

                  (l) The ADSs have been approved for listing on the New York
         Stock Exchange subject to notice of issuance, and the Offered
         Securities in the form of preferred shares, including those deposited
         in respect of ADSs, have been approved for listing on the Bolsa de
         Valores de Sao Paulo - BOVESPA ("Sao Paulo Stock Exchange").

                  (m) No consent, approval, authorization, or order of, or
         filing with, any governmental agency or body or any court is required
         for the consummation of the transactions contemplated by the Deposit
         Agreement, this Agreement or the Brazilian Underwriting Agreement in
         connection with the issuance and sale of the Offered Securities by the
         Company, including the deposit of any Securities represented by the
         ADSs with the Depositary and the issuance of the ADRs evidencing the
         ADSs, except (i) as may be required, and will have been obtained or
         made prior to or at the First Closing Date (as defined below), from the
         Banco Central do Brasil (the Brazilian Central Bank, or the "Central
         Bank") and the Comissao de Valores Mobiliarios (the Brazilian
         Securities Commission, or the "CVM") relating to the Deposit Agreement,
         (ii) as may be required, and will have been obtained or made prior to
         or at the First Closing Date, from the CVM relating to the offering of
         Securities as provided for in this Agreement and in the Brazilian
         Underwriting Agreement, (iii) as may be required, and will have been
         obtained or made prior to or at the First Closing Date, from the
         Central Bank relating to the payment of the fees and commissions and
         the reimbursement of expenses, in each case as contemplated in this
         Agreement and in the Deposit Agreement, (iv) for the registration of
         the Securities and the ADSs under the Act and such consents, approvals,
         authorizations, registrations or qualifications as may be required
         under the U.S. Securities Exchange Act of 1934, as amended (the
         "Exchange Act") and (v) such as may be required under state securities
         laws.

                  (n) Except as disclosed in the Prospectus (including, without
         limitation, the tax on payments of interest on shareholders' equity
         described therein), under current laws and regulations of Brazil and
         any political subdivision thereof, all dividends and other
         distributions (including, without limitation, the payments of interest
         on shareholders' equity described therein) declared and payable on the
         Offered Securities, including those represented by the ADSs, may be
         paid by the Company to the holder thereof in Brazilian reais that may
         be converted into foreign currency and freely transferred out of
         Brazil, and all such payments made to holders thereof who are
         non-residents of Brazil will not be subject to income,

         withholding or other taxes under laws and regulations of Brazil or any
         political subdivision or taxing authority thereof or therein and will
         otherwise be free and clear of any other tax, duty, withholding or
         deduction in Brazil or any political subdivision or taxing authority
         thereof or therein and without the necessity of obtaining any
         governmental authorization in Brazil or any political subdivision or
         taxing authority thereof or therein.

                  (o) The execution, delivery and performance of the Deposit
         Agreement, this Agreement and the Brazilian Underwriting Agreement, and
         the issuance and sale of the Offered Securities, including the deposit
         of any Securities represented by the ADSs with the Depositary and the
         issuance of the ADRs evidencing the ADSs, will not (i) conflict with,
         result in the creation or imposition of any lien, charge or encumbrance
         upon any of the property or assets of the Company pursuant to the terms
         of, result in a breach or violation of any of the terms and provisions
         of, or constitute a default under, any concession agreement, indenture,
         mortgage, deed of trust, loan agreement or other agreement or
         instrument to which the Company is a party or by which the Company is
         bound or to which any of the properties of the Company is subject, or
         (ii) result in a breach or violation of any of the terms and provisions
         of, or constitute a default under, any law, any statute, any rule,
         regulation, judgment, decree or order of any government, governmental
         agency or body or any court, domestic or foreign, having jurisdiction
         over the Company or any of its properties or the rules and regulations
         of the New York Stock Exchange or the Sao Paulo Stock Exchange, or the
         charter or by-laws of the Company, and the Company has full power and
         authority to authorize, issue and sell the Offered Securities,
         including the ADSs, as contemplated by the Deposit Agreement, this
         Agreement and the Brazilian Underwriting Agreement, respectively.

                  (p) The Company has full power and authority to enter into
         this Agreement and the Brazilian Underwriting Agreement, and each of
         this Agreement and the Brazilian Underwriting Agreement has been duly
         authorized, executed and delivered by the Company and constitutes a
         valid and binding agreement of the Company, enforceable against the
         Company in accordance with its terms, subject to bankruptcy,
         insolvency, fraudulent transfer, reorganization, moratorium and similar
         laws of general applicability relating to or affecting creditors'
         rights and to general equity principles, and except that rights to
         indemnification may be limited by public policy considerations.

                  (q) Except as disclosed in the Prospectus, the Company has
         good and marketable title to all real properties and interests in real
         property (including, without limitation, easements for installing,
         operation and maintenance of pipes, pumps and accessory equipment) and
         all other properties and assets owned by it, in each case free from
         liens, encumbrances and defects ("Liens") that would materially affect
         the value thereof or materially interfere with the use made or to

         be made thereof by it; and except as disclosed in the Prospectus, the
         Company holds all leased real or personal properties under valid and
         enforceable leases free of any Liens that would materially interfere
         with the use made or to be made thereof by it, and the Company has not
         received any notice of any material claim of any sort that has been
         asserted by anyone adverse to the rights of the Company in or to any
         owned property or interests therein or under any of the leases
         described above, or affecting or questioning the rights thereof to the
         continued possession of the owned property or interests therein or the
         leased premises under any such lease except as would not individually
         or in the aggregate have a material adverse effect on the condition
         (financial or other), business, properties or results of operations of
         the Company ("Material Adverse Effect").

                  (r) The Company possesses adequate concessions, licenses,
         franchises, certificates, authorities or permits or other approvals or
         authorizations (collectively, "Approvals") issued by appropriate
         governmental agencies or bodies necessary to conduct the business now
         operated by it or to own or lease its property or assets, and such
         concessions, licenses, franchises, certificates, authorities, permits
         and other approvals and authorizations are in full force and effect,
         except for Approvals, the non possession of which or non effectiveness
         of which would not individually or in the aggregate have a Material
         Adverse Effect, and has not received any notice of proceedings relating
         to the revocation or modification of any such concession, license,
         franchise, certificate, authority or permit or other approval or
         authorization that, if determined adversely to the Company, would
         individually or in the aggregate have a Material Adverse Effect.

                  (s) No labor dispute with the employees of the Company, or
         with any labor union, exists or, to the knowledge of the Company, is
         imminent that might have a Material Adverse Effect.

                  (t) Except as disclosed in the Prospectus, the Company owns,
         possesses or can acquire on reasonable terms, adequate trademarks,
         trade names and other rights to inventions, know-how, patents,
         copyrights, confidential information and other intellectual property
         (collectively, "intellectual property rights") necessary to conduct the
         business now operated by it, or presently employed by it, except for
         any intellectual property rights, the failure of which to be owned,
         possessed or acquired would not, individually or in the aggregate, have
         a Material Adverse Effect, and has no reason to believe that the
         conduct of its business will conflict with, and has not received any
         notice of infringement of or conflict with, asserted rights of others
         with respect to any intellectual property rights that, if determined
         adversely to the Company, would individually or in the aggregate have a
         Material Adverse Effect.

                  (u) Except in each case as disclosed in the Prospectus, the
         Company is not in violation of any statute, any rule, regulation,
         decision or order of any governmental agency or body or any court,
         domestic or foreign, relating to the

         use, disposal or release of hazardous or toxic substances or relating
         to the protection or restoration of the environment or human exposure
         to hazardous or toxic substances (collectively, "environmental laws"),
         and the Company does not own or operate any real property contaminated
         with any substance that is subject to any environmental laws, nor is
         liable for any off-site disposal or contamination pursuant to any
         environmental laws, nor is subject to any claim relating to any
         environmental laws, which violation, contamination, liability or claim
         would individually or in the aggregate have a Material Adverse Effect;
         and, except as disclosed in the Prospectus, the Company is not aware of
         any pending investigation which might lead to such a claim. The costs
         and liabilities associated with environmental laws (including any
         capital or operating expenditures required for clean-up, closure of
         properties or compliance with environmental laws or any permit, license
         or approval, any related constraints on operating activities and any
         potential liabilities to third parties) would not, individually or in
         the aggregate, have a Material Adverse Effect.

                  (v) There are no pending actions, suits or proceedings against
         or affecting the Company or any of its properties that, if determined
         adversely to the Company, would individually or in the aggregate have a
         Material Adverse Effect, or would materially and adversely affect the
         ability of the Company to perform its obligations under the Deposit
         Agreement, this Agreement or the Brazilian Underwriting Agreement, or
         which are otherwise material in the context of the sale of the Offered
         Securities; and no such actions, suits or proceedings are threatened
         or, to the Company's knowledge, contemplated.

                  (w) The financial statements included in each Registration
         Statement and the Prospectus present fairly the financial position and
         shareholders' equity of the Company as of the dates shown and their
         results of operations and cash flows for the periods shown, subject to,
         in the case of any interim financial statements, any normal recurring
         year-end adjustments; and, except as otherwise disclosed in the
         Prospectus, such financial statements have been prepared in conformity
         with the generally accepted accounting principles in the United States
         applied on a consistent basis.

                  (x) Except as disclosed in or contemplated by the Prospectus,
         since the date of the latest audited financial statements included in
         the Prospectus there has been no (i) change in the capital stock of the
         Company or increase in the short-term debt or the long-term debt
         (including the current portion thereof) of the Company or (ii) material
         loss or interference with its business from fire, explosion, flood or
         other calamity, whether or not covered by insurance, or from any labor
         dispute or court or government action, order or decree or (iii)
         [material adverse change, nor any development or event involving a
         prospective material adverse change, in the general affairs, condition
         (financial or other), business, properties, prospects, management,
         shareholders' equity or results of operations of

         the Company], and, except as disclosed in or contemplated by the
         Prospectus, the Company has not purchased any of its outstanding
         capital stock and there has been no dividend or distribution of any
         kind declared, paid or made by the Company on any class of its capital
         stock.

                  (y) The Company is not and, after giving effect to the
         offering and sale of the Offered Securities and the application of the
         proceeds thereof as described in the Prospectus, will not be an
         "investment company" as defined in the Investment Company Act of 1940.

                  (z) Except as described in the Prospectus, the Company has not
         sold or issued any Securities during the six-month period preceding the
         date of the Prospectus, including any sales pursuant to Rule 144A
         under, or under Regulations D of, the Act.

                  (aa) Ernst & Young, who have certified the financial
         statements of the Company, whose report appears in the Prospectus and
         who have delivered the letter referred to in Section 6(a) hereof, are
         independent public accountants with respect to the Company as required
         by the Act and the Rules and Regulations.

                  (bb) There are no contracts or other documents which are
         required to be described in the Prospectus or filed as exhibits to the
         Registration Statements by the Act or by the Rules and Regulations
         which have not been described in the Prospectus or filed as exhibits to
         the Registration Statements.

                  (cc) No relationship, direct or indirect, exists between or
         among the Company on the one hand, and the directors, officers,
         shareholders, customers or suppliers of the Company on the other hand,
         which is required to be described in the Prospectus which is not so
         described.

                  (dd) The Company has duly filed with the appropriate taxing
         authorities all material tax returns, reports and other information
         required to be filed by it through the date hereof and has paid all
         taxes due thereon and all assessments received by it to the extent that
         such taxes have become due, except for any such taxes that are being
         contested in good faith and for which adequate reserves are being
         maintained in accordance with the generally accepted accounting
         principles in the United States and except for any such failure to file
         or failure to pay as would not, individually or in the aggregate, have
         a Material Adverse Effect, and each such tax return, report or other
         information was, when filed, accurate and complete in all material
         respects; and, except as described in the Prospectus, there is no tax
         deficiency that has been threatened or asserted against the Company or
         which might reasonably be expected to be asserted against the Company,
         which would result in a Material Adverse Effect.

                  (ee) To ensure the legality, validity, enforceability or
         admissibility into evidence of each of this Agreement, the Brazilian
         Underwriting Agreement or the Deposit Agreement in Brazil or any
         political subdivision thereof, it is not necessary that this Agreement,
         the Brazilian Underwriting Agreement or the Deposit Agreement be
         submitted to, filed or recorded with any court or other authority in
         Brazil or any political subdivision thereof or that any tax, imposition
         or charge be paid in Brazil or any political subdivision thereof on or
         in respect of this Agreement, the Brazilian Underwriting Agreement or
         the Deposit Agreement, other than court costs, including, without
         limitation, filing fees and deposit to guarantee judgment required by
         Brazilian law and regulations, except that (A) the signature of the
         parties to this Agreement and the Deposit Agreement and any other
         document that may be deemed to be or become a party to any such
         agreements shall have been notarized by a notary public licensed as
         such under the law of the place of signing and the signature of such
         notary public (to the extent not located within Brazil) shall have been
         authenticated by the Brazilian consular office and each of this
         Agreement and the Deposit Agreement shall have been registered with the
         appropriate Registry of Deeds and Documents in Brazil, (B) each of this
         Agreement and the Deposit Agreement shall have been translated into
         Portuguese by a sworn translator in Brazil and (C) this Agreement and
         the Deposit Agreement, together with their respective sworn Portuguese
         translations, shall have been filed with the CVM and the Deposit
         Agreement shall have been filed with the Central Bank.

                  (ff) No stock exchange, stamp or other issuance or transfer
         taxes or duties and no capital gains, income, withholding or other
         taxes are payable by or on behalf of the International Underwriters or
         the Brazilian Underwriters to Brazil or to any political subdivision or
         taxing authority thereof or therein in connection with (i) the entering
         into or performing this Agreement and the Brazilian Underwriting
         Agreement or receiving payments hereunder and thereunder, and the
         issuance or sale of the ADSs and the Securities by the Company in
         accordance with this Agreement and the Brazilian Underwriting
         Agreement, (ii) the deposit with the Depositary of the Securities
         against the issuance of ADRs evidencing the ADSs, (iii) the delivery of
         the ADSs to or for the respective accounts of the International
         Underwriters in the manner contemplated herein, or (iv) the sale and
         delivery outside Brazil by the International Underwriters of the ADSs
         to the purchasers thereof, other than Brazilian income tax regarding
         the International Underwriters whose income is otherwise subject to
         taxation in Brazil and Brazilian withholding tax at a rate of 15% (or
         25% if the beneficiary is domiciled in a country that does not impose
         income tax or where such tax is imposed at a maximum rate of 20%) on
         any payments made by the Company to the International Underwriters in
         respect of (A) the underwriting commission and (B) fees, costs and
         expenses specified in Section 5(h) hereof, in each case as to which
         withholding tax the Company shall pay additional amounts pursuant to
         Section 5(i) hereof.

                  (gg) Since the date as of which information is given in the
         Prospectus through the date hereof, and except as may otherwise be
         disclosed in or contemplated by the Prospectus, the Company has not
         issued or granted any securities, incurred any material liability or
         obligation, direct or contingent (other than liabilities and
         obligations which were incurred in the ordinary course of business),
         nor entered into any material transaction not in the ordinary course of
         business.

                  (hh) The Company (i) is not, and with the giving of notice or
         lapse of time or both would not be, in violation of or in default under
         its charter or by-laws, (ii) is not in default, and no event has
         occurred which, with notice or lapse of time or both, would constitute
         such a default, in the due performance or observance of any term,
         covenant or condition contained in any concession agreement, any
         material agreement, indenture, mortgage or other agreement or
         instrument to which it is a party or by which it is bound or to which
         any of its property or assets is subject, or (iii) is not in violation
         of any law, governmental rule, regulation or court decree to which it
         or its property or assets may be subject; except for, in the case of
         each of clause (ii) and (iii), for such defaults, events, violations
         and failures which would not, individually or in the aggregate, have a
         Material Adverse Effect.

                  (ii) The Company (i) makes and keeps accurate books and
         records and (ii) maintains adequate internal accounting controls, in
         each case, to permit preparation of its financial statements and to
         maintain issued and ongoing accountability for its assets.

                  (jj) Neither the Company nor, to the Company's knowledge, any
         director, officer, agent, employee or other affiliate or other person
         associated with or acting on its or the behalf of the Company, has made
         any unlawful contribution, gift or other unlawful payment or incurred
         any unlawful expense relating to political activity; made any direct or
         indirect unlawful payment to any foreign or domestic government
         official or employee from corporate funds; made any other unlawful
         payment or taken any other unlawful action which would have been in
         violation of any provision of applicable Brazilian law or of the U.S.
         Foreign Corrupt Practices Act of 1977, as amended ("FCPA"), had any of
         such persons been subject to the FCPA; or made any bribe, rebate,
         payoff, influence payment, kickback or other unlawful payment.

                  (kk) The Company has not entered and will not enter into any
         contractual arrangement with respect to the distribution of the ADSs or
         the Securities that are to be sold hereunder or under the Brazilian
         Underwriting Agreement except for this Agreement and the Brazilian
         Underwriting Agreement and the other arrangements contemplated herein
         and therein.

                  (ll) In connection with the International Offering and the
         Brazilian Offering, until the International Underwriters shall have
         notified the Company of the completion of any distribution of the ADSs
         outside of Brazil, neither the Company nor any of its affiliates has or
         will, either alone or with one or more other persons, bid for or
         purchase for any account in which it or any of its affiliates has a
         beneficial interest in any Securities or any security of the same class
         or series as the Securities or any right to purchase any such
         securities of the Company ("Securities Equivalents") or attempt to
         induce any person to purchase any Securities or Securities Equivalents,
         and neither it nor any of its affiliates will make bids or purchases
         for the purpose of creating actual, or apparent, active trading in or
         of raising the price of the Securities or Securities Equivalents.
         Neither the Company nor any of its affiliates has taken or will take,
         directly or indirectly, any action designed to or which might
         reasonably be expected to cause or result in stabilization or
         manipulation of the price of any security of the Company to facilitate
         the sale or resale of the ADSs or the Securities in connection with the
         International Offering and the Brazilian Offering.

                  (mm) Except as set forth in the Prospectus, there are no
         limitations under Brazilian law on the rights of holders of Securities,
         ADSs or ADRs evidencing ADSs to hold or vote or transfer their
         respective securities, and no approvals are currently required in
         Brazil (including any foreign exchange or foreign currency approvals)
         in order for the Company to pay dividends declared by the Company to
         the holders of Securities or ADRs, including the Depositary.

                  (nn) The Company and its obligations under this Agreement, the
         Brazilian Underwriting Agreement and the Deposit Agreement are subject
         to civil and commercial law and to suit and neither the Company nor any
         of its properties, assets or revenues has any right of immunity under
         Brazilian, New York or U.S. Federal law from any legal action, suit or
         proceeding, from the giving of any relief in any such legal action,
         suit or proceeding, from setoff or counterclaim, from the jurisdiction
         of any Brazilian, New York or U.S. Federal court, from service of
         process, attachment upon or prior to judgment, or attachment in aid of
         execution of judgment, or from execution of a judgment, or other legal
         process or proceeding for the giving of any relief or for the
         enforcement of a judgment, in any such court, with respect to its
         obligations, liabilities or any other matter under or arising out of or
         in connection with this Agreement, the Brazilian Underwriting Agreement
         and the Deposit Agreement, and, to the extent that the Company or any
         of its properties, assets or revenues may have or may hereafter become
         entitled to any such right of immunity in any such court in which
         proceedings may at any time be commenced, the Company has waived or
         will waive such right to the extent permitted by law and has consented
         to such relief and enforcement.

                  (oo) The Company has the power to submit, and pursuant to this
         Agreement and the Deposit Agreement, has legally, validly, effectively
         and irrevocably submitted to the personal jurisdiction of any U.S.
         Federal or state courts sitting in New York City, and has the power to
         designate, appoint and empower, and pursuant to this Agreement and the
         Deposit Agreement, has legally, validly and effectively designated,
         appointed and empowered, an agent for service of process in any action,
         suit or proceeding based on or arising under this Agreement and the
         Deposit Agreement in any U.S. federal or state courts sitting in New
         York City.

                  (pp) The Company holds 342 concessions in the state of Parana
         for the provision of water and wastewater services, and all such
         concessions are valid and binding upon the Company and the relevant
         granting authorities thereof, enforceable in accordance with their
         respective terms, and are in full force and effect, and the Company has
         not received any notice of and it is not aware of proceedings relating
         to the revocation or modification of any such concession or the related
         concession agreement.

                  (qq) The Company is not, and upon the sale of the
         International Securities as contemplated in the Prospectus it will not
         be, and intends to conduct its operations so it does not become (at any
         time after the sale of the International Securities contemplated by the
         Prospectus), a passive foreign investment company ("PFIC") within the
         meaning of Section 1297(a) of the United States Internal Revenue Code
         of 1986, as amended (the "Code").

                  (rr) The Company is neither a "foreign personal holding
         company" nor a "foreign investment company" within the meaning of
         Sections 552(a) and 1246(b), respectively, of the Code.

                  (ss) All outstanding shares of the capital stock of the
         Company, and all securities convertible into or exercisable or
         exchangeable for shares of the capital stock of the Company, that are
         held by the Company's executive officers, directors or holders of more
         than 5% of the shares of the capital stock of the Company are subject
         to valid and binding agreements having substantially the form of
         [Exhibit A] hereto (the "Lock-up Agreements") that restrict the holders
         thereof from offering, selling, contracting to sell, pledging or
         otherwise disposing of, directly or indirectly, any shares of the
         Company's capital stock or ADSs representing such shares or securities
         convertible into or exchangeable or exercisable for any shares of the
         Company's capital stock or ADSs representing such shares, entering into
         a transaction that would have the same effect, or entering into any
         swap, hedge or other arrangement that transfers, in whole or in part,
         any of the economic consequences of ownership of the shares of the
         Company's capital stock or ADSs representing such shares, whether any
         of these transactions are to be settled by delivery of shares of the
         Company's capital stock,

         ADSs representing such shares or other securities, in cash or
         otherwise, or publicly disclosing the intention to make any offer,
         sale, pledge or disposition, or to enter into any transaction, swap,
         hedge or other arrangement, without, in each case, the prior written
         consent of the Representatives for a period of 180 days after the date
         the Prospectus.

                  (tt) As of , the Company had current and accumulated earnings
         and profits, as calculated for U.S. Federal income tax purposes, in an
         amount in excess of $ .

         3. Purchase, Sale and Delivery of Offered Securities. On the basis of
the representations, warranties and agreements herein contained, but subject to
the terms and conditions herein set forth, the Company agrees to sell to the
International Underwriters, and the International Underwriters agree, severally
and not jointly, to purchase from the Company, at a purchase price of U.S.$ per
ADS, the respective numbers of ADSs constituting the International Firm
Securities set forth opposite the names of the International Underwriters in
Schedule A hereto, it being understood that the International Underwriters may
elect to receive all or a portion of their allotments in the form of Securities
in the form of preferred shares as provided for below.

         The Company will deliver the International Firm Securities in ADS form
to the Representatives for the accounts of the International Underwriters
against payment of the purchase price Federal (same day) funds by wire transfer
to an account at a bank designated by the Company and reasonably acceptable to
the Representatives, at the office of Cravath, Swaine & Moore, 825 Eighth
Avenue, New York, NY 10019, at 9:00 A.M., New York time, on May [ ], 2002, or at
such other time not later than seven full business days thereafter as the
Representatives and the Company determine, such time being herein referred to as
the "First Closing Date". For purposes of Rule 15c6-1 under the Exchange Act,
the First Closing Date (if later than the otherwise applicable settlement date)
shall be the settlement date for payment of funds and delivery of securities for
all the International Securities sold pursuant to the International Offering.
The International Firm Securities in ADS form shall be delivered in the form of
one or more global ADRs,

in registered definitive form, to be deposited with The Depository Trust
Company, or in such other manner as shall be agreed between the Company and the
Representatives, in such denominations and registered in such names as the
Representatives request and will be made available for checking and packaging at
the above office at least 24 hours prior to the First Closing Date.

         In addition, upon written notice from the Representatives given to the
Company from time to time not more than 30 days subsequent to the date of the
Prospectus, the International Underwriters may purchase all or less than all of
the International Optional Securities at the purchase price per ADS to be paid
for the International Firm Securities. The Company agrees to sell to the
International Underwriters such International Optional Securities and the
Underwriters agree, severally and not jointly, to purchase such International
Optional Securities as are indicated in any such written notice. Such
International Optional Securities shall be purchased for the account of each
International Underwriter in the same proportion as the number of ADSs, without
giving effect to the taking of Securities in the form of preferred shares in
lieu thereof, constituting the International Firm Securities set forth opposite
such International Underwriter's name bears to the total number of ADSs, without
giving effect to the taking of Securities in the form of preferred shares in
lieu thereof, constituting the International Firm Securities (subject to
adjustment by the Representatives to eliminate fractions) and may be purchased
by the International Underwriters only for the purpose of covering
over-allotments made in connection with the sale of the International Firm
Securities. No International Optional Securities shall be sold or delivered
unless the International Firm Securities previously have been, or simultaneously
are, sold and delivered. The right to purchase the International Optional
Securities or any portion thereof, to the extent not previously exercised may be
surrendered and terminated at any time upon notice by the Representatives on
behalf of the International Underwriters to the Company. It is understood that
the Representatives are authorized to make payment for and accept delivery of
such International Optional Securities on behalf of the International
Underwriters pursuant to the terms of the Representatives' instructions to the
Company.

         Each time for the delivery of and payment for the International
Optional Securities, being herein referred to as an "Optional Closing Date",
which may be the First Closing Date (the First Closing Date and each Optional
Closing Date, if any, being sometimes referred to as a "Closing Date"), shall be
determined by the Representatives but shall be not later than three full
business days after written notice of election to purchase International
Optional Securities is given. The Company will deliver the International
Optional Securities in ADS form being purchased on each Optional Closing Date to
the Representatives for the accounts of the several International Underwriters,
against payment of the purchase price therefor in Federal (same day) funds by
wire transfer to an account at a bank designated by the Company and reasonably
acceptable to the Representatives, at the office of Cravath, Swaine & Moore, 825
Eighth Avenue, New York, NY 10019. The International Optional Securities in ADS
form will be in the same form as the International Firm Securities in ADS form,
in such denominations and

registered in such names as the Representatives request upon reasonable notice
prior to such Optional Closing Date and will be made available for checking and
packaging at the above office, at a reasonable time in advance of such Optional
Closing Date.

         With respect to all or any portion of the International Securities in
ADS form to be purchased and sold hereunder, the Representatives, on behalf of
the several International Underwriters, may elect to have Securities in the form
of preferred shares in respect of such International Securities delivered and
paid for hereunder, in lieu of, and in satisfaction of the Company's obligation
to sell to the several International Underwriters, and the several International
Underwriters' obligations to purchase, such International Securities in ADS
form. Notice of such election with respect to any Closing Date shall be given by
the Representatives to the Company at least 48 hours prior to the related
Closing Date. The purchase price for any Securities in the form of preferred
shares so delivered in lieu of any International Securities in ADS form shall be
the purchase price in U.S. dollars which would otherwise have been applicable
hereunder to such International Securities in ADS form, adjusted on the basis of
the ratio of ten shares of Securities in the form of preferred shares to one
ADS. The International Securities in the form of preferred shares so to be
delivered will be delivered or caused to be delivered to the Representatives for
the accounts of the International Underwriters at the office of Cravath, Swaine
& Moore, 825 Eighth Avenue, New York, NY 10019. The certificates for
International Securities in the form of preferred shares will be in definitive
form, in such denominations and registered in such names as the Representatives
request and will be made available for checking and packaging at the above
office of Cravath, Swaine & Moore a reasonable time in advance of the related
Closing Date.

         4. Offering by Underwriters. It is understood that the several
Underwriters propose to offer the International Securities for sale to the
public as set forth in the Prospectus.

         5. Certain Agreements of the Company. The Company agrees with the
several International Underwriters that:

                  (a) If the Effective Time of the Initial Registration
         Statement is prior to the execution and delivery of this Agreement, the
         Company will file the Prospectus with the Commission pursuant to and in
         accordance with subparagraph (1) (or, if applicable and if consented to
         by the Representatives, subparagraph (4)) of Rule 424(b) not later than
         the earlier of (A) the second business day following the execution and
         delivery of this Agreement or (B) the fifteenth business day after the
         Effective Date of the Initial Registration Statement.

                  The Company will advise the Representatives promptly of any
         such filing pursuant to Rule 424(b). If the Effective Time of the
         Initial Registration Statement is prior to the execution and delivery
         of this Agreement and an additional registration statement is necessary
         to register a portion of the

         International Securities under the Act but the Effective Time thereof
         has not occurred as of such execution and delivery, the Company will
         file the additional registration statement or, if filed, will file a
         post-effective amendment thereto with the Commission pursuant to and in
         accordance with Rule 462(b) on or prior to 10:00 P.M., New York time,
         on the date of this Agreement or, if earlier, on or prior to the time
         the Prospectus is printed and distributed to any International
         Underwriter, or will make such filing at such later date as shall have
         been consented to by the Representatives.

                  (b) The Company will advise the Representatives promptly of
         any proposal to amend or supplement the initial or any additional
         registration statement as filed or the related prospectus or the
         Initial Registration Statement, the Additional Registration Statement
         (if any) or the Prospectus or the ADS Registration Statement and will
         not effect such amendment or supplementation without the
         Representatives' prior consent, which shall not be unreasonably
         withheld or delayed; and the Company will also advise the
         Representatives promptly of the effectiveness of each Registration
         Statement (if its Effective Time is subsequent to the execution and
         delivery of this Agreement) and the ADS Registration Statement (if its
         effectiveness is subsequent to the execution and delivery of this
         Agreement) and of any amendment or supplementation of a Registration
         Statement or the Prospectus or the ADS Registration Statement and of
         the institution by the Commission of any stop order proceedings in
         respect of a Registration Statement or the ADS Registration Statement
         and will use its best efforts to prevent the issuance of any such stop
         order and to obtain as soon as possible its lifting, if issued.

                  (c) If, at any time when a prospectus relating to the
         International Securities is required to be delivered under the Act in
         connection with sales by any International Underwriter or dealer, any
         event occurs as a result of which the Prospectus as then amended or
         supplemented would include an untrue statement of a material fact or
         omit to state any material fact necessary to make the statements
         therein, in the light of the circumstances under which they were made,
         not misleading, or if it is necessary at any time to amend the
         Prospectus to comply with the Act, the Company will promptly notify the
         Representatives of such event and will promptly prepare and file with
         the Commission, at its own expense, an amendment or supplement which
         will correct such statement or omission or an amendment which will
         effect such compliance. Neither the Representatives' consent to, nor
         the International Underwriters' delivery of, any such amendment or
         supplement shall constitute a waiver of any of the conditions set forth
         in Section 6.

                  (d) As soon as practicable, but not later than the
         Availability Date (as defined below), the Company will make generally
         available to its securityholders an earnings statement covering a
         period of at least 12 months beginning after the

         Effective Date of the Initial Registration Statement (or, if later, the
         Effective Date of the Additional Registration Statement) which will
         satisfy the provisions of Section 11(a) of the Act. For the purpose of
         the preceding sentence, "Availability Date" means the 45th day after
         the end of the fourth fiscal quarter following the fiscal quarter that
         includes such Effective Date, except that, if such fourth fiscal
         quarter is the last quarter of the Company's fiscal year, "Availability
         Date" means the 90th day after the end of such fourth fiscal quarter.

                  (e) The Company will furnish to the Representatives copies of
         the Registration Statement and the ADS Registration Statement (four (4)
         of each of which will be signed and will include all exhibits), each
         preliminary prospectus relating to the International Securities, and,
         so long as a prospectus relating to the International Securities is
         required to be delivered under the Act in connection with sales by any
         International Underwriter or dealer, the Prospectus and all amendments
         and supplements to such documents, in each case in such quantities as
         the Representatives reasonably request. The Prospectus shall be so
         furnished in New York City on or prior to 5:00 P.M., New York time, on
         the business day following the later of the execution and delivery of
         this Agreement or the Effective Time of the Initial Registration
         Statement. All other such documents shall be so furnished as soon as
         available. The Company will pay the expenses of printing and
         distributing to the International Underwriters all such documents.

                  (f) The Company will arrange for the qualification of the
         International Securities for sale under the laws of such jurisdictions
         in the United States as the Representatives designate and will continue
         such qualifications in effect so long as required for the distribution.

                  (g) During the period of two (2) years hereafter, the Company
         will furnish to the Representatives and, upon request, to each of the
         other International Underwriters, as soon as practicable after the end
         of each fiscal year, a copy of its annual report to stockholders for
         such year and any English language version or translation thereof ; and
         the Company will furnish to the Representatives (i) as soon as
         available, copies of the Portuguese language versions, and any English
         language versions or translations, of each report and any definitive
         proxy statement of the Company filed with the Commission under the
         Exchange Act or mailed to stockholders, all materials, notices and
         communications furnished by the Company to its stockholders, public
         reports and other reports and financials furnished by the Company to
         the Commission, the New York Stock Exchange, the CVM, the Sao Paulo
         Stock Exchange and the Depositary, and all quarterly and other reports,
         that are made generally available to holders of the shares of the
         capital stock of the Company, and (ii) from time to time, such other
         information concerning the Company as the Representatives may
         reasonably request.

                  (h) (i) Whether or not the transactions contemplated in this
         Agreement are consummated or this Agreement is terminated, the Company
         will pay or cause to be paid all costs and expenses incident to the
         performance of its obligations under this Agreement, the Brazilian
         Underwriting Agreement and the Deposit Agreement, including, without
         limiting the generality of the foregoing, all costs and expenses
         incident to or incurred in connection with: the preparation, issuance,
         execution and delivery of the Offered Securities; the preparation,
         printing and filing under the Act of the Registration Statement, the
         Additional Registration Statement (if any), the Prospectus and the ADS
         Registration Statement (including in each case all exhibits, amendments
         and supplements thereto); for any filing fees and other expenses
         (including fees and disbursements of counsel) in connection with
         qualification of the International Securities for sale under the laws
         of such jurisdictions in the United States as the Representatives
         designate and the printing of memoranda relating thereto; for the
         filing fee incidental to, and the reasonable fees and disbursements of
         counsel to the International Underwriters in connection with, the
         review by the National Association of Securities Dealers, Inc. ("NASD")
         of the International Securities; the registration of the Securities and
         the ADSs with the Commission and the CVM, the receipt of approvals and
         authorizations of the CVM, the Central Bank, the Commission and the
         NASD and the listing of the Securities and the ADSs on the Sao Paulo
         Stock Exchange and the New York Stock Exchange, as the case may be; the
         printing (including word processing and duplication costs) and
         distribution of the Securities, the ADRs, the Deposit Agreement, this
         Agreement, the Brazilian Underwriting Agreement and all other documents
         reasonably required in connection with the issuance, purchase and
         initial offering of the Securities and the ADSs; the printing and
         distribution of copies of the Registration Statement, the ADS
         Registration Statement, preliminary prospectuses and the Prospectus
         (including any amendments and supplements thereto) to the International
         Underwriters, including mailing and shipping; the preparation of ADR
         certificates evidencing the ADSs; the appointment of an authorized
         agent described in Section 15 hereof; as well as any travel expenses of
         the Company's officers and employees and any other expenses of the
         Company in connection with attending or hosting meetings with
         prospective purchasers of the Offered Securities, the costs, fees and
         expenses of any transfer agent or registrar, and the fees and expenses
         of Ernst & Young, the Company's independent accountants referred to in
         Section 6(a) hereof, and the Company's counsel. (ii) Whether or not the
         transactions contemplated in this Agreement are consummated or this
         Agreement is terminated, and subject to the provisions of Section 10
         hereof, the Company will pay to the Representatives on behalf of the
         International Underwriters and the Brazilian Underwriters on the First
         Closing Date the sum of up to U.S.$500,000 as the sole reimbursement of
         the Underwriters' costs and expenses arising out of or in connection
         with the execution, delivery and performance of this Agreement,
         including, without limitation, expenses related to the evaluation of
         the Company; travel expenses of the International Underwriters' and
         Brazilian Underwriters'

         officers and employees and any other expenses of the International
         Underwriters and Brazilian Underwriters in connection with attending or
         hosting drafting sessions, due diligence meetings, and meetings with
         prospective purchasers of the Offered Securities; and fees and
         disbursements of U.S. counsel for the International Underwriters and
         Brazilian counsel for the International and Brazilian Underwriters.
         Such amount, plus any amount described in clause (i) paid by the
         International Underwriters on behalf of the Company, may be deducted
         from the purchase price for the International Securities set forth in
         Section 3.

                  (i) The Company will indemnify and hold harmless the
         International Underwriters against any documentary, stamp or similar
         issuance tax, including any interest and penalties, on the creation,
         issuance and sale of the Offered Securities and on the execution and
         delivery of this Agreement, the Brazilian Underwriting Agreement and
         the Deposit Agreement. All payments to be made by the Company hereunder
         shall be made without withholding or deduction for or on account of any
         present or future taxes, duties or governmental charges whatsoever
         unless the Company is compelled by law to deduct or withhold such
         taxes, duties or charges. In that event, the Company shall pay such
         additional amounts as may be necessary in order that the net amounts
         received after such withholding or deduction shall equal the amounts
         that would have been received if no withholding or deduction had been
         made; provided, however, that any withholdings or deduction for or on
         account of present taxes, duties or governmental charges in force on
         the date hereof imposed by the Brazilian authorities in connection with
         the payment of the underwriting commission to the International
         Underwriters will be borne by the Company and each of the International
         Underwriters in proportion to its commitment to purchase the
         International Securities pursuant to this Agreement, in the proportion
         of two-thirds by the Company and one-third by such International
         Underwriter. If any such taxes, duties or charges are collected by
         deduction or withholding, the Company shall provide to the
         International Underwriters copies of documents evidencing the
         transmittal to the proper authorities of the amount of taxes, duties or
         charges deducted or withheld.

                  (j) For a period of 180 days after the date of the initial
         public offering of the Offered Securities, the Company will not offer,
         sell, contract to sell, pledge or otherwise dispose of, directly or
         indirectly, or file with the Commission a registration statement under
         the Act relating to, any additional shares of its capital stock or ADSs
         representing such shares or securities convertible into or exchangeable
         or exercisable for any shares of its capital stock or ADSs representing
         such shares, or publicly disclose the intention to make any such offer,
         sale, pledge, disposition or filing, without the prior written consent
         of the Representatives.

                  (k) The Company will comply with the terms of the Deposit
         Agreement so that the ADRs evidencing the ADSs will be executed by the
         Depositary and delivered to the International Underwriters, pursuant to
         this Agreement at the applicable Closing Date; it being understood that
         prior to any Closing Date, the Company will deposit or cause to be
         deposited Securities with the Depositary in accordance with the
         provisions of the Deposit Agreement so that the ADRs evidencing the
         ADSs to be delivered to the International Underwriters at such Closing
         Date are executed, countersigned and issued by the Depositary against
         receipt of such Securities and delivered to the International
         Underwriters at such Closing Date.

                  (l) The Company will apply the net proceeds from the sale of
         the Offered Securities being sold by the Company as set forth in the
         Prospectus.

                  (m) The Company will, on a timely basis, make all filings with
         and use its reasonable best efforts obtain all consents, approvals,
         authorizations or orders from, the Commission, the New York Stock
         Exchange, the CVM, the Central Bank, the Sao Paulo Stock Exchange and
         any other applicable securities commission that are necessary or
         advisable in respect of the International Offering and the Brazilian
         Offering; the Company will file promptly all reports and any definitive
         information statements required to be filed by the Company with the
         Commission pursuant to Section 13(a), 13(c), 14(d) or 15(d) of the
         Exchange Act for so long as the delivery of a prospectus is required in
         connection with the offering or sale of the ADSs and the Securities.

                  (n) The Company will use its reasonable best efforts to (i)
         obtain and maintain the listing of the Securities on the Sao Paulo
         Stock Exchange, (ii) prior to the Effective Date of the Initial
         Registration Statement, apply for listing of the ADSs on the New York
         Stock Exchange and use its best efforts to complete that listing,
         subject only to official notice of issuance and evidence of
         satisfactory distribution, prior to the First Closing Date, (iii) cause
         the ADSs to be eligible for settlement through the book-entry
         settlement facilities of The Depository Trust Company, and (iv) cause
         the ADSs to be eligible for settlement through facilities of
         Clearstream Banking, S.A. ("Clearstream Banking") and the Euroclear
         System ("Euroclear"); and if the Company is unable to maintain such
         listing for the Securities on the Sao Paulo Stock Exchange and New York
         Stock Exchange, the Company shall use all reasonable efforts to obtain
         and maintain one or more other listings of, or quotations for, the
         Securities and the ADSs, as the case may be, on such other stock
         exchange or exchanges or markets as the Company may determine in
         consultation with the Representatives.

                  (o) The Company will not, and will cause its affiliates not
         to, take, directly or indirectly, any action designed to or which
         constitutes or which might reasonably be expected to cause or result in
         stabilization or manipulation of the

         price of any security of the Company to facilitate the sale or resale
         of the ADSs or the Securities; and will not, and will cause any of its
         affiliated purchasers (as defined in Regulation M under the Exchange
         Act) not to, take any action prohibited by Regulation M.

                  (p) The Company will prepare, and will furnish to the
         Depositary or directly to the holders of ADRs, as soon as practicable
         after the end of each fiscal year, copies of an English language
         version or translation of its annual report for such year (to the
         extent prepared or required to be prepared), and also to prepare, and
         to furnish to the Depositary copies of an English language version or
         translation of its unaudited quarterly consolidated financial
         statements for the first three quarters of the fiscal year.

         6. Conditions of the Obligations of the Underwriters. The obligations
of the several International Underwriters to purchase and pay for the
International Firm Securities on the First Closing Date and the International
Optional Securities to be purchased on each Optional Closing Date will be
subject to the accuracy of the representations and warranties on the part of the
Company herein, to the accuracy of the statements of Company officers and the
Depositary made pursuant to the provisions hereof, to the performance by the
Company of its obligations hereunder and to the following additional conditions
precedent:

                  (a) The Representatives shall have received a letter, dated
         the date of delivery thereof (which, if the Effective Time of the
         Initial Registration Statement is prior to the execution and delivery
         of this Agreement, shall be on or prior to the date of this Agreement
         or, if the Effective Time of the Initial Registration Statement is
         subsequent to the execution and delivery of this Agreement, shall be
         prior to the filing of the amendment or post-effective amendment to the
         registration statement to be filed shortly prior to such Effective
         Time), of Ernst & Young Auditores Independentes confirming that they
         are independent public accountants within the meaning of the Act and
         the applicable published Rules and Regulations thereunder and stating
         that:

                           (i) in their opinion the financial statements
                  examined by them and included in the Registration Statements
                  comply as to form in all material respects with the applicable
                  accounting requirements of the Act and the related published
                  Rules and Regulations;

                           (ii) on the basis of a reading of the latest
                  available interim financial statements of the Company,
                  inquiries of officials of the Company who have responsibility
                  for financial and accounting matters and other specified
                  procedures, nothing came to their attention that caused them
                  to believe that:

                                    (A) at the date of the latest available
                           balance sheet read by such accountants, or at a
                           subsequent specified date not more than three
                           business days prior to the date of such letter, there
                           was any change in the capital stock or any increase
                           in short-term indebtedness or long-term debt of the
                           Company or, at the date of the latest available
                           balance sheet read by such accountants, there was any
                           increase in consolidated net current liabilities or
                           any decrease in consolidated net assets, as compared
                           with amounts shown on the latest balance sheet
                           included in the Prospectus; or

                                    (B) for the period from the closing date of
                           the latest income statement included in the
                           Prospectus to the closing date of the latest
                           available income statement read by such accountants
                           there were any decreases, as compared with the
                           corresponding period of the previous year and with
                           the period of corresponding length ended the date of
                           the latest income statement included in the
                           Prospectus, in consolidated net operating revenues or
                           operating income or in the total or per share amounts
                           of net income,

                  except in all cases set forth in clauses (A) and (B) above for
         changes, increases or decreases which the Prospectuses disclose have
         occurred or may occur or which are described in such letter; and

                           (iii) they have compared specified Brazilian reais
                  [and dollar] amounts (or percentages derived from such
                  Brazilian reais [and dollar] amounts) and other financial
                  information contained in the Registration Statements (in each
                  case to the extent that such Brazilian reais [and dollar]
                  amounts, percentages and other financial information are
                  derived from the general accounting records of the Company
                  subject to the internal controls of the Company's accounting
                  system or are derived directly from such records by analysis
                  or computation) with the results obtained from inquiries, a
                  reading of such general accounting records and other
                  procedures specified in such letter and have found such
                  Brazilian reais [and dollar] amounts, percentages and other
                  financial information to be in agreement with such results,
                  except as otherwise specified in such letter.

                  For purposes of this subsection, (i) if the Effective Time of
         the Initial Registration Statement is subsequent to the execution and
         delivery of this Agreement, "Registration Statements" shall mean the
         initial registration statement as proposed to be amended by the
         amendment or post-effective amendment to be filed shortly prior to its
         Effective Time, (ii) if the Effective Time of the Initial Registration
         Statement is prior to the execution and delivery of this Agreement but
         the Effective Time of the Additional Registration is subsequent to such

         execution and delivery, "Registration Statements" shall mean the
         Initial Registration Statement and the additional registration
         statement as proposed to be filed or as proposed to be amended by the
         post-effective amendment to be filed shortly prior to its Effective
         Time, and (iii) "Prospectus" shall mean the prospectus relating to the
         International Securities included in the Registration Statements.

                  (b) If the Effective Time of the Initial Registration
         Statement is not prior to the execution and delivery of this Agreement,
         such Effective Time shall have occurred not later than 10:00 P.M., New
         York time, on the date of this Agreement or such later date as shall
         have been consented to by the Representatives. If the Effective Time of
         the Additional Registration Statement (if any) is not prior to the
         execution and delivery of this Agreement, such Effective Time shall
         have occurred not later than 10:00 P.M., New York time, on the date of
         this Agreement or, if earlier, the time the Prospectus is printed and
         distributed to any International Underwriter, or shall have occurred at
         such later date as shall have been consented to by the Representatives.
         If the Effective Time of the Initial Registration Statement is prior to
         the execution and delivery of this Agreement, the Prospectus shall have
         been filed with the Commission in accordance with the Rules and
         Regulations and Section 5(a) of this Agreement. The ADS Registration
         Statement shall have been declared effective not later than 10:00 P.M.,
         New York time, on the date of this Agreement or such later date as
         shall have been consented to by the Representatives. Prior to such
         Closing Date, no stop order suspending the effectiveness of a
         Registration Statement or the ADS Registration Statement shall have
         been issued and no proceedings for that purpose shall have been
         instituted or, to the knowledge of the Company or the Representatives,
         shall be contemplated by the Commission.

                  (c) Subsequent to the execution and delivery of this
         Agreement, there shall not have occurred (i) any change, or any
         development or event involving a prospective change, in the condition
         (financial or other), business, properties or results of operations of
         the Company which, in the judgment of a majority in interest of the
         International Underwriters including the Representatives, is material
         and adverse and makes it impractical or inadvisable to proceed with
         completion of the public offering or the sale of and payment for the
         Offered Securities; (ii) any downgrading in the rating of any debt
         securities or preferred stock of the Company by any "nationally
         recognized statistical rating organization" (as defined for purposes of
         Rule 436(g) under the Act), or any public announcement that any such
         organization has under surveillance or review its rating of any debt
         securities or preferred stock of the Company (other than an
         announcement with positive implications of a possible upgrading, and no
         implication of a possible downgrading, of such rating) or any
         announcement that the Company has been placed on negative outlook;
         (iii) a change in U.S., Brazil or international financial, political or
         economic conditions or currency exchange

         rates or exchange controls as would, in the judgment of a majority in
         interest of the International Underwriters including the
         Representatives, be likely to prejudice materially the success of the
         proposed issue, sale or distribution of the Offered Securities, whether
         in the primary market or in respect of dealings in the secondary
         market; (iv) any material suspension or material limitation of trading
         in securities generally on the New York Stock Exchange, Sao Paulo Stock
         Exchange, or any setting of minimum prices for trading on such
         exchange, or any suspension of trading of any securities of the Company
         on any exchange or in the over-the-counter market; (v) any banking
         moratorium declared by U.S. Federal, New York or Brazilian authorities;
         (vi) any major disruption of settlements of securities or clearance
         services in the United States or Brazil or (vii) any attack on,
         outbreak or escalation of hostilities or act of terrorism involving the
         United States or Brazil or any declaration of war by the U.S. Congress,
         the Brazilian President or any other national or international
         calamity, emergency or crisis if, in the judgment of a majority in
         interest of the International Underwriters including the
         Representatives, the effect of any such attack, outbreak, escalation,
         act, declaration, calamity, emergency or crisis makes it impractical or
         inadvisable to proceed with completion of the public offering or the
         sale of and payment for the Offered Securities.

                  (d) The Representatives shall have received an opinion, dated
         such Closing Date, of Pinheiro Neto Advogados, Brazilian counsel for
         the Company, to the effect that (subject to customary assumptions and
         qualifications reasonably acceptable to the U.S. counsel for the
         International Underwriters):

                           (i) The Company has been duly incorporated and is an
                  existing mixed capital company (sociedade de economia mista)
                  in good standing under the laws of Brazil, with power and
                  authority (corporate and other) to own its properties and
                  conduct its business as described in the Prospectus;

                           (ii) The Company has an authorized and issued
                  capitalization as set forth in the Prospectus; the Offered
                  Securities delivered on such Closing Date, including those
                  represented by the ADSs, and all other outstanding shares of
                  the capital stock of the Company have been duly authorized and
                  validly issued, are fully paid and nonassessable and conform
                  to the description thereof contained in the Prospectuses; the
                  shareholders of the Company have no preemptive or similar
                  rights with respect to the Offered Securities, including those
                  represented by the ADSs, other than those rights that have
                  been validly waived or otherwise extinguished with respect to
                  the Offered Securities; except as set forth in the Prospectus,
                  there are no outstanding securities convertible into or
                  exchangeable for, or warrants, rights or options to purchase
                  from the Company, or obligations of the Company to issue, any
                  class of capital stock of the Company or any such convertible
                  or exchangeable securities or any such warrants, rights or

                  options; upon payment and delivery of the Offered Securities
                  being sold by the Company pursuant to this Agreement and the
                  Brazilian Underwriting Agreement, the International
                  Underwriters and the Brazilian Underwriters, respectively, or
                  other persons in whose names ADSs or Securities are registered
                  will acquire valid and marketable title to such ADSs or
                  Securities, in each case free and clear of all liens,
                  encumbrances, preemptive rights and other claims; after the
                  Securities to be deposited pursuant to the Deposit Agreement
                  have been so deposited and are represented by the ADSs, such
                  Securities will continue to be validly issued and outstanding,
                  fully paid and non-assessable; and there are no restrictions
                  on transfers of the shares of the Company's capital stock,
                  including, without limitation, the Offered Securities;

                           (iii) Upon the deposit of the Securities to be issued
                  by the Company with or for the account of the Depositary
                  pursuant to the Deposit Agreement against issuance of the ADRs
                  evidencing ADSs, all right, title and interest in such
                  Securities, subject to the terms of the Deposit Agreement,
                  will be transferred to the Depositary free and clear of all
                  liens, encumbrances, security interests or claims;

                           (iv) The Company has full power and authority to
                  enter into the Deposit Agreement; the Deposit Agreement has
                  been duly authorized, executed and delivered by the Company
                  and constitutes a valid and legally binding obligation of the
                  Company enforceable in accordance with its terms, subject to
                  bankruptcy, insolvency, fraudulent transfer, reorganization,
                  moratorium and similar laws of general applicability relating
                  to or affecting creditors' rights and to general equity
                  principles, and except that rights to indemnification may be
                  limited by public policy considerations;

                           (v) Except for the Registration Rights Agreement,
                  there are no contracts, agreements or understandings known to
                  such counsel between the Company and any person granting such
                  person the right to require the Company to file a registration
                  statement under the Act with respect to any securities of the
                  Company owned or to be owned by such person or to require the
                  Company to include such securities in the securities
                  registered pursuant to the Registration Statement or the ADS
                  Registration Statement or in any securities being registered
                  pursuant to any other registration statement filed by the
                  Company under the Act;

                           (vi) No consent, approval, authorization or order of,
                  or filing with, any Brazilian Federal, state or local
                  governmental agency or body or any court is required for the
                  consummation of the transactions contemplated by the Deposit
                  Agreement, this Agreement or the Brazilian Underwriting

                  Agreement in connection with the issuance or sale of the
                  Offered Securities by the Company, including the deposit of
                  any Securities represented by the ADSs with the Depositary and
                  the issuance of the ADRs evidencing the ADSs, except (i) as
                  may be required, and will have been obtained or made prior to
                  or at the First Closing Date, from the Central Bank and the
                  CVM relating to the Deposit Agreement, (ii) as may be
                  required, and will have been obtained or made prior to or at
                  the First Closing Date, from the CVM relating to the offering
                  of Securities as provided for in this Agreement and in the
                  Brazilian Underwriting Agreement, and (iii) as may be
                  required, and will have been obtained or made prior to or at
                  the First Closing Date, from the Central Bank relating to the
                  payment of the fees and commissions and the reimbursement of
                  expenses, in each case as contemplated in this Agreement and
                  in the Deposit Agreement;

                           (vii) The execution, delivery and performance of the
                  Deposit Agreement, this Agreement and the Brazilian
                  Underwriting Agreement, and the issuance and sale of the
                  Offered Securities, including the deposit of any Securities
                  represented by the ADSs with the Depositary and the issuance
                  of the ADRs evidencing the ADSs, will not (i) conflict with,
                  result in the creation or imposition of any lien, charge or
                  encumbrance upon any of the property or assets of the Company
                  pursuant to the terms of, result in a breach or violation of
                  any of the terms and provisions of, or constitute a default
                  under, any concession agreement, indenture, mortgage, deed of
                  trust, loan agreement or other agreement or instrument to
                  which the Company is a party or by which the Company is bound
                  or to which any of the properties of the Company is subject,
                  or (ii) result in a breach or violation of any of the terms
                  and provisions of, or constitute a default under, any law, any
                  statute, any rule, regulation, judgment, decree or order of
                  any Brazilian Federal or state governmental agency or body or
                  any court, domestic or foreign, having jurisdiction over the
                  Company or any of its properties or the rules and regulations
                  of the Sao Paulo Stock Exchange, or the charter or by-laws of
                  the Company, and the Company has full power and authority to
                  authorize, issue and sell the Offered Securities, including
                  the ADSs, as contemplated by the Deposit Agreement, this
                  Agreement and the Brazilian Underwriting Agreement,
                  respectively;

                           (viii) The Company has full power and authority to
                  enter into this Agreement and the Brazilian Underwriting
                  Agreement; each of this Agreement and the Brazilian
                  Underwriting Agreement has been duly authorized, executed and
                  delivered by the Company and constitutes a valid and legally
                  binding agreement of the Company enforceable in accordance
                  with its terms, subject to bankruptcy, insolvency, fraudulent
                  transfer,

                  reorganization, moratorium and similar laws of general
                  applicability relating to or affecting creditors' rights and
                  to general equity principles, and except that rights to
                  indemnification may be limited by public policy
                  considerations;

                           (ix) Except as set forth or contemplated in the
                  Prospectus, no stock exchange, stamp or other issuance or
                  transfer taxes or duties and no capital gains, income,
                  withholding or other taxes are payable by or on behalf of the
                  International Underwriters or the Brazilian Underwriters to
                  Brazil or to any political subdivision or taxing authority
                  thereof or therein in connection with (i) the entering into or
                  performing this Agreement and the Brazilian Underwriting
                  Agreement or receiving payments hereunder and thereunder, and
                  the issuance or sale of the ADSs and the Securities by the
                  Company in accordance with this Agreement and the Brazilian
                  Underwriting Agreement, (ii) the deposit with the Depositary
                  of the Securities against the issuance of ADRs evidencing the
                  ADSs, (iii) the delivery of the ADSs to or for the respective
                  accounts of the International Underwriters in the manner
                  contemplated herein, or (iv) the sale and delivery outside of
                  Brazil by the International Underwriters of the ADSs to the
                  purchasers thereof, other than Brazilian income tax regarding
                  the International Underwriters whose income is otherwise
                  subject to taxation in Brazil and Brazilian withholding tax at
                  a rate of 15% (or 25% if the beneficiary is domiciled in a
                  country that does not impose income tax or where such tax is
                  imposed at a maximum rate of 20%) on any payments made by the
                  Company to the International Underwriters in respect of (A)
                  the underwriting commission and (B) fees, costs and expenses
                  specified in Section 5(h) hereof, in each case as to which
                  withholding tax the Company shall pay additional amounts
                  pursuant to Section 5(i) hereof;

                           (x) Such counsel has no reason to believe that the
                  provisions of this Agreement, the Deposit Agreement and the
                  Brazilian Underwriting Agreement, including, without
                  limitation, the indemnification and contribution provisions of
                  this Agreement and the Deposit Agreement, contravene Brazilian
                  law or public policy;

                           (xi) All dividends and other distributions declared
                  and payable on the Offered Securities, including those
                  represented by the ADSs, may be paid by the Company to the
                  holder thereof in Brazilian reais that may be converted into
                  foreign currency and freely transferred out of Brazil and all
                  such payments made to holders thereof who are non-residents of
                  Brazil will not be subject to income, withholding or other
                  taxes under laws and regulations of Brazil or any political
                  subdivision or

                  taxing authority thereof or therein and will otherwise be free
                  and clear of any other tax, duty, withholding or deduction in
                  Brazil or any political subdivision or taxing authority
                  thereof or therein and without the necessity of obtaining any
                  governmental authorization in Brazil or any political
                  subdivision or taxing authority thereof or therein, except for
                  interest on share capital;

                           (xii) The Company's agreement to the choice of law
                  provisions set forth in Section 15 hereof and Section 7.6 of
                  the Deposit Agreement will be recognized and given effect to
                  by the courts of Brazil, assuming that, under New York law,
                  such agreement by the Company is legal, valid and binding;

                           (xiii) Any judgment obtained in a U.S. federal or
                  state court sitting in New York City arising out of or in
                  relation to the obligations of the Company under this
                  Agreement or the Deposit Agreement would be enforced against
                  the Company in the Brazilian courts, without reconsideration
                  of the merits or relitigation of the matters adjudicated upon
                  and without the payment of any stamp, registration or similar
                  tax or duty (except for certain authentication and translation
                  proceedings), upon confirmation of that judgment by the
                  Brazilian Federal Supreme Court; and such confirmation should
                  be provided if the foreign judgment (A) fulfills all
                  formalities required for its enforceability under the laws of
                  the State of New York and the United States, (B) is issued by
                  a competent court after proper service of process or
                  sufficient evidence of an absence of default judgment has been
                  given, as required under applicable law, (C) is not subject to
                  appeal, as duly certified by the foreign court, (D) is
                  authenticated by a Brazilian consular office in the United
                  States and is accompanied by a sworn translation into
                  Portuguese, by a publicly sworn translator in Brazil, (E) is
                  not contrary to Brazilian national sovereignty or public
                  policy and (F) is enforced in compliance with the applicable
                  procedure under the law of Brazil with respect to the
                  enforcement of foreign judgments;

                           (xiv) The submission by the Company to the
                  jurisdiction of the U.S. federal or state courts sitting in
                  New York City set forth in this Agreement and the Deposit
                  Agreement, the waiver by the Company of any immunity and any
                  objection to the laying of venue of a proceeding of a court
                  sitting in New York City, the appointment of the authorized
                  agent named in Section 15 of this Agreement and in Section 7.8
                  of the Deposit Agreement for the purposes described therein,
                  and the agreement of the Company that this Agreement and the
                  Deposit Agreement be governed by and construed in accordance
                  with the laws of the state of New York, are legal, valid and
                  binding under Brazilian laws; and service of process effected
                  in the manner set forth in this Agreement, assuming validity
                  under the laws of the State of New York, will be effective,
                  insofar as

                  Brazilian law is concerned, to confer valid personal
                  jurisdiction over the Company;

                           (xv) It is not necessary to ensure the legality,
                  validity, enforceability or admissibility in evidence of this
                  Agreement or the Deposit Agreement in Brazil or any political
                  subdivision thereof that any of them be filed or recorded or
                  enrolled with any court or authority in Brazil or any
                  political subdivision thereof or that any stamp, registration
                  or similar tax be paid in Brazil or any political subdivision
                  thereof, other than court costs, including filing fees and
                  deposits to guarantee judgment required by Brazilian law and
                  regulations, except that (A) the signature of the parties to
                  this Agreement and the Deposit Agreement and any other
                  document that may be deemed to be or become a party to any
                  such agreements shall have been notarized by a notary public
                  licensed as such under the law of the place of signing and the
                  signature of such notary public (to the extent not located in
                  Brazil) shall have been authenticated by the Brazilian
                  consular office and each of this Agreement and the Deposit
                  Agreement and any other document that may be deemed to be or
                  become a part to any such agreements shall have been
                  registered with the appropriate Registry of Deeds and
                  Documents in Brazil, (B) each of this Agreement and the
                  Deposit Agreement shall have been translated into Portuguese
                  by a sworn translator in Brazil and (C) this Agreement and the
                  Deposit Agreement, together with their respective sworn
                  translations into Portuguese, shall have been filed with the
                  CVM and the Deposit Agreement shall have been filed with the
                  Central Bank; and any International Underwriter in respect of
                  this Agreement, and the Depositary and any holder of ADSs in
                  respect of the Deposit Agreement, are entitled to sue as
                  plaintiff in the Brazilian courts for the enforcement of their
                  respective rights against the Company, and such access will
                  not be subject to any conditions which are not applicable to
                  Brazilian persons, except for the payment of certain expenses
                  and court fees, including the posting of a bond];

                           (xvi) To the best knowledge of such counsel after due
                  inquiry, there are no pending actions, suits or proceedings
                  against or affecting the Company or any of its properties
                  that, if determined adversely to the Company, would
                  individually or in the aggregate have a Material Adverse
                  Effect, or would materially and adversely affect the ability
                  of the Company to perform its obligations under the Deposit
                  Agreement, this Agreement or the Brazilian Underwriting
                  Agreement, or which are otherwise material in the context of
                  the sale of the Offered Securities; and no such actions, suits
                  or proceedings are threatened or, to such counsel's knowledge,
                  contemplated;

                           (xvii) To the best knowledge of such counsel after
                  due inquiry, the Company possesses adequate concessions,
                  licenses, franchises, certificates, authorities or permits or
                  other approvals or authorizations issued by appropriate
                  governmental agencies or bodies necessary to conduct the
                  business now operated by it or to own or lease its property or
                  assets, and such concessions, licenses, franchises,
                  certificates, authorities, permits and other approvals and
                  authorizations are in full force and effect, and has not
                  received any notice of proceedings relating to the revocation
                  or modification of any such concession, license, franchise,
                  certificate, authority or permit or other approval or
                  authorization that, if determined adversely to the Company,
                  would individually or in the aggregate have a Material Adverse
                  Effect;

                           (xviii) The Company (A) is not, and with the giving
                  of notice or lapse of time or both would not be, in violation
                  of or in default under its charter or by-laws, and (B) is not
                  in default, and no event has occurred which, with notice or
                  lapse of time or both, would constitute such a default, in the
                  due performance or observance of any term, covenant or
                  condition contained in any concession agreement, indenture,
                  mortgage or other agreement or instrument to which it is a
                  party or by which it is bound or to which any of its property
                  or assets is subject, except for, in the case of clause (B),
                  for such defaults which would not, individually or in the
                  aggregate, have a Material Adverse Effect;

                           (xix) The statements set forth in the Prospectus
                  under the caption "Taxation" to the extent that they
                  constitute summaries of matters of Brazilian tax law and
                  regulation or legal conclusions with respect thereto,
                  constitute a fair summary of the principal Brazilian income
                  tax consequences of an investment in the Offered Securities;

                           (xx) Except as set forth in the Prospectus, there are
                  no limitations under Brazilian law on the rights of holders of
                  Securities, ADSs or ADRs evidencing ADSs to hold or vote or
                  transfer their respective securities, and no approvals are
                  currently required in Brazil (including any foreign exchange
                  or foreign currency approvals) in order for the Company to pay
                  dividends declared by the Company to the holders of Offered
                  Securities, including the Depositary;

                           (xxi) It is not necessary under the laws of Brazil
                  for any International Underwriter or holder of ADSs, as a
                  result solely of its performance of its obligations hereunder,
                  under the Deposit Agreement or its holding of ADSs, or to
                  enforce its rights under this Agreement, the Deposit Agreement
                  or the ADSs, to be licensed, qualified or otherwise entitled
                  to carry on business in Brazil; and none of the holders of the

                  ADSs, or the International Underwriters will be deemed
                  resident, domiciled, carrying on business or subject to any
                  tax liability in Brazil solely by reason of the holding of the
                  ADSs, or the execution, delivery, performance or enforcement
                  of this Agreement, assuming that none of such persons is a
                  resident of Brazil or has a permanent establishment in Brazil;

                           (xxii) The performance by the International
                  Underwriters and the Brazilian Underwriters in Brazil of any
                  of their rights, duties, obligations and responsibilities
                  under this Agreement and the Brazilian Underwriting Agreement
                  will not violate any law applicable in Brazil;

                           (xxiii) The registration of the Securities underlying
                  the ADSs in the name of the Depositary does not violate any
                  law applicable in Brazil or the by-laws of the Company; and

                           (xxiv) Each of (i) the agreement dated as of January
                  29, 2002, between the state of Parana and the Company, in
                  connection with the return of funds relating to amounts
                  advanced to the Company for future capital increases
                  ("Contrato que entre si fazem o Estado do Parana e a Companhia
                  de Saneamento do Parana - Sanepar para devolucao em dinheiro
                  referente ao adiantamento para futuro aumento de capital"),
                  (ii) the Loan Agreement dated as of January 29, 2002, between
                  the state of Parana and the Company ("Contrato de
                  Sub-Emprestimo de Recursos do Acordo de Emprestimo no. BZ-P13
                  between JBIC and the state of Parana"), relating to the
                  on-lending by the state of Parana to the Company of funds
                  disbursed as of January 1, 2002 by The Overseas Economic
                  Corporation Fund - OECF in connection with the so-called
                  Paranasan project, and (iii) the agreement for the offsetting
                  of debts dated as of January 29, 2002, between the state of
                  Parana and the Company, in the amount of approximately R$39.9
                  million, has been duly authorized, executed and delivered by
                  the Company and the state of Parana, and constitutes a valid
                  and legally binding agreement of the Company and the state of
                  Parana, enforceable in accordance with its terms.

                           (xxv) The Registration Statement, the Prospectus,
                  each preliminary prospectus relating to the International
                  Securities and the preliminary and final prospectuses relating
                  to the Brazilian Offering have been duly authorized by the
                  Company;

                           (xxvi) The summary of the Company's by-laws and
                  Brazilian law set forth in the Prospectus with respect to the
                  Securities and the capital stock of the Company is accurate
                  and complete in all material respects;

                           (xxvii) (A) Such counsel has participated in
                  conferences with the Representatives, officers and other
                  representatives of the Company and representatives of the
                  independent certified accountants of the Company, at which
                  conferences the contents of the Prospectus and related matters
                  were discussed, and although such counsel has not verified and
                  does not pass upon or assume any responsibility for the
                  accuracy, completeness or fairness of the statements contained
                  in the Prospectus (except and only to the extent set forth in
                  subclauses (xix) and (xxvi) above), on the basis of the
                  foregoing (relying as to materiality to a large extent upon
                  representations and opinions of officers and other
                  representatives of the Company) it has no reason to believe
                  that the Prospectus at the date thereof or as of any Closing
                  Date (except for the financial statements and schedules and
                  other financial and statistical data included therein, as to
                  which such counsel need express no opinion), contained or
                  contains an untrue statement of a material fact or omitted or
                  omits to state a material fact necessary to make the
                  statements therein, in the light of the circumstances under
                  which they were made, not misleading; and (B) the descriptions
                  in the Prospectus of Brazilian statutes, regulations, legal
                  and governmental proceedings, and contracts and other
                  documents, insofar as such descriptions constitute summaries
                  of such statutes, regulations and legal and governmental
                  proceedings, and contracts and other documents, are accurate
                  and fairly present the information required to be shown; and
                  to the best of such counsel's knowledge, there are no
                  Brazilian statutes, regulations or legal or governmental
                  proceedings required to be described in a Registration
                  Statement or the Prospectus which are not described as
                  required, and there are no franchises, contracts, indentures,
                  mortgages, loan agreements, notes, leases or other instruments
                  that are required to be described or referred to in a
                  Registration Statement or the Prospectus or to be filed as
                  exhibits to a Registration Statement other than those
                  described or referred to therein or filed as exhibits thereto;

                           (xxviii) The holders of outstanding shares of capital
                  stock of the Company are not entitled to preemptive rights or
                  other similar rights in connection with the offerings
                  contemplated by this Agreement or the Brazilian Underwriting
                  Agreement; and

                           (xxix) Neither the Company nor any of its assets is
                  entitled to immunity from suit, execution, attachment or other
                  legal process in Brazil, other than the assets which are
                  required to render the services provided by the Company, which
                  are not subject to attachment.

                  (e) The Representatives shall have received an opinion, dated
         such Closing Date, of          , general counsel for the Company, to
         the effect

         that (subject to customary assumptions and qualifications reasonably
         acceptable to the U.S. counsel for the International Underwriters):

                           (i) Except as disclosed in the Prospectus, the
                  Company has good and marketable title to all real properties
                  and interests in real property (including, without limitation,
                  easements for installing, operation and maintenance of pipes,
                  pumps and accessory equipment) and all other properties and
                  assets owned by it, in each case free from Liens that would
                  materially affect the value thereof or materially interfere
                  with the use made or to be made thereof by it; and the Company
                  holds all leased real or personal properties under valid and
                  enforceable leases free of any Liens that would materially
                  interfere with the use made or to be made thereof by it; and
                  the Company has not received any notice of any material claim
                  of any sort that has been asserted by anyone adverse to the
                  rights of the Company in or to any owned property or interests
                  therein or under any of the leases described above, or
                  affecting or questioning the rights thereof to the continued
                  possession of the owned property or interests therein or the
                  leased premises under any such lease except as would not
                  individually or in the aggregate have a Material Adverse
                  Effect;

                           (ii) The Company holds 342 concessions in the state
                  of Parana for the provision of water and wastewater services,
                  and all such concessions and the related concession agreements
                  are valid and binding upon the Company and the relevant
                  granting authorities thereof, enforceable in accordance with
                  their respective terms, and are in full force and effect, and
                  the Company has not received any notice of and it is not aware
                  of proceedings relating to the revocation or modification of
                  any such concession or the related concession agreement; and

                           (iii) The Company (A) is in compliance with any and
                  all applicable environmental laws of Brazil, (B) has received
                  all permits, licenses or other approvals required under
                  applicable environmental laws of Brazil to conduct its
                  businesses and (C) is in compliance with all terms and
                  conditions of any such permit, license or approval, except
                  where such noncompliance with environmental laws of Brazil,
                  failure to receive required permits, licenses or other
                  approvals or failure to comply with the terms and conditions
                  of such permits, licenses or approvals, would not, singly or
                  in the aggregate, have a Material Adverse Effect; and the
                  Company has not received notice of any actual or potential
                  liability for the investigation or remediation of any disposal
                  or release of hazardous or toxic substances or wastes,
                  pollutants or contaminants that, if determined adversely to
                  the Company, would individually or in the aggregate have a
                  Material Adverse Effect.

                  (f) The Representatives shall have received an opinion, dated
         such Closing Date, of Milbank, Tweed, Hadley & McCloy LLP, U.S. counsel
         for the Company, to the effect that (subject to customary assumptions
         and qualifications reasonably acceptable to the U.S. counsel for the
         International Underwriters):

                           (i) Assuming that this Agreement has been duly
                  authorized, executed and delivered by the Company under the
                  laws of Brazil, this Agreement has been duly executed and
                  delivered by the Company (to the extent execution and delivery
                  are governed by the laws of the State of New York);

                           (ii) Assuming that the Deposit Agreement has been
                  duly authorized, executed and delivered by the Company under
                  the laws of Brazil, the Deposit Agreement has been duly
                  executed and delivered by the Company (to the extent execution
                  and delivery are governed by the laws of the State of New
                  York) and, assuming due authorization, execution and delivery
                  of the Deposit Agreement by the Depositary, the Deposit
                  Agreement will constitute the legal, valid and binding
                  obligation of the Company, enforceable against the Company in
                  accordance with its terms, except as may be limited by
                  bankruptcy, insolvency, reorganization, moratorium, fraudulent
                  conveyance or transfer or other similar laws relating to or
                  affecting the rights of creditors generally (and to the
                  possible judicial application of foreign laws or governmental
                  action affecting the rights of creditors generally), and
                  except as the enforceability of the Deposit Agreement is
                  subject to the application of general principles of equity
                  (regardless of whether considered in a proceeding in equity or
                  at law), including, without limitation, (a) the possible
                  unavailability of specific performance, injunctive relief or
                  any other equitable remedy and (b) concepts of materiality,
                  reasonableness, good faith and fair dealing;

                           (iii) Assuming the consummation of the sale of the
                  ADSs as contemplated by the terms of this Agreement, upon
                  issuance by the Depositary of ADRs evidencing ADSs against the
                  deposit of Securities in respect thereof in accordance with
                  the Deposit Agreement, such ADRs will be duly and validly
                  issued and will entitle the persons in whose names such ADRs
                  are registered to the rights specified therein and in the
                  Deposit Agreement; the ADSs representing the Securities will
                  be freely transferable; and the Deposit Agreement and the ADSs
                  conform to the descriptions thereof contained in the
                  Prospectus;

                           (iv) Other than the effectiveness of the registration
                  statement on Form F-1 and the registration statement on Form
                  F-6 relating to the ADSs under the Act, the deposit of the
                  Securities with the Depositary against the issuance of ADRs in
                  accordance with the Deposit Agreement and the

                  performance by the Company of its obligations under this
                  Agreement and the Deposit Agreement (including the issuance
                  and delivery of the International Securities and the issuance,
                  delivery and sale of the ADSs in the manner contemplated in
                  this Agreement, the Registration Statement and the
                  Prospectus), (a) do not require the consent, approval,
                  authorization, registration or qualification of or with any
                  governmental agency of the United States or the state of New
                  York, except such as have been obtained or effected under the
                  Act or in connection with any listing of the ADSs on the New
                  York Stock Exchange (but such counsel needs to express no
                  opinion as to any consent, approval, authorization,
                  registration or qualification that may be required under state
                  securities laws), and (b) do not result in any violation of
                  any U.S. Federal or New York state statute, rule or
                  regulation, or, to the knowledge of such counsel, any order of
                  any U.S. Federal or New York state court or governmental
                  agency or body having jurisdiction over the Company (except as
                  to U.S. Federal securities laws and state securities laws, as
                  to which such counsel needs to express no opinion);

                           (v) The Company is not and, after giving effect to
                  the offering and sale of the Offered Securities and the
                  application of the proceeds thereof as described in the
                  Prospectus, will not be an "investment company" as defined in
                  the Investment Company Act of 1940;

                           (vi) The Initial Registration Statement was declared
                  effective under the Act as of the date and time specified in
                  such opinion, the Additional Registration Statement (if any)
                  was filed and became effective under the Act as of the date
                  and time (if determinable) specified in such opinion, the
                  Prospectus either was filed with the Commission pursuant to
                  the subparagraph of Rule 424(b) specified in such opinion on
                  the date specified therein or was included in the Initial
                  Registration Statement or the Additional Registration
                  Statement (as the case may be), and, to the best of the
                  knowledge of such counsel, no stop order suspending the
                  effectiveness of a Registration Statement, the ADS
                  Registration Statement or any part thereof has been issued and
                  no proceedings for that purpose have been instituted or are
                  pending or contemplated under the Act, and each Registration
                  Statement and the Prospectus and the ADS Registration
                  Statement, and each amendment or supplement thereto, as of
                  their respective effective or issue dates, complied as to form
                  in all material respects with the requirements of the Act and
                  the Rules and Regulations; the descriptions in the
                  Registration Statements and the Prospectus of statutes, legal
                  and governmental proceedings and contracts and other documents
                  are accurate and fairly present the information required to be
                  shown; and such counsel do not know of any U.S. statutes,
                  regulations or legal or governmental proceedings required to
                  be described in a Registration Statement or the Prospectus
                  which are not described as required or of any contracts or
                  documents of a character required to be described in a

                  Registration Statement or the Prospectus or to be filed as
                  exhibits to a Registration Statement which are not described
                  and filed as required; it being understood that such counsel
                  need express no opinion as to the financial statements or
                  other financial data contained in the Registration Statement
                  or the Prospectus;

                           (vii) The statements made in the Prospectus under the
                  caption "Description of American Depositary Shares," insofar
                  as such statements purport to summarize certain provisions of
                  the Deposit Agreement, provide a fair summary of such
                  provisions;

                           (viii) The statements made in the Prospectus under
                  the caption "Taxation--United States Tax Consequences" fairly
                  and accurately summarize in all material respects the matters
                  therein described; and

                           (ix) Under the laws of the state of New York relating
                  to the submission to personal jurisdiction, the Company has,
                  pursuant to Section 15 of this Agreement and pursuant to
                  Section 7.8 of the Deposit Agreement (subject to customary
                  qualifications reasonably acceptable to the U.S. counsel for
                  the International Underwriters), validly submitted to the
                  personal jurisdiction of any New York state court or U.S.
                  Federal court sitting in the Borough of Manhattan, New York
                  City, and any appellate court thereof in any suit, action or
                  proceeding arising out of or relating to this Agreement or the
                  Deposit Agreement, has validly waived any objection to the
                  venue of a proceeding in any such court and any immunity to
                  jurisdiction in such court, and has validly appointed the
                  authorized agent named in Section 15 of this Agreement and in
                  Section 7.8 of the Deposit Agreement for the purposes
                  described therein; and service of process effected on such
                  agent in the manner set forth in Section 15 of this Agreement
                  and Section 7.8 of the Deposit Agreement, will be effective to
                  confer valid personal jurisdiction over the Company in any
                  suit, action or proceeding arising out of or relating to this
                  Agreement or the Deposit Agreement.

                  In addition, said opinion shall state that, subject to
                  customary qualifications reasonably acceptable to the U.S.
                  counsel for the International Underwriters, such counsel have
                  no reason to believe that any part of a Registration Statement
                  or the ADS Registration Statement or any amendment thereto, as
                  of its effective date or as of such Closing Date, contained
                  any untrue statement of a material fact or omitted to state
                  any material fact required to be stated therein or necessary
                  to make the statements therein not misleading or that the
                  Prospectus or any amendment

                  or supplement thereto, as of its issue date or as of such
                  Closing Date, contained any untrue statement of a material
                  fact or omitted to state any material fact necessary in order
                  to make the statements therein, in the light of the
                  circumstances under which they were made, not misleading
                  (except that such counsel need express no views as to
                  statistical, financial or accounting information contained in
                  or omitted from said Registration Statements or Prospectus, or
                  any amendment or supplement thereto).

                  (g) The Representatives shall have received from Machado,
         Meyer, Sendacz e Opice Advogados, Brazilian counsel for the
         International Underwriters, such opinion or opinions, dated such
         Closing Date, with respect to the incorporation of the Company, the
         validity of the Offered Securities delivered on such Closing Date, the
         Registration Statements, the ADS Registration Statement, the Prospectus
         and other related matters as the Representatives may reasonably
         require, and the Company shall have furnished to such counsel such
         documents as they request for the purpose of enabling them to pass upon
         such matters. In rendering such opinion, Machado, Meyer, Sendacz e
         Opice Advogados may rely as to matters governed by New York law upon
         the opinion of Cravath, Swaine & Moore referred to below.

                  (h) The Representatives shall have received from Cravath,
         Swaine & Moore, U.S. counsel for the International Underwriters, such
         opinion or opinions, dated such Closing Date, with respect to the
         validity of the International Securities delivered on such Closing
         Date, the Registration Statements, the ADS Registration Statement, the
         Prospectus and other related matters as the Representatives may
         reasonably require, and the Company shall have furnished to such
         counsel such documents as they request for the purpose of enabling them
         to pass upon such matters. In rendering such opinion, Cravath, Swaine &
         Moore may rely as to the incorporation of the Company and all other
         matters governed by Brazilian law upon the opinion of Machado, Meyer,
         Sendacz e Opice Advogados referred to above.

                  (i) The Underwriters shall have received an opinion, dated
         such Closing Date, from Emmet, Marvin & Martin, LLP, counsel for the
         Depositary, to the effect that:

                           (i) The Deposit Agreement has been duly authorized,
                  executed and delivered by the Depositary and constitutes a
                  valid and legally binding obligation of the Depositary
                  enforceable in accordance with its terms, subject to
                  bankruptcy, insolvency, reorganization, moratorium and similar
                  laws of general applicability relating to or affecting
                  creditors' rights and to general equity principles;

                           (ii) Upon issuance by the Depositary of the ADRs
                  evidencing the ADSs in accordance with the Deposit Agreement,
                  such ADRs will be duly and validly issued and will entitle the
                  holders thereof to the rights specified therein and in the
                  Deposit Agreement; and the Deposit Agreement and ADRs conform
                  to the descriptions thereof in the Prospectus; and

                           (iii) The ADS Registration Statement was declared
                  effective under the Act as of the date and time specified in
                  such opinion, and, to the best of the knowledge of such
                  counsel, no stop order suspending the effectiveness of the ADS
                  Registration Statement or any part thereof has been instituted
                  or is pending or contemplated under the Act, and the ADS
                  Registration Statement, and each amendment or supplement
                  thereto, as of their respective effective or issue dates,
                  complied as to form in all material respects with the
                  requirements of the Act and the Rules and Regulations.

                  (j) The Depositary shall have furnished or caused to be
         furnished to the Underwriters a certificate satisfactory to the
         Representatives of one of its authorized officers with respect to the
         deposit with it of the Securities represented by the ADSs against
         issuance of the ADRs evidencing the ADSs, the execution, issuance,
         countersignature and delivery of the ADRs evidencing the ADSs pursuant
         to the Deposit Agreement and such other matters related thereto as the
         Representatives reasonably request.

                  (k) The Representatives shall have received a certificate,
         dated such Closing Date, of the President or any Vice President and a
         principal financial or accounting officer of the Company in which such
         officers, to the best of their knowledge after reasonable
         investigation, shall state that: the representations and warranties of
         the Company in this Agreement are true and correct; the Company has
         complied with all agreements and satisfied all conditions on its part
         to be performed or satisfied hereunder at or prior to such Closing
         Date; the Additional Registration Statement (if any) satisfying the
         requirements of subparagraphs (1) and (3) of Rule 462(b) was filed
         pursuant to Rule 462(b), including payment of the applicable filing fee
         in accordance with Rule 111(a) or (b) under the Act, prior to the time
         either Prospectus was printed and distributed to any International
         Underwriter; and subsequent to the date of the most recent financial
         statements in the Prospectus, there has been no material adverse
         change, nor any development or event involving a prospective material
         adverse change, in the condition (financial or other), business,
         properties or results of operations of the Company except as set forth
         in or contemplated by the Prospectus or as described in such
         certificate; they have examined the Registration Statements and the
         Prospectus and, in their opinion, the Registration Statements and the
         Prospectus, as of their respective Effective Dates, did not include any
         untrue statements of a material fact and did not omit to state a
         material

         fact required to be stated therein or necessary to make the statements
         therein not misleading.

                  (l) The Representatives shall have received a letter, dated
         such Closing Date, of Ernst & Young Auditores Independentes which meets
         the requirements of subsection (a) of this Section, except that the
         specified date referred to in such subsection will be a date not more
         than three business days prior to such Closing Date for the purposes of
         this subsection.

                  (m) On such Closing Date, the Brazilian Underwriters shall
         have purchased the Brazilian Securities pursuant to the Brazilian
         Underwriting Agreement.

                  (n) The Representatives shall have received the Lock-up
         Agreements duly executed by each of the executive officers, directors
         and holders of more than 5% of the shares of the capital stock of the
         Company, and such Lock-up Agreements shall be in full force and effect.

                  (o) The Company and the Depositary shall have executed and
         delivered the Deposit Agreement, and such Deposit Agreement shall be in
         full force and effect.

                  (p) The approvals by (i) the Central Bank and the CVM of the
         Deposit Agreement, (ii) the CVM of the offering of the Securities as
         contemplated by this Agreement and the Brazilian Underwriting
         Agreement, and (iii) the Central Bank of the payment of fees and
         commissions and the reimbursement of expenses set forth in this
         Agreement and the Brazilian Underwriting Agreement, shall have been
         obtained and shall be in full force and effect.

                  (q) The NASD shall not have raised any objection with respect
         to the fairness and reasonableness of the underwriting terms and
         agreements.

                  (r) (i) The listing of the Securities on the Sao Paulo Stock
         Exchange shall be in full force and effect; (ii) the New York Stock
         Exchange shall have approved the ADSs for listing, subject only to
         official notice of issuance and evidence of satisfactory distribution;
         (iii) the ADSs shall have been accepted for settlement through the
         facilities of The Depository Trust Company; and (iv) the ADSs shall
         have been accepted for settlement through the facilities of Cedel and
         Euroclear.

                  (s) Except as set forth in or contemplated by the Prospectus,
         since the date of the latest audited financial statements included in
         the Prospectus, there has not been (i) any change in the capital stock
         of the Company or increase in the long-term debt (including the current
         portion thereof) of the Company, (ii) any material loss or interference
         with its business from fire, explosion, flood or other calamity,

         whether or not covered by insurance, or from any labor dispute or court
         or government action, order or decree or (iii) any material adverse
         change, or any development involving a prospective material adverse
         change, in or affecting the business, properties, financial condition,
         stockholders' equity or results of operations of the Company taken as a
         whole, the effect of which, in any such case described in clause (i) or
         (ii), is, in the reasonable judgment of the Representatives, so
         material and adverse as to have, or will have, a Material Adverse
         Effect on the offering of, or market for, the ADSs.

                  (t) [CT Corporation System] shall have furnished to the
         Representatives a letter confirming its acceptance of appointment as
         the authorized agent for the Company in accordance with Section 15
         hereof.

The Company will furnish the Representatives with such conformed copies of such
opinions, certificates, letters and documents as the Representatives reasonably
request. the Representatives may in their sole discretion waive on behalf of the
International Underwriters compliance with any conditions to the obligations of
the International Underwriters hereunder, whether in respect of an Optional
Closing Date or otherwise.

         7. Indemnification and Contribution. (a) The Company will indemnify and
hold harmless each International Underwriter, its partners, directors and
officers and each person, if any, who controls such International Underwriter
within the meaning of Section 15 of the Act, against any losses, claims, damages
or liabilities, joint or several, to which such International Underwriter,
partners, directors, officers or controlling persons may become subject, under
the Act or otherwise, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon any untrue statement
or alleged untrue statement of any material fact contained in any Registration
Statement, the ADS Registration Statement, the Prospectus, or any amendment or
supplement thereto, or any related preliminary prospectus, or arise out of or
are based upon the omission or alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, and will reimburse each International Underwriter, partners,
directors, officers or controlling persons for any legal or other expenses
reasonably incurred by such International Underwriter, partners, directors,
officers or controlling persons in connection with investigating or defending
any such loss, claim, damage, liability or action as such expenses are incurred;
provided, however, that the Company will not be liable in any such case to the
extent that any such loss, claim, damage or liability arises out of or is based
upon an untrue statement or alleged untrue statement in or omission or alleged
omission from any of such documents in reliance upon and in conformity with
written information furnished to the Company by any International Underwriter
through the Representatives specifically for use therein, it being understood
and agreed that the only information furnished by any International Underwriter
consists of the information described as such in subsection (b) below; provided
further, however, that with respect to any untrue statement or omission of a
material fact made in any preliminary prospectus,

the indemnity agreement contained in this Section 7(a) shall not inure to the
benefit of the International Underwriter from whom the person asserting any such
loss, claim, damage or liability purchased the securities concerned, to the
extent that any such loss, claim, damage or liability of the International
Underwriter occurs under the circumstance where it shall have been determined by
a court of competent jurisdiction by final and nonappealable judgment that (w)
the Company had previously furnished copies of the Prospectus to the
Representatives, (x) delivery of the Prospectus was required by the Act to be
made to such person, (y) the untrue statement or omission of a material fact
contained in the preliminary prospectus was corrected in the Prospectus and (z)
there was not sent or given to such person, at or prior to the written
confirmation of the sale of such securities to such person, a copy of the
Prospectus.

         (b) Each International Underwriter will severally and not jointly
indemnify and hold harmless the Company, its directors and officers and each
person, if any, who controls the Company within the meaning of Section 15 of the
Act, against any losses, claims, damages or liabilities to which the Company or
any such directors, officers or controlling persons may become subject, under
the Act or otherwise, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon any untrue statement
or alleged untrue statement of any material fact contained in any Registration
Statement, the ADS Registration Statement, the Prospectus, or any amendment or
supplement thereto, or any related preliminary prospectus, or arise out of or
are based upon the omission or the alleged omission to state therein a material
fact required to be stated therein or necessary to make the statements therein
not misleading, in each case to the extent, but only to the extent, that such
untrue statement or alleged untrue statement or omission or alleged omission was
made in reliance upon and in conformity with written information furnished to
the Company by such International Underwriter through the Representatives
specifically for use therein, and will reimburse any legal or other expenses
reasonably incurred by the Company or any such directors, officers or
controlling persons in connection with investigating or defending any such loss,
claim, damage, liability or action as such expenses are incurred, it being
understood and agreed that the only such information furnished by any
International Underwriter consists of (i) the following information in the
Prospectus furnished on behalf of each Underwriter: the names of the
International Underwriters[; any stabilization legend;] the information
regarding the agreement among the underwriters appearing in the fourth (4th)
paragraph under the caption "Underwriting"; the concession and reallowance
figures appearing in the fifth (5th) paragraph under the caption "Underwriting";
the information regarding confirmation of sales appearing in the seventh (7th)
paragraph under the caption "Underwriting"; the information appearing in the
eighth (8th) paragraph under the caption "Underwriting" to the extent relating
to compliance with the rules of the National Association of Securities Dealers,
Inc. (the "NASD"); the seventeenth (17th) and eighteenth (18th) paragraphs under
the caption "Underwriting" (relating to short-sales, syndicate covering
transactions and stabilization transactions, penalty bids, market-making and
similar matters) and the penultimate paragraph under the caption "Underwriting"
(relating to the provision of electronic prospectuses by the International
Underwriters) and (ii) the following information in the Prospectus furnished

on behalf of ABN AMRO Rothschild LLC: "Affiliates of one of the members of ABN
AMRO Rothschild LLC own R$10 million of commercial paper of our company and
manage an investment fund which owns R$15 million of commercial paper of our
company."

         (c) Promptly after receipt by an indemnified party under this Section
or Section 9 of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under subsection (a) or (b) above or Section 9, notify the indemnifying party of
the commencement thereof; but the omission so to notify the indemnifying party
will not relieve it from any liability which it may have to any indemnified
party otherwise than under subsection (a) or (b) above or Section 9. In case any
such action is brought against any indemnified party and it notifies the
indemnifying party of the commencement thereof, the indemnifying party will be
entitled to participate therein and, to the extent that it may wish, jointly
with any other indemnifying party similarly notified, to assume the defense
thereof, with counsel satisfactory to such indemnified party (who shall not,
except with the consent of the indemnified party, be counsel to the indemnifying
party), and after notice from the indemnifying party to such indemnified party
of its election so to assume the defense thereof, the indemnifying party will
not be liable to such indemnified party under this Section or Section 9, as the
case may be, for any legal or other expenses subsequently incurred by such
indemnified party in connection with the defense thereof other than reasonable
costs of investigation. No indemnifying party shall, without the prior written
consent of the indemnified party, effect any settlement of any pending or
threatened action in respect of which any indemnified party is or could have
been a party and indemnity could have been sought hereunder by such indemnified
party unless such settlement (i) includes an unconditional release of such
indemnified party from all liability on any claims that are the subject matter
of such action and (ii) does not include a statement as to, or an admission of,
fault, culpability or a failure to act by or on behalf of an indemnified party.

         (d) If the indemnification provided for in this Section is unavailable
or insufficient to hold harmless an indemnified party under subsection (a) or
(b) above, then each indemnifying party shall contribute to the amount paid or
payable by such indemnified party as a result of the losses, claims, damages or
liabilities referred to in subsection (a) or (b) above (i) in such proportion as
is appropriate to reflect the relative benefits received by the Company on the
one hand and the International Underwriters on the other from the offering of
the International Securities or (ii) if the allocation provided by clause (i)
above is not permitted by applicable law, in such proportion as is appropriate
to reflect not only the relative benefits referred to in clause (i) above but
also the relative fault of the Company on the one hand and the International
Underwriters on the other in connection with the statements or omissions which
resulted in such losses, claims, damages or liabilities as well as any other
relevant equitable considerations. The relative benefits received by the Company
on the one hand and the International Underwriters on the other shall be deemed
to be in the same proportion as the total net

proceeds from the offering of the International Securities (before deducting
expenses) received by the Company bear to the total underwriting discounts and
commissions received by the International Underwriters. The relative fault shall
be determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or the omission or alleged omission to state
a material fact relates to information supplied by the Company or the
International Underwriters and the parties' relative intent, knowledge, access
to information and opportunity to correct or prevent such untrue statement or
omission. The amount paid by an indemnified party as a result of the losses,
claims, damages or liabilities referred to in the first sentence of this
subsection (d) shall be deemed to include any legal or other expenses reasonably
incurred by such indemnified party in connection with investigating or defending
any action or claim which is the subject of this subsection (d). Notwithstanding
the provisions of this subsection (d), no International Underwriter shall be
required to contribute any amount in excess of the amount by which the total
price at which the International Securities underwritten by it and distributed
to the public were offered to the public exceeds the amount of any damages which
such International Underwriter has otherwise been required to pay by reason of
such untrue or alleged untrue statement or omission or alleged omission. No
person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation. The International Underwriters'
obligations in this subsection (d) to contribute are several in proportion to
their respective underwriting obligations and not joint.

         (e) The obligations of the Company under this Section and Section 9
shall be in addition to any liability which the Company may otherwise have and
shall extend, upon the same terms and conditions, to each partner, director and
officer of any International Underwriter and each person, if any, who controls
any International Underwriter or the QIU (as hereinafter defined) within the
meaning of the Act; and the obligations of the International Underwriters under
this Section shall be in addition to any liability which the respective
International Underwriters may otherwise have and shall extend, upon the same
terms and conditions, to each director of the Company, to each officer of the
Company who has signed a Registration Statement and to each person, if any, who
controls the Company within the meaning of the Act.

         8. Default of Underwriters. If any International Underwriter or
International Underwriters default in their obligations to purchase
International Securities hereunder on either the First or any Optional Closing
Date and the aggregate number of ADSs constituting the International Securities
that such defaulting International Underwriter or International Underwriters
agreed but failed to purchase does not exceed 10% of the total number of ADSs
constituting the International Securities that the International Underwriters
are obligated to purchase on such Closing Date, the Representatives may make
arrangements satisfactory to the Company for the purchase of such International
Securities by other persons, including any of the International Underwriters,
but if no such arrangements are made by such Closing Date the non-defaulting
International

Underwriters shall be obligated severally, in proportion to their respective
commitments hereunder, to purchase the International Securities that such
defaulting International Underwriters agreed but failed to purchase on such
Closing Date. If any International Underwriter or International Underwriters so
default and the aggregate number of ADSs constituting the International
Securities with respect to which such default or defaults occur exceeds 10% of
the total number of ADSs constituting the International Securities that the
International Underwriters are obligated to purchase on such Closing Date and
arrangements satisfactory to the Representatives and the Company for the
purchase of such International Securities by other persons are not made within
36 hours after such default, this Agreement will terminate without liability on
the part of any non-defaulting International Underwriter or the Company, except
as provided in Section 10 (provided that if such default occurs with respect to
International Optional Securities after the First Closing Date, this Agreement
will not terminate as to the International Firm Securities or any International
Optional Securities purchased prior to such termination). For purposes of this
Section, International Securities in ADS form in lieu of which the International
Underwriters purchase International Securities in the form of preferred shares
shall be treated as International Securities purchased by the International
Underwriters. As used in this Agreement, the term "International Underwriter"
includes any person substituted for an International Underwriter under this
Section. Nothing herein will relieve a defaulting International Underwriter from
liability for its default.

         9. Qualified Independent Underwriter. The Company hereby confirms that
at its request ABN AMRO Rothschild LLC has without compensation acted as
"qualified independent underwriter" (in such capacity, the "QIU") within the
meaning of Rule 2720 of the Conduct Rules of the National Association of
Securities Dealers, Inc. in connection with the offering of the International
Securities. The Company will indemnify and hold harmless the QIU under the same
terms and conditions set forth in Section 7 hereof, including the contribution
provisions set forth in Section 7, against any losses, claims, damages or
liabilities, joint or several, to which the QIU may become subject, under the
Act or otherwise, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon the QIU's acting (or
alleged failing to act) as such "qualified independent underwriter" and will
reimburse the QIU for any legal or other expenses reasonably incurred by the QIU
in connection with investigating or defending any such loss, claim, damage,
liability or action as such expenses are incurred. The indemnification set forth
in this Section 9 shall be in addition to the indemnification provided for in
Section 7 above.

         10. Survival of Certain Representations and Obligations. The respective
indemnities, agreements, representations, warranties and other statements of the
Company or its officers and of the several International Underwriters set forth
in or made pursuant to this Agreement will remain in full force and effect,
regardless of any investigation, or statement as to the results thereof, made by
or on behalf of any International Underwriter, the Company or any of their
respective representatives, officers or directors or any controlling person, and
will survive delivery of and payment

for the International Securities. If this Agreement is terminated pursuant to
Section 8 or if for any reason the purchase of the International Securities by
the International Underwriters is not consummated, the Company shall remain
responsible for the expenses to be paid or reimbursed by it pursuant to Section
5 and the respective obligations of the Company and the International
Underwriters pursuant to Section 7 and the obligations of the Company pursuant
to Section 9 shall remain in effect and if any International Securities have
been purchased hereunder the representations and warranties in Section 2 and all
obligations under Section 5 shall also remain in effect. If the purchase of the
International Securities by the International Underwriters is not consummated
for any reason other than solely because of the termination of this Agreement
pursuant to Section 8 or for reasons other than those relating to any of the
International Underwriters, including, without limitation, the occurrence of any
event specified in clause (iii), (iv), (v), (vi) or (vii) of Section 6(c), the
Company will reimburse the Underwriters for all out-of-pocket expenses
(including fees and disbursements of counsel) reasonably incurred by them in
connection with the offering of the International Securities.

         11. Notices. All communications hereunder will be in writing and, if
sent to the Underwriters, will be mailed, delivered, telefaxed or telegraphed
and confirmed to the Representatives at the following addresses: (i) Credit
Suisse First Boston Corporation, Eleven Madison Avenue, New York, N.Y.
10010-3629, Attention: Investment Banking Department - Transactions Advisory
Group (facsimile No.: (212) 325-4296), (ii) Salomon Smith Barney Inc., 388
Greenwich Street, 32nd floor, New York, N.Y. 10013, Attention: General Counsel
(facsimile No.: (212) 816-7912), and (iii) ABN AMRO Rothschild LLC, 55 East 52nd
Street, 36th floor, New York, N.Y. 10055, Attention: Vicki Hale (facsimile No.:
          ), or, if sent to the Company, will be mailed, delivered, telefaxed or
telegraphed and confirmed to it at Rua Engenheiro Reboucas, 1376, Curitiba, PR
80215-900, Brazil, Attention: [Chief Financial Officer] (facsimile No.:
55-41-333-4342); provided, however, that any notice to an International
Underwriter pursuant to Section 7 will be mailed, delivered or telegraphed,
telefaxed and confirmed to such International Underwriter.

         12. Successors. This Agreement will inure to the benefit of and be
binding upon the parties hereto and their respective successors and the officers
and directors and controlling persons referred to in Section 7, and no other
person will have any right or obligation hereunder.

         13. Representation of International Underwriters. The Representatives
will act for the several International Underwriters in connection with this
financing, and any action under this Agreement taken by the Representatives
jointly will be binding upon all the International Underwriters.

         14. Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all such
counterparts shall together constitute one and the same Agreement.

         15. APPLICABLE LAW. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED
IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO
PRINCIPLES OF CONFLICTS OF LAWS.

         The Company hereby irrevocably submits to the non-exclusive
jurisdiction of the Federal and state courts in the Borough of Manhattan in The
City of New York in any suit or proceeding arising out of or relating to this
Agreement or the transactions contemplated hereby, and waives any objection
which it may now or hereafter have to the laying of venue of any such suit or
proceeding. The Company irrevocably appoints CT Corporation System, 111 Eighth
Avenue, New York, NY 10011, as its authorized agent in the Borough of Manhattan
in The City of New York upon which process may be served in any such suit or
proceeding, and agrees that service of process upon such agent, and written
notice of said service to the Company by the person serving the same to the
address provided in Section 11, shall be deemed in every respect effective
service of process upon the Company in any such suit or proceeding. The Company
hereby represents and warrants that the authorized agent above has accepted such
appointment and has agreed to act as said agent for service of process. The
Company further agrees to take any and all action as may be necessary to
maintain such designation and appointment of such agent in full force and effect
for a period of six years from the date of this Agreement. Notwithstanding the
foregoing, any suit or proceeding arising out of or relating to this Agreement
or the transactions contemplated hereby may be instituted by any International
Underwriter, the directors, officers, employees and agents of any International
Underwriter, or by any person who controls any International Underwriter, in any
court of competent jurisdiction in Brazil.

         The obligation of the Company in respect of any sum due to any
International Underwriter shall, notwithstanding any judgment in a currency
other than United States dollars, not be discharged until the first business
day, following receipt by such Underwriter of any sum adjudged to be so due in
such other currency, on which (and only to the extent that) such International
Underwriter may in accordance with normal banking procedures purchase United
States dollars with such other currency; if the United States dollars so
purchased are less than the sum originally due to such International Underwriter
hereunder, the Company agrees, as a separate obligation and notwithstanding any
such judgment, to indemnify such International Underwriter against such loss. If
the United States dollars so purchased are greater than the sum originally due
to such International Underwriter hereunder, such International Underwriter
agrees to pay to the Company an amount equal to the excess of the dollars so
purchased over the sum originally due to such International Underwriter
hereunder.

         16. Waiver of Immunity. The Company is subject to civil, commercial and
administrative law and to suit in respect of its obligations under this
Agreement, and neither the Company nor any of its properties, assets or revenues
is subject to any right of immunity (sovereign or other) under Brazilian or New
York law, from any legal action,

suit or proceeding, from the giving of any relief in any such legal action, suit
or proceeding, from set-off or counterclaim, from the jurisdiction of any
Brazilian, New York or U.S. Federal court, from service of process, attachment
upon or prior to judgment, or attachment in aid of execution of judgment, or
from execution of a judgment, or other legal process or proceeding for the
giving of any relief or for the enforcement of a judgment, in any such court,
with respect to its obligations, liabilities or any other matter under or
arising out of or in connection with this Agreement; and, to the extent that the
Company or any of its properties, assets or revenues may have or may hereafter
become entitled to any such right of immunity (sovereign or other) in any such
court in which proceedings arising out of, or relating to the transactions
contemplated by this Agreement, may at any time be commenced, the Company hereby
waives or will waive such right to the extent permitted by law and consents to
such relief and enforcement as provided in Section 15 of this Agreement.


         If the foregoing is in accordance with the Representatives'
understanding of our agreement, kindly sign and return to the Company one of the
counterparts hereof, whereupon it will become a binding agreement between the
Company and the several Underwriters in accordance with its terms.

                                        Very truly yours,

                                        COMPANHIA DE SANEAMENTO DO PARANA
                                        - SANEPAR,

                                             By.................................
                                                       [Insert  title]



The foregoing Underwriting Agreement is hereby confirmed and accepted as of the
date first above written.

                  Acting on behalf of themselves and as the Representatives of
the several Underwriters.


         By CREDIT SUISSE FIRST BOSTON CORPORATION


         By.................................................
                  [Insert title]



         By SALOMON SMITH BARNEY INC.

         By.................................................
                  [Insert title]



         By ABN AMRO ROTHSCHILD LLC


         By.................................................
                  [Insert title]

                                   SCHEDULE A



                                                            [PRINCIPAL
                                                             AMOUNT OF
                                                  INTERNATIONAL FIRM SECURITIES]

                                                            [NUMBER OF
                                                  INTERNATIONAL FIRM SECURITIES]

                                                  [NUMBER OF INTERNATIONAL FIRM
                UNDERWRITER                                    ADSS]
                -----------                                    -----
                                               
Credit Suisse First Boston Corporation.....       [$]

Salomon Smith Barney Inc...................       [$]

ABN AMRO Rothschild LLC....................       [$]




                                                          ---------------
           Total...........................       [$]