Exhibit 10.1 SECOND AMENDMENT AND WAVIER TO CREDIT AGREEMENT Dated as of July 9, 2004 This SECOND AMENDMENT AND WAIVER TO CREDIT AGREEMENT (this "Agreement") is among IONICS, INCORPORATED, a Massachusetts corporation (the "Borrower"), UBS AG, STAMFORD BRANCH, in its capacity as administrative agent for the Lenders (in such capacity, the "Administrative Agent") and as collateral agent for the Secured Parties (in such capacity, the "Collateral Agent") and the Lenders signatory hereto, and is made pursuant to that certain Credit Agreement dated as February 13, 2004, as amended by that certain First Amendment to Credit Agreement dated as of March 15, 2004 (as further amended, modified, restated or supplemented from time to time, the "Credit Agreement"), among IONICS, INCORPORATED, a Massachusetts corporation, the Subsidiary Guarantors, the Lenders, the Administrative Agent, the Collateral Agent, UBS SECURITIES LLC, as lead arranger (in such capacity, the "Arranger"), sole bookmanager and documentation agent (in such capacity, the "Documentation Agent"), FLEET SECURITIES, INC. and BANK OF AMERICA, N.A., as syndication agents (in such capacity, the "Syndication Agents"), WACHOVIA BANK, N.A. and GENERAL ELECTRIC CAPITAL CORPORATION, as co-documentation agents (in such capacity, the "Co-Documentation Agents"), UBS LOAN FINANCE LLC, as swingline lender (in such capacity, "Swingline Lender"), and HSBC BANK USA, as issuing bank (in such capacity, the "Issuing Bank"). Terms used but not otherwise defined in this Agreement shall have the meaning ascribed to such terms in the Credit Agreement. PRELIMINARY STATEMENTS: 1. The Borrower has requested that the Required Lenders agree to (i) delete in its entirety existing Schedule 6.04(b) to the Credit Agreement (the "Existing Schedule") and replace it with replacement Schedule 6.04(b) to the Credit Agreement, attached hereto as Exhibit A (the "Replacement Schedule"), (ii) make such other amendments to Section 6.04(c)(ii) as set forth herein, (iii) waive for all periods from February 13, 2004 through the Amendment Effective Date (as defined below) the provisions of Section 6.04(b) of the Credit Agreement to the extent such provisions limit permitted Investments outstanding on the Closing Date to those Investments identified on the Existing Schedule; provided all such Investments outstanding on the Closing Date shall be identified on the Replacement Schedule, (iv) waive the provisions of Section 2.08(a) of the Credit Agreement with respect to the first Interest Period following the Amendment Effective Date for the $167,900,025 Borrowing to the extent such provisions require that such Borrowing have Interest Periods ending on the numerically corresponding day in the calendar month that is one, two, three or six months after the date of conversion of such Borrowing from a Borrowing based on the Alternate Base Rate to a Borrowing based on the Adjusted LIBOR Rate; provided that such first Interest Period shall end on September 30, 2004; provided further that such first Interest Period shall be available to all Lenders, and (v) waive any Default or Event of Default that may have arisen by reason of there being cash and Cash Equivalents in any account not subject to a Control Agreement in an aggregate amount in excess of $5 million in violation of the requirements set forth in Section 6.04(c)(ii) (provided that such amounts shall not have been in excess of $80 million) for all periods from February 13, 2004 through the Amendment Effective Date. 2. Subject to the terms and conditions set forth below, the Required Lenders, the Administrative Agent, and the Collateral Agent are willing to so amend the Credit Agreement. NOW, THEREFORE, in consideration of the premises and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 1. Amendments to Credit Agreement. a. Upon the terms and subject to the conditions set forth in this Agreement and in reliance on the representations and warranties of the Loan Parties set forth in this Agreement, the Credit Agreement is hereby amended such that the Existing Schedule shall be deleted in its entirety and replaced with the Replacement Schedule. b. Upon the terms and subject to the conditions set forth in this Agreement and in reliance on the representations and warranties of the Loan Parties set forth in this Agreement, Section 6.04(c)(ii) of the Credit Agreement is hereby amended and restated in its entirety as follows: "(ii) invest in, acquire and hold cash and Cash Equivalents (provided that any such amounts constituting cash and Cash Equivalents that are held in any account that is not then subject to a Control Agreement in favor of the Collateral Agent for the benefit of the Secured Parties (other than cash and Cash Equivalents (a) generated from the operations of Foreign Subsidiaries that are not required to pledge their assets pursuant to the last sentence of Section 5.11(b) (any such Foreign Subsidiary, an "Excluded Foreign Subsidiary") or (b) generated from the disposition of assets of an Excluded Foreign Subsidiary or the repayment of an intercompany loan owing to an Excluded Foreign Subsidiary, in each case, in a transaction not prohibited by the terms of this Agreement and, in each case, to the extent held by an Excluded Foreign Subsidiary in an account of such Excluded Foreign Subsidiary) shall not exceed $5 million in the aggregate at any time outstanding)," 2. Waivers. a. Required Lenders hereby waive for all periods from February 13, 2004 through the Amendment Effective Date the provisions of Section 6.04(b) of the Credit Agreement to the extent such provisions limit permitted Investments outstanding on the Closing Date to those Investments identified on the Existing Schedule; provided all such Investments outstanding on the Closing Date shall be identified on the Replacement Schedule. b. Required Lenders hereby waive the provisions of Section 2.08(a) of the Credit Agreement with respect to the first Interest Period after the Amendment Effective Date for the $167,900,025 Borrowing to the extent such provisions require that such Borrowing have Interest Periods ending on the numerically corresponding day in the calendar month that is one, two, three or six months after the date of conversion of such Borrowing from a Borrowing based on the Alternate Base Rate to a Borrowing based on the Adjusted LIBOR Rate; provided that such first Interest Period shall end on September 30, 2004; provided further that such first Interest Period shall be available to all Lenders. c. Required Lenders hereby waive any Default or Event of Default that may have arisen by reason of there being cash and Cash Equivalents in any account not subject to a Control Agreement in an aggregate amount in excess of $5 million in violation of the requirements set forth in Section 6.04(c)(ii) (provided that such amounts shall not have been in excess of $80 million) for all periods from February 13, 2004 through the Amendment Effective Date. The waivers set forth in this Section 2 shall be effective only as to the matters set forth specifically herein and shall not entitle the Borrower to any other waiver or agreement with respect to any other matter. 3. Conditions to Effectiveness. The effectiveness of this Agreement is conditioned upon the satisfaction of each of the following conditions precedent on or before July __, 2004; provided that once such conditions precedent have been satisfied this Agreement shall be deemed to be effective as of June 30, 2004 (such date, the "Amendment Effective Date"): a. the Administrative Agent shall have received counterparts of this Agreement signed by the Borrower, the Subsidiary Guarantors, the Required Lenders, the Administrative Agent and the Collateral Agent; b. each of the representations and warranties in Section 4 below shall be true and correct in all material respects as of the Amendment Effective Date and as of the date hereof; c. after giving effect to the amendments set forth in Section 1 hereof and the waivers set forth in Section 2 hereof, no Default or Event of Default shall have occurred and be continuing under the Credit Agreement or any other Loan Document; d. the Administrative Agent shall have received payment in immediately available funds of all expenses incurred by the Administrative Agent (including, without limitation, legal fees) for which invoices have been presented, on or before the Amendment Effective Date; and e. the Administrative Agent shall have received satisfactory evidence that the execution, delivery and performance of this Agreement have been duly approved by all necessary corporate action of each Loan Party. 4. Representations and Warranties. The Borrower and each of the other Loan Parties represents and warrants to the Administrative Agent, the Collateral Agent and each Lender as of the date hereof as follows: a. Authority. Each of the Loan Parties has the requisite corporate power and authority to execute and deliver this Agreement and to perform its obligations hereunder and under the Credit Agreement (as modified hereby). The execution, delivery and performance by the Borrower and each other Loan Party of this Agreement, the Credit Agreement (as modified hereby) and the transactions contemplated hereby and thereby have been duly approved by all necessary corporate action of such person and no other corporate proceedings on the part of each such person are necessary to consummate such transactions (except as expressly contemplated hereby and thereby). b. Due Execution; Enforceability. This Agreement has been duly executed and delivered by the Borrower and the other Loan Parties. Each of this Agreement and, after giving effect to this Agreement, the Credit Agreement and the other Loan Documents is the legal, valid and binding obligation of each Loan Party hereto and thereto, enforceable against such Loan Party in accordance with its terms, and is in full force and effect. Neither the execution, delivery or performance of this Agreement or of the Credit Agreement (as modified hereby), nor the performance of the transactions contemplated hereby or thereby, will adversely affect the validity, perfection or priority of the Collateral Agent's Lien, for the benefit of the Secured Parties, on any of the Collateral. c. Representations and Warranties. After giving effect to this Agreement, the representations and warranties contained in the Credit Agreement and the other Loan Documents (other than any such representations and warranties that, by their terms, are specifically made as of a date other than the date hereof) are true and correct on and as of the date hereof as though made on and as of the date hereof. d. No Conflicts. Neither the execution and delivery of this Agreement, nor the consummation of the transactions contemplated hereby, nor performance of and compliance with the terms and provisions hereof by the Borrower or any Loan Party will, at the time of such performance, (a) violate or conflict with any provision of its articles or certificate of incorporation or bylaws or other organizational or governing documents of such Person, (b) violate, contravene or materially conflict with any Requirement of Law or any other law, regulation (including, without limitation, Regulation U or Regulation X), order, writ, judgment, injunction, decree or permit applicable to it, except for any violation, contravention or conflict which could not reasonably be expected to have a Material Adverse Effect, (c) violate, contravene or conflict with contractual provisions of, or cause an event of default under, any indenture, loan agreement, mortgage, deed of trust, contract or other agreement or instrument to which it is a party or by which it may be bound, or (d) result in or require the creation of any Lien (other than those contemplated in or created in connection with the Loan Documents) upon or with respect to its properties. e. No Default. After giving effect to the amendments set forth in Section 1 hereof and the waivers set forth in Section 2 hereof, no Default or Event of Default has occurred and is continuing under the Credit Agreement or any other Loan Document. 5. Reference to and Effect on Credit Agreement. a. Upon and after the effectiveness of this Agreement, each reference in the Credit Agreement to "this Agreement", "hereunder", "hereof" or words of like import referring to the Credit Agreement, and each reference in the other Loan Documents to "the Credit Agreement", "thereunder", "thereof" or words of like import referring to the Credit Agreement, shall mean and be a reference to the Credit Agreement as modified hereby. b. Except as specifically modified above, the Credit Agreement and the other Loan Documents are and shall continue to be in full force and effect and are hereby in all respects ratified and confirmed. Without limiting the generality of the foregoing, the Security Documents and all of the Collateral described therein do and shall continue to secure the payment of all Obligations under and as defined therein, in each case as modified hereby. c. The execution, delivery and effectiveness of this Agreement shall not, except as expressly provided herein, operate as a waiver of any right, power or remedy of any Secured Party under any of the Loan Documents, nor, except as expressly provided herein, constitute a waiver or amendment of any provision of any of the Loan Documents. 6. Counterparts. This Agreement may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute one and the same agreement. Delivery of an executed counterpart of a signature page to this Agreement by facsimile shall be effective as delivery of a manually executed counterpart of this Agreement. 7. Severability. Any provision of this Agreement that is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction. 8. Governing Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York. [Signature Pages Follow] IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by their respective authorized officers as of the day and year first above written. IONICS, INCORPORATED By: /s/Daniel M. Kuzmak ------------------------------------------------- Name: Daniel M. Kuzmak Title: Vice President and Chief Financial Officer SUBSIDIARY GUARANTORS: AQUA DESIGN, INC. FIDELITY PUREWATER, INC. FIDELITY WATER SYSTEMS, INC. IONICS KOREA, INC. IONICS LIFE SCIENCES, INC. IONICS SECURITIES CORPORATION IONICS ULTRAPURE WATER CORPORATION RESOURCES CONSERVATION CO. INTERNATIONAL SEPARATION TECHNOLOGY, INC. SIEVERS INSTRUMENTS, INC. ECOLOCHEM, INC. ECOLOCHEM HOLDINGS, INC. ECOLOCHEM JV HOLDINGS, INC. By: /s/Stephen Korn ------------------------------------------------ Name: Stephen Korn Title: Secretary ECOLOCHEM SERVICES - MEXICO, LLC MOSON HOLDINGS, LLC By: Ionics, Incorporated as Managing Member By: /s/Stephen Korn ----------------------------------------------- Name: Stephen Korn Title: Vice President and General Counsel UBS AG, STAMFORD BRANCH, as Administrative Agent and Collateral Agent By: /s/Wilfred V. Saint ---------------------------------------------- Name: Wilfred V. Saint Title: Director, Banking Products Services, US By: /s/Salloz Sikka ---------------------------------------------- Name: Salloz Sikka Title: Associate Director, Banking Products Services, US LENDERS: UBS LOAN FINANCE LLC, as a Lender By: /s/Wilfred V. Saint ---------------------------------------------- Name: Wilfred V. Saint Title: Director, Banking Products Services, US By: /s/Salloz Sikka ---------------------------------------------- Name: Salloz Sikka Title: Associate Director, Banking Products Services, US Northwoods Capital III, Limited By: Angelo, Gordon & Co., L.P., as Collateral Manager By: /s/John W. Fraser ---------------------------------------------- Name: John W. Fraser Title: Managing Director Northwoods Capital II, Limited By: Angelo, Gordon & Co., L.P., as Collateral Manager By: /s/John W. Fraser ---------------------------------------------- Name: John W. Fraser Title: Managing Director Northwoods Capital IV, Limited By: Angelo, Gordon & Co., L.P., as Collateral Manager By: /s/John W. Fraser ---------------------------------------------- Name: John W. Fraser Title: Managing Director Bank of America, N.A., as a Lender By: /s/John F. Lynch ---------------------------------------------- Name: John F. Lynch Title: Senior Vice President Fleet National Bank, as a Lender By: /s/John F. Lynch ---------------------------------------------- Name: John F. Lynch Title: Senior Vice President Olympic Cloi Ltd., as a Lender By: /s/John M. Casparian ---------------------------------------------- Name: John M. Casparian Title: Chief Operating Officer Centre Pacific LLP (Manager) Apex (IDM) CDO I, Ltd. ELC (Cayman) Ltd. 1999-II ELC (Cayman) Ltd. 1999-III ELC (Cayman) Ltd. 2000-I Tryon CLO Ltd. 2000-I By: Babson Capital Management LLC as Collateral Manager, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Babson CDO Ltd. 2003-I By: Babson Capital Management LLC as Collateral Manager, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Maplewood (Cayman) Limited By: Babson Capital Management LLC under delegated authority from Massachusetts Mutual LIfe Insurance Company as Investment Manager, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Massachusetts Mutual Life Insurance Company By: Babson Capital Management LLC as Collateral Advisor, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Seaboard CLO 2000 Ltd. By: Babson Capital Management LLC as Collateral Manager, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Suffield CLO, Limited By: Babson Capital Management LLC as Collateral Manager, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Simsbury CLO, Limited By: Babson Capital Management LLC under delegated authority from Massachusetts Mutual LIfe Insurance Company as Collateral Manager, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Somers CDO, Limited By: Babson Capital Management LLC under delegated authority from Massachusetts Mutual Life Insurance Company as Collateral Manager, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Bill & Melinda Gates Foundatioin By: Babson Capital Management LLC as Investment Advisor, as a Lender By: /s/John W. Stelwagon ---------------------------------------------- Name: John W. Stelwagon Title: Managing Director Senior Debt Portfolio By: Boston Management and Research as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Eaton Vance Senior Income Trust By: Eaton Vance Management as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Eaton Vance Institutional Senior Loan Fund By: Eaton Vance Management as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Costantinus Eaton Vance CDO V. Ltd. By: Eaton Vance Management as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Eaton Vance CDO VI Ltd. By: Eaton Vance Management as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Grayson & Co. By: Boston Management and Research as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Eaton Vance VT Floating-Rate Income Fund By: Eaton Vance Management as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Eaton Vance Limited Duration Income Fund By: Eaton Vance Management as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Tolli & Co. By: Eaton Vance Management as Investment Advisor, as a Lender By: /s/Michael B. Botthof ---------------------------------------------- Name: Michael B. Botthof Title: Vice President Fidelity Advisor Series II: By: Fidelity Advisor Floating RAte High Income Fund, as a Lender By: /s/John H. Costello ---------------------------------------------- Name: John H. Costello Title: Assistant Treasurer Ballyrock CLO II Limited By: Ballyrock Investment Advisors LLC, as Collateral Manager, as a Lender By: /s/Lisa Rymut ---------------------------------------------- Name: Lisa Rymut Title: Assistant Treasurer Ballyrock CLO I Limited By: Ballyrock Investment Advisors LLC, as Collateral Manager, as a Lender By: /s/Lisa Rymut ---------------------------------------------- Name: Lisa Rymut Title: Assistant Treasurer Flagship CLO 2000-1 By: Flagship Capital Management, Inc., as a Lender By: /s/Colleen Cunniffe ---------------------------------------------- Name: Colleen Cunniffe Title: Director Flagship CLO II By: Flagship Capital Management, Inc., as a Lender By: /s/Colleen Cunniffe ---------------------------------------------- Name: Colleen Cunniffe Title: Director General Electric Capital Corporation, as a Lender By: /s/Eric Herr ---------------------------------------------- Name: Eric Herr Title: Duly Authorized Signatory HSBC Bank USA, National Association, as a Lender By: /s/Patricia Tostanoski ---------------------------------------------- Name: Patricia Tostanoski Title: Vice President LightPoint CLO-I, Ltd., as a Lender By: /s/Timothy S. Van Kirk ---------------------------------------------- Name: Timothy S. Van Kirk Title: Managing Director Longhorn CDO (Cayman) Ltd. By: Merrill Lynch Investment Manager, L.P., as Investment Advisor, as a Lender By: /s/Anthony Heyman ---------------------------------------------- Name: Anthony Heyman Title: Authorized Signatory Longhorn CDO II, Ltd. By: Merrill Lynch Investment Manager, L.P., as Investment Advisor, as a Lender By: /s/Anthony Heyman ---------------------------------------------- Name: Anthony Heyman Title: Authorized Signatory Longhorn CDO III, Ltd. By: Merrill Lynch Investment Manager, L.P., as Investment Advisor, as a Lender By: /s/Anthony Heyman ---------------------------------------------- Name: Anthony Heyman Title: Authorized Signatory Oppenheimer Senior Floating Rate Fund, as a Lender By: /s/Lisa Chaffee ---------------------------------------------- Name: Lisa Chaffee Title: Manager Harbourview CLO IV, Ltd., as a Lender By: /s/Lisa Chaffee ---------------------------------------------- Name: Lisa Chaffee Title: Manager Harbourview CLO V, Ltd., as a Lender By: /s/Lisa Chaffee ---------------------------------------------- Name: Lisa Chaffee Title: Manager Foxe Basin CLO 2003, Ltd. By: Royal Bank of Canada as Collateral Manager, as a Lender By: /s/Melissa Marano ---------------------------------------------- Name: Melissa Marano Title: Authorized Signatory Sovereign Bank, as a Lender By: /s/Daniel M. Grondin ---------------------------------------------- Name: Daniel M. Grondin Title: Senior Vice President Wachovia Bank, N.A., as a Lender By: /s/Dean Gorton ---------------------------------------------- Name: Dean Gorton Title: Vice President Re: Second Amendment and Waiver to Credit Agreement WhiteHorse I, Ltd., as a Lender By: WhiteHorse Capital Partners, L.P., as Collateral Manager By: /s/Ethan M. Underwood ---------------------------------------------- Name: Ethan M. Underwood, CFA Title: Portfolio Manager Metlife Bank National Association, as a Lender By: /s/James R. Dinsler ---------------------------------------------- Name: James R. Dinsler Title: Director Metropolitan Life Insurance Company, as a Lender By: /s/James R. Dinsler ---------------------------------------------- Name: James R. Dinsler Title: Director EXHIBIT A Replacement Schedule 6.04(b) to the Credit Agreement [See attached] Schedule 6.04(b) Existing Investments Ionics, Incorporated Advances and Trade Payables - ----------------------------------------------------------------------------------------------------------------------------- OWED TO OWED BY AMOUNT (USD) - ----------------------------------------------------------------------------------------------------------------------------- ELITE CHEMICALS PTY LTD IONICS ACAPULCO S.A. DE C.V. 52,285 - ----------------------------------------------------------------------------------------------------------------------------- GLOBAL WATER SERVICES, S.A. IONICS (UK) LTD 580,187 - ----------------------------------------------------------------------------------------------------------------------------- GLOBAL WATER SERVICES, S.A. IONICS ITALBA S.P.A. 37,716 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD GLOBAL WATER SERVICES, S.A. 344,456 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD IONICS FRANCE S.A. 1,677,271 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD IONICS IBERICA S.A. 383,277 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD FAVOURABLE TRADING LIMITED 2,678,385 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD IONICS ITALBA S.P.A. 205,702 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD IONICS VENTURES LTD 46,180 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD IONICS, INCORPORATED 1,134,524 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (UK) LTD SEPARATIONS TECHNOLOGY UK 1,407,336 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ASIA PACIFIC PTE. LTD IONICS, INCORPORATED 99,658 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ASIA PACIFIC PTE. LTD SIEVERS INSTRUMENTS, INC. 75,465 - ----------------------------------------------------------------------------------------------------------------------------- IONICS CARIBBEAN INVESTORS LTD IONICS CONSTRUCTORS TRINIDAD LTD 608,647 - ----------------------------------------------------------------------------------------------------------------------------- IONICS CONSTRUCTORS TRINIDAD LTD IONICS VENTURES LTD 180,833 - ----------------------------------------------------------------------------------------------------------------------------- FIDELITY PUREWATER, INC. FAVOURABLE TRADING LIMITED 1,705,184 - ----------------------------------------------------------------------------------------------------------------------------- FIDELITY PUREWATER, INC. IONICS, INCORPORATED 41,601,837 - ----------------------------------------------------------------------------------------------------------------------------- IONICS FRANCE S.A. IONICS ITALBA S.P.A. 259,969 - ----------------------------------------------------------------------------------------------------------------------------- IONICS FRANCE S.A. IONICS, INCORPORATED 31,737 - ----------------------------------------------------------------------------------------------------------------------------- IONICS IBERICA, S.A. IONICS ITALBA S.P.A. 5,832 - ----------------------------------------------------------------------------------------------------------------------------- IONICS IBERICA, S.A. IONICS, INCORPORATED 1,122,850 - ----------------------------------------------------------------------------------------------------------------------------- FAVOURABLE TRADING LIMITED IONICS (UK) LTD 359,162 - ----------------------------------------------------------------------------------------------------------------------------- FAVOURABLE TRADING LIMITED IONICS, INCORPORATED 22,936 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ITALBA S.P.A. IONICS (UK) LTD 947 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ITALBA S.P.A. IONICS FRANCE S.A. 1,225,087 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ITALBA S.P.A. IONICS, INCORPORATED 104,643 - ----------------------------------------------------------------------------------------------------------------------------- IONICS LIFE SCIENCES, INC. IONICS ULTRAPURE WATER CORP. 348 - ----------------------------------------------------------------------------------------------------------------------------- IONICS TAIWAN, INC IONICS ASIA PACIFIC PTY. LET. 11,200 - ----------------------------------------------------------------------------------------------------------------------------- IONICS TAIWAN, INC IONICS, INCORPORATED 36,154 - ----------------------------------------------------------------------------------------------------------------------------- IONICS TAIWAN, INC KUNSHAN IONICS 174,058 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ULTRAPURE WATER CORP. IONICS LIFE SCIENCES, INC. 49,116 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ULTRAPURE WATER CORP. IONICS WATERTEC PTY. LTD 431,396 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ULTRAPURE WATER CORP. IONICS, INCORPORATED 2,594,922 - ----------------------------------------------------------------------------------------------------------------------------- IONICS WATERTEC PTY. LTD IONICS, INCORPORATED 2,193 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED AQUA DESIGN, INC. 14,889,738 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS ACAPULCO S.A. DE C.V. 1,665,171 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS (UK) LTD 1,291,238 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS ASIA PACIFIC PTY. LTD 3,363,191 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS CARIBBEAN INVESTORS LTD 4,100 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS CONSTRUCTORS TRINIDAD LTD 11,002,734 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED FIDELITY PUREWATER, INC. 17,701,270 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS IBERICA, S.A. 1,759,408 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED FAVOURABLE TRADING LIMITED 1,814,013 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS ITALBA S.P.A. 8,524,401 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS LIFE SCIENCES, INC. 6,337,685 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS TAIWAN, INC 1,545,809 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS ULTRAPURE WATER CORP. 35,791,147 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS WATER RESOURCES 695,068 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS WATERTEC PTY. LTD 2,552,568 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED KUNSHAN IONICS LIMITED 782,315 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED SIEVERS INSTRUMENTS, INC. 1,100 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED SEPARATIONS TECHNOLOGY INC 7,881,192 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED TORAY MEMBRANE AMERICA, INC. 5,430,000 - ----------------------------------------------------------------------------------------------------------------------------- KUNSHAN IONICS LIMITED IONICS TAIWAN, INC 98,994 - ----------------------------------------------------------------------------------------------------------------------------- SEPARATIONS TECHNOLOGY UK SEPARATIONS TECHNOLOGY INC 964,041 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS (UK) LTD 2,520,135 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS ASIA PACIFIC PTY. LTD 278,084 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS FRANCE S.A. 164,379 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS ITALBA S.P.A. 20,524 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS LIFE SCIENCES, INC. 21,085 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS TAIWAN, INC 930 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS WATERTEC PTY. LTD 4,850 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS, INCORPORATED 20,854,981 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, IBERICA, S.A. IONICS, INCORPORATED 5,040,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS FRANCE S.A. IONICS, INCORPORATED 9,072,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, IBERICA, S.A. IONICS FRANCE S.A. 4,992,496 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, IBERICA, S.A. IONICS ITALBA S.P.A. 3,155,769 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, IBERICA, S.A. IONICS ITALBA S.P.A 3,786,922 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (U.K.) LIMITED IONICS FRANCE S.A. 5,921,244 - ----------------------------------------------------------------------------------------------------------------------------- IONICS VENTURES LIMITED IONICS (BERMUDA) LTD 5,000,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS VENTURES LIMITED IONICS ITALBA S.P.A 2,000,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS VENTURES LIMITED IONICS CARIBBEAN INVESTORS LTD 11,110,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS VENTURES LIMITED IONICS TAIWAN, INC. 1,030,746 - ----------------------------------------------------------------------------------------------------------------------------- IONICS VENTURES LIMITED IONICS WATER RESOURCES LTD 1,290,353 - ----------------------------------------------------------------------------------------------------------------------------- IONICS VENTURES LIMITED IONICS, INCORPORATED 52,300,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (U.K.) LIMITED IONICS VENTURES LIMITED 2,250,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (U.K.) LIMITED IONICS, INCORPORATED 9,000,000 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. AQUA DESIGN ANTIGUA LTD 136,325 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. AQUA DESIGN ANGUILLA LTD 230,633 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. AQUA DESIGN BAHAMAS LTD 297,343 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. AQUA DESIGN CURACAO NV 573,057 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. AQUA DESIGN VI, INC. 356,109 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. AQUA DESIGN B.V.I. LTD 74,078 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. AQUA DESIGN NETHERLAND ANTILLES N.V. 15,296 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. IONICS AQUA DESIGN BONAIRE N.V. 111,401 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. IONICS FRESHWATER LTD 10,037 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN, INC. BIMINI BAY WATER LTD 119,943 - ----------------------------------------------------------------------------------------------------------------------------- SIEVERS INSTRUMENTS, INC. IONICS AGAR ENVIRONMENTAL LTD 212,460 - ----------------------------------------------------------------------------------------------------------------------------- IONICS CARIBBEAN INVESTORS LTD HAFEEZ KARAMATH ENGINEERING SERVICES LIMITED 11,748,786 - ----------------------------------------------------------------------------------------------------------------------------- Investments in Project Subsidiaries - ----------------------------------------------------------------------------------------------------------------------------- INVESTOR INVESTMENT AMOUNT (USD) - ----------------------------------------------------------------------------------------------------------------------------- IONICS IBERICA, S.A. GRUPO EMPRESARIAL DE MEJORMIENTO AMBIETAL, S. DE 4,970,000 R.L. DE C.V. - ----------------------------------------------------------------------------------------------------------------------------- IONICS CARIBBEAN INVESTORS LTD DESALINATION COMPANY OF TRINIDAD AND TOBAGO 5,471,740 - ----------------------------------------------------------------------------------------------------------------------------- IONICS VENTURES LIMITED DESALINATION COMPANY OF TRINIDAD AND TOBAGO 10,177,932 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED UTILITIES DEVELOPMENT COMPANY, W.L.L. 15,200,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED MAAGAN DESALINATION LTD 1,300,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED CARMEL DESALINATION LTD* 13,300,000 (PROJECTED) - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED HAMMA WATER DESALINATION S.P.A.* 45,600,000 (PROJECTED) - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS FRESHWATER LTD 1,100,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED WATLINGTON WATERWORKS LIMITED - BERMUDA 2,735,670 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED JALAL IONICS 534,755 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED AQUA COOL SAUDI ARABIA 1,490,044 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED AQUA COOL KUWAIT 456,800 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (BERMUDA) LTD AQUA DESIGN LTD 32,973 - ----------------------------------------------------------------------------------------------------------------------------- IONICS IBERICA, S.A. UTE EL REVENTON 103,924 - ----------------------------------------------------------------------------------------------------------------------------- IONICS IBERICA, S.A. UTE TAMAIMO 3,518 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED YUASA-IONICS CO LTD 721,480 - ----------------------------------------------------------------------------------------------------------------------------- * Financial close has not yet been reached. Investments in Foreign Subsidiaries - ----------------------------------------------------------------------------------------------------------------------------- INVESTOR INVESTMENT AMOUNT (USD) - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS WATERTEC PTY LTD 1,896,012 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS ITALBA S.P.A. 1,321,251 - ----------------------------------------------------------------------------------------------------------------------------- IONICS ITALBA S.P.A. AGRINORD S.R.L. 2,093,765 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS VENTURES LIMITED 11,838,312 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS (UK) LTD 6,039,996 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS ACAPULCO, S.A. DE C.V. 1,665,320 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS AGAR ENVIRONMENTAL 76,892 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS ASIA PACIFIC PTE LTD 2,853,912 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS IBERICA, S.A. 15,448,647 - ----------------------------------------------------------------------------------------------------------------------------- IONICS IBERICA, S.A. PLANTAS DESALADORAS DE MASPALOMAS S.L. SOCIEDAD 11,010,370 UNIPERSONAL - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS (BERMUDA) LTD 552,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS TAIWAN, INC. 1,321,050 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS NEDERLAND B.V. 15,508 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS FRANCE S.A. 905,683 - ----------------------------------------------------------------------------------------------------------------------------- IONICS FRANCE S.A. IONICS WATER SERVICES 46,705 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS CONSTRUCTORS TRINIDAD LIMITED 340 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS CARIBBEAN INVESTORS LTD 10,661,628 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED HAMMA WATER DESALINATION S.P.A. 175,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS, INCORPORATED IONICS FRESHWATER LTD 625,000 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (BERMUDA) LTD AQUA DESIGN B.V.I. LIMITED 1,728,125 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (BERMUDA) LTD AQUA DESIGN ANGUILLA LIMITED 2,271,169 - ----------------------------------------------------------------------------------------------------------------------------- IONICS (BERMUDA) LTD AQUA DESIGN LIMITED CAYMAN 395,000 - ----------------------------------------------------------------------------------------------------------------------------- AQUA DESIGN B.V.I. LIMITED KUNSHAN IONICS LIMITED 510,000 - ----------------------------------------------------------------------------------------------------------------------------- Ecolochem, Inc. and its Affiliated Entities Pursuant to the Partnership Agreement dated September 18, 2001 between Nalco PWS, Inc. and Ecolochem JV Holdings, Inc., Ecolochem, Inc. is obligated to provide capital contributions to the Joint Venture in the amount of $450,000.