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                            SCHEDULE 14A INFORMATION

          Proxy Statement Pursuant to Section 14(a) of the Securities
                    Exchange Act of 1934 (Amendment No.   )

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     [ ] Preliminary Proxy Statement        [ ]  Confidential, for Use of the
                                                 Commission Only (as permitted
                                                 by Rule 14a-6(3)(2))

     [X]  Definitive Proxy Statement

     [ ]  Definitive Additional Materials

     [ ]  Soliciting Material Pursuant to sec.240.14a-11(c) or sec.240.14a-12

                         INSITUFORM TECHNOLOGIES, INC.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)

- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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                         INSITUFORM TECHNOLOGIES, INC.
                            ------------------------

                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

                           TO BE HELD ON MAY 10, 2001

                            ------------------------

                                                          Chesterfield, Missouri
                                                                  March 30, 2001

TO THE HOLDERS OF COMMON STOCK
  OF INSITUFORM TECHNOLOGIES, INC.:

     The Annual Meeting of Stockholders of Insituform Technologies, Inc.
("Insituform") will be held at the Doubletree Hotel, 16625 Swingley Ridge Road,
Chesterfield, Missouri, on Thursday, May 10, 2001, at 9:00 a.m., local time, for
the following purposes, as more fully described in the accompanying proxy
statement:

          (1) To elect eight directors of Insituform, each to serve for the
     ensuing year and until their respective successors are elected and have
     qualified;

          (2) To approve the adoption of the 2001 Employee Equity Incentive
     Plan;

          (3) To approve the adoption of the 2001 Non-Employee Director Equity
     Incentive Plan;

          (4) To approve the adoption of the Long-Term Incentive Plan; and

          (5) To transact such other business as may properly come before the
     meeting or any adjournment or adjournments thereof.

     The close of business on March 15, 2001 has been fixed by the Board of
Directors as the record date for the determination of stockholders entitled to
notice of, and to vote at, the meeting.

                                          By Order of the Board of Directors

                                          HOWARD KAILES
                                          Secretary

     You are cordially invited to attend the meeting in person. If you do not
expect to attend, please mark, sign and date the enclosed form of proxy and mail
in the enclosed return envelope, which requires no postage if mailed in the
United States, so that your vote can be recorded.
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                                PROXY STATEMENT

     This proxy statement is provided in connection with the solicitation of
proxies on behalf of the Board of Directors of Insituform Technologies, Inc.
("Insituform") for use at the 2001 Annual Meeting of Stockholders of Insituform
to be held on May 10, 2001 and at any adjournment or adjournments thereof, for
the purposes set forth in the accompanying Notice of Annual Meeting of
Stockholders. This proxy statement and the accompanying form of proxy were
mailed on or about March 30, 2001 to the persons entitled to receive the
accompanying Notice. Insituform's executive office is located at 702 Spirit 40
Park Drive, Chesterfield, Missouri 63005.

     At the close of business on March 15, 2001, the record date stated in the
accompanying Notice, Insituform had outstanding 26,830,797 shares of class A
common shares, $.01 par value ("common stock"), each of which is entitled to one
vote with respect to each matter to be voted on at the meeting. Insituform has
no class or series of voting stock outstanding other than the common stock.

     A majority of the issued and outstanding shares of common stock present in
person or by proxy will constitute a quorum for the transaction of business at
the meeting. Directors are elected by a plurality vote. The affirmative vote of
holders of a majority of the issued and outstanding shares of common stock
present in person or by proxy and entitled to vote at the annual meeting is
required to approve the adoption of the 2001 Employee Equity Incentive Plan, the
2001 Non-Employee Director Equity Incentive Plan and the Long-Term Incentive
Plan. The plans will not be made effective until they are approved by the
holders of a majority of shares of common stock present in person or represented
by proxy and entitled to vote at the annual meeting.

     If the accompanying form of proxy is executed and returned, the shares
represented thereby will be voted in accordance with the terms of the proxy,
unless the proxy is revoked. If no directions are indicated in such proxy, the
shares represented thereby will be voted FOR the eight nominees proposed by the
Board of Directors and FOR approval of the adoption of the 2001 Employee Equity
Incentive Plan, the 2001 Non-Employee Director Equity Incentive Plan and the
2001 Long-Term Equity Incentive Plan. Any proxy may be revoked at any time by
giving written notice to Insituform's Secretary prior to the actual vote at the
annual meeting. The casting of a later dated ballot or proxy at the annual
meeting by a stockholder who may have given a proxy earlier will have the effect
of revoking the prior proxy.

     Abstentions are counted as present for the purpose of determining the
presence or absence of a quorum for the transaction of business. Broker
non-votes will be counted as present for the purpose of determining the presence
or absence of a quorum to the extent that such shares are voted on any matter
presented at the meeting. For the purpose of determining the vote required for
approval of matters to be voted on at the meeting, shares held by stockholders
who abstain from voting and broker non-votes deemed to be present at the meeting
will be treated as being "present" and "entitled to vote" on the matter.
Therefore, an abstention or a broker non-vote deemed to be present at the
meeting will have the same effect as a vote at the meeting against the proposals
to approve the adoption of the 2001 Employee Equity Incentive Plan, the 2001
Non-Employee Director Equity Incentive Plan and the Long-Term Incentive Plan. A
broker non-vote which is not deemed to be present at the meeting will have no
effect on the results of the vote on such matters. In the election of directors,
a broker non-vote or the withholding of a proxy's authority will have no effect
on the outcome of the vote. A "broker non-vote" means shares represented at the
meeting in person or by proxy by a broker or nominee where the broker or nominee
(i) has not received voting instructions on a particular matter from the
beneficial owner or persons entitled to vote; and (ii) the broker or nominee
does not have the discretionary voting power on the matter.

     All costs relating to the solicitation of proxies will be borne by
Insituform. Proxies may be solicited by officers, directors and regular
employees of Insituform and its subsidiaries personally, by mail or by
telephone, and Insituform may pay brokers and other persons holding shares of
stock in their names or those of their nominees for the reasonable expenses in
sending soliciting material to their principals. Insituform has engaged Morrow &
Co., 444 Park Avenue, New York, New York 10022, to aid in the solicitation of
proxies with respect to the annual meeting for a fee estimated at $6,000 plus
reimbursement for reasonable and customary out-of-pocket expenses.
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     It is important that proxies be returned promptly. If you do not expect to
attend the annual meeting in person, you are urged to mark, sign and date the
accompanying form of proxy and mail it in the enclosed return envelope, which
requires no postage if mailed in the United States, so that your votes can be
recorded.

                                  PROPOSAL 1:

                             ELECTION OF DIRECTORS

     At the meeting, stockholders will elect eight directors, each to serve a
term of one year and until a successor has been elected and has qualified. It is
the intention of each of the persons named in the accompanying form of proxy to
vote the shares represented thereby in favor of the eight nominees listed under
"Certain Information Concerning Nominees and Directors" below, unless otherwise
instructed in the proxy. Each director nominee is presently serving as a
director of Insituform. Insituform's Board of Directors has no reason to believe
that any of the nominees listed below will be unable or will decline to serve.
In case any of the nominees is unable or declines to serve, the persons named in
the accompanying form of proxy will vote the shares represented by the proxy for
another person duly nominated by the Board of Directors to act in the nominee's
place, or, if no other person is so nominated, to vote the shares only for the
remaining nominees.

     Russell B. Wight, Jr. was a member of Insituform's Board of Directors
during the fiscal year ended December 31, 2000. Mr. Wight resigned from the
Board effective as of February 22, 2001. There was not sufficient time for the
Board to qualify a replacement for Mr. Wight prior to distribution of proxy
materials for the annual meeting. The Board intends to conduct a search for an
appropriate replacement candidate and appoint a replacement when qualified.

CERTAIN INFORMATION CONCERNING NOMINEES AND DIRECTORS

     Certain information concerning the nominees for election as directors is
set forth below. This information was furnished to Insituform by the nominees.

          ROBERT W. AFFHOLDER, age 65; Senior Executive Vice President of
     Insituform since 1996; Senior Vice President -- Chief Operating Officer of
     North American Contracting Operations of Insituform from 1995 to 1996; Vice
     Chairman and President, Insituform Mid-America, Inc., until 1995; Director
     of Insituform since 1995; Member of Non-Insider Stock Option Committee.

          PAUL A. BIDDELMAN, age 55; President, Hanseatic Corporation (private
     investment company) since 1997, and Treasurer from before 1996 to 1997;
     Director: Celadon Group, Inc., Six Flags, Inc., Star Gas LLC (general
     partner of Star Gas Partners, L.P.), SystemOne Technologies Inc.; Director
     of Insituform since 1988; Chair of Audit Committee.

          STEPHEN P. CORTINOVIS, age 51; Vice President International and
     President -- Europe, Emerson Electric Co. since before 1996; Director of
     Insituform since 1997; Chair of Compensation Committee.

          JUANITA H. HINSHAW, age 56; Senior Vice President and Chief Financial
     Officer of Graybar Electric Company, Inc. (electrical and communications
     distributor) since May 2000; Chief Financial Officer, Highlights of
     Ophthalmology International, Inc. (publishing company) from 1999 until
     October 2000; Vice President and Treasurer, Monsanto Company from before
     1996 to 1999; Director: Graybar Electric Company, Inc.; Director of
     Insituform since February 2000; Member of Audit Committee and Compensation
     Committee.

          ANTHONY W. HOOPER, age 53; Chairman of the Board of Insituform since
     1997, and Insituform's President since 1996; prior to 1996, Senior Vice
     President-Marketing and Technology of Insituform; Chair of Non-Insider
     Stock Option Committee.

          THOMAS N. KALISHMAN, age 37; Chairman of the Board of Maverix.net,
     Inc. (a telecommunications company that filed for bankruptcy in January
     2001) since 1999; President of Insituform's United Pipeline Systems
     division during 1998; Director -- East Group of North American

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     Pipe Rehabilitation of Insituform from 1997 to 1998; Operations
     Manager -- Southeast Region of Insituform until 1996; Director of
     Insituform since 1998.

          SHELDON WEINIG, age 73; Adjunct Professor at Columbia University since
     before 1996 and at State University of New York, Stony Brook since before
     1996; Consultant, Sony Engineering and Manufacturing of America until 1996;
     Director: Intermagnetics General Corporation; Director of Insituform since
     1992; Member of Audit Committee.

          ALFRED L. WOODS, age 57; President, Woods Group (a management
     consulting company) since before 1996; Director of Insituform since 1997;
     Member of Compensation Committee.

     No family relationship exists between any of the directors or executive
officers of Insituform.

BOARD MEETINGS AND COMMITTEES

     During the year ended December 31, 2000, the Board of Directors of
Insituform held five meetings. No director attended fewer than 75% of the
aggregate number of Board meetings and meetings of committees of the Board on
which the director served during 2000. The Board of Directors has an Audit
Committee, a Compensation Committee and a Non-Insider Stock Option Committee.
The Board dissolved its Nominating Committee in 2000. Currently, the Board acts
as a nominating committee. Stockholders also may make nominations for directors.
Stockholders wishing to propose nominees for consideration at the 2002 Annual
Meeting of Stockholders must comply with a By-law provision dealing with
nominations. For a discussion of the nominating procedures, see "Stockholder
Proposals."

     The members of the Audit Committee of the Board of Directors are Paul A.
Biddelman (Chair), Juanita H. Hinshaw and Sheldon Weinig. The Audit Committee is
responsible for overseeing that management fulfills its responsibilities in
connection with the preparation of the consolidated financial statements of
Insituform and its subsidiaries. The committee's functions include making
recommendations to the Board regarding the engaging and discharging of
Insituform's independent auditors, reviewing with the independent auditors the
plan and the results of the auditing engagement, reviewing the scope and results
of Insituform's procedures for internal auditing, approving the professional
services provided by the independent auditors and reviewing the independence of
the independent auditors. During the year ended December 31, 2000, the Audit
Committee held six meetings. A copy of the Audit Committee's Charter is attached
hereto as Appendix A.

     The members of the Compensation Committee of the Board of Directors are
Stephen P. Cortinovis (Chair), Juanita H. Hinshaw and Alfred L. Woods. The
functions of the Compensation Committee include making recommendations to the
Board of Directors of Insituform regarding the salaries, bonuses, fringe
benefits or compensation of any kind for the officers and directors of
Insituform. During the year ended December 31, 2000, the Compensation Committee
held two meetings.

     The members of the Non-Insider Stock Option Committee of the Board of
Directors are Anthony W. Hooper (Chair) and Robert W. Affholder. After the Board
of Directors approves an aggregate number of option grants, the Non-Insider
Stock Option Committee makes specific grants of stock options under the 1992
Employee Stock Option Plan to employees who are not subject to Section 16 of the
Securities and Exchange Act of 1934, as amended. During the year ended December
31, 2000, the Non-Insider Stock Option Committee held one meeting.

                             DIRECTOR COMPENSATION

     Each director of Insituform who is not an operating officer of Insituform
is entitled to receive compensation in the amount of $16,000 per annum and
$1,500 per meeting of the Board of Directors, or committee of the Board,
attended by such director ($750 in the case of telephonic meetings and committee
meetings held in conjunction with Board meetings), plus reimbursement of his or
her expenses. Directors who are operating officers of Insituform do not receive
any additional compensation for their service as director.

     In addition, on February 17, 2000, Insituform granted options under its
1992 Director Stock Option Plan (the "Director Plan") covering 7,500 shares of
common stock to each of the current directors, except

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Ms. Hinshaw, who was not appointed to the Board until February 28, 2000. All of
these options are currently exercisable at a price per share equal to $28.94,
the closing price per share of the common stock on The Nasdaq National Market on
the date of grant, and expire ten years from the date of grant. On February 28,
2000, Insituform granted options under the Director Plan covering 7,500 shares
of common stock to Ms. Hinshaw. These options are currently exercisable at a
price per share equal to $27.41, the closing price per share of the common stock
on The Nasdaq National Market on the date of grant, and expire ten years from
the date of grant.

                             EXECUTIVE COMPENSATION

     Summary Compensation Table.  The following table sets forth certain
information with respect to compensation for each of Insituform's last three
completed fiscal years of Insituform's chief executive officer and other current
executive officers. In addition, this information is provided for Robert L.
Kelley, Insituform's former Vice President -- General Counsel, who would have
been among the four most highly compensated executive officers during the most
recent fiscal year, but was not an executive officer at the end of 2000.



                                                                                        LONG TERM
                                                                                      COMPENSATION
                                                                               ---------------------------
                                           ANNUAL COMPENSATION                  NUMBER OF
                             -----------------------------------------------    SECURITIES
                             FISCAL                               OTHER         UNDERLYING     ALL OTHER
NAME AND PRINCIPAL POSITION   YEAR    SALARY(1)    BONUS     COMPENSATION(2)    OPTIONS(#)    COMPENSATION
- ---------------------------  ------   ---------   --------   ---------------   ------------   ------------
                                                                            
Anthony W. Hooper.........    2000    $460,417    $350,625      $     --          50,000        $ 16,429(3)
  Chairman of the Board,      1999     420,833     425,000            --          35,000          16,199
  President and Chief         1998     392,917     274,400            --         140,000          18,460
  Executive Officer
Robert W. Affholder.......    2000    $125,000          --            --           7,500        $ 10,060(4)
  Senior Executive            1999     125,000          --            --              --          10,341
  Vice President              1998     250,000          --            --          15,000          20,748
Joseph A. White...........    2000    $220,417     114,067            --          17,400          15,782(5)
  Vice President --           1999      73,320      41,098      $144,417(6)       15,000          15,310
  Chief Financial Officer     1998          --          --            --              --              --
Carroll W. Slusher........    2000    $197,833     120,000            --          17,400        $ 15,732(7)
  Vice President --           1999     185,833     101,010            --          15,000          16,349
  North America               1998          --          --            --              --              --
Antoine Menard............    2000    $118,305(8)    7,724            --           6,500              --
  Vice President --           1999     122,526      75,165            --          10,000              --
  Europe                      1998          --          --            --              --              --
Thomas A. A. Cook(9)......    2000    $ 62,180      31,554            --          15,000        $  2,126(10)
  Vice President --           1999          --          --            --              --              --
  General Counsel             1998          --          --            --              --              --
Robert L. Kelley(11)......    2000    $158,955          --            --           9,000        $837,379(12)
  Former Vice President --    1999     195,883     107,144            --          10,000          14,084
  General Counsel             1998     190,300     104,741            --              --          16,377


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 (1) Includes amounts earned but deferred at the election of the executive under
     Insituform's non-qualified deferred compensation plan (the "Deferred
     Compensation Plan").

 (2) Excludes perquisites and other personal benefits unless the aggregate
     amount of such compensation exceeds the lesser of either $50,000 or 10% of
     the total of annual salary and bonus reported for the named executive
     officer.

 (3) Represents $6,400 in employer-matching contributions under Insituform's
     401(k) Profit-Sharing Plan (the "401(k) Profit-Sharing Plan"), $8,500 in
     profit-sharing contributions under the 401(k) Profit-Sharing Plan, $400 in
     employer-matching contributions under the Deferred Compensation Plan and
     $1,129 in term life insurance premiums.

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 (4) Represents $2,917 in employer-matching contributions under the 401(k)
     Profit-Sharing Plan, $6,250 in profit-sharing contributions under the
     401(k) Profit-Sharing Plan and $893 in term life insurance premiums.

 (5) Represents $5,251 in employer-matching contributions under the 401(k)
     Profit-Sharing Plan, $8,500 in profit-sharing contributions under the
     401(k) Profit-Sharing Plan, $1,549 in employer-matching contributions under
     the Deferred Compensation Plan and $482 in term life insurance premiums.

 (6) Represents $85,345 paid pursuant to Insituform's Relocation Plan and
     $59,072 in reimbursement of taxes.

 (7) Represents $4,610 in employer-matching contributions under the 401(k)
     Profit-Sharing Plan, $8,500 in profit-sharing contributions under the
     401(k) Profit-Sharing Plan, $2,190 in employer-matching contributions under
     the Deferred Compensation Plan and $432 in term life insurance premiums.

 (8) Mr. Menard's salary for the year ended December 31, 2000 was 854,000 French
     francs. Mr. Menard's salary was converted to U.S. dollars for purposes of
     this table using the conversion rate on February 21, 2001, the date on
     which the Board approved Mr. Menard's bonus (in U.S. dollars) for the 2000
     fiscal year.

 (9) Mr. Cook became Vice President -- General Counsel of Insituform in
     September 2000.

(10) Represents $2,000 in employer-matching contributions under the 401(k)
     Profit-Sharing Plan and $126 in term life insurance premiums.

(11) Mr. Kelley resigned as an executive officer of Insituform in September
     2000.

(12) Represents $5,408 in employer-matching contributions under the 401(k)
     Profit-Sharing Plan, $8,500 in profit-sharing contributions under the
     401(k) Profit-Sharing Plan, $1,392 in employer-matching contributions under
     the Deferred Compensation Plan, $511 in term life insurance premiums and
     $821,568 in severance payments under Mr. Kelley's agreement with
     Insituform. See "Certain Agreements with Directors and Executive Officers"
     below.

     Option Grant Table.  The following table sets forth certain information
regarding options granted by Insituform during the year ended December 31, 2000
to the individuals named in the Summary Compensation Table.

                       OPTION GRANTS IN LAST FISCAL YEAR



                                              INDIVIDUAL GRANTS                      POTENTIAL REALIZABLE
                           -------------------------------------------------------     VALUE AT ASSUMED
                           NUMBER OF                                                 ANNUAL RATES OF STOCK
                           SECURITIES      % OF TOTAL                                 PRICE APPRECIATION
                           UNDERLYING    OPTIONS GRANTED    EXERCISE                  FOR OPTION TERM(2)
                            OPTIONS       TO EMPLOYEES        PRICE     EXPIRATION   ---------------------
NAME                       GRANTED(#)   IN FISCAL YEAR(1)   ($/SHARE)      DATE         5%          10%
- ----                       ----------   -----------------   ---------   ----------   ---------   ---------
                                                                               
Anthony W. Hooper........   42,500(3)         7.45            28.94      2/17/05     $339,803    $750,897
                             7,500(3)         1.32            28.94      2/17/10      136,502     345,922
Robert W. Affholder......    7,500(3)         1.32            28.94      2/17/10      136,502     345,922
Joseph A. White..........   17,400(4)         3.05            28.94      2/17/05      139,123     307,426
Carroll W. Slusher.......   17,400(4)         3.05            28.94      2/17/05      139,123     307,426
Antoine Menard...........    6,500(4)         1.14            28.94      2/17/05       51,971     114,843
Thomas A. A. Cook........   15,000(4)         2.63            32.19      9/11/05      133,392     294,762
Robert L. Kelley.........    9,000(4)         1.58            28.94      3/31/03       41,055      86,212


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(1) Includes options granted to Messrs. Hooper and Affholder under the Director
    Plan.

(2) Amounts represent hypothetical gains that could be achieved for the
    respective options if exercised at the end of the option term. These gains
    are based on arbitrarily assumed rates of stock price appreciation of 5% and
    10% compounded annually from the date the respective options are granted to
    their expiration date.

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(3) These options were granted under the Director Plan, with one-quarter of Mr.
    Hooper's options exercisable upon grant and the remainder becoming
    exercisable in three equal annual installments thereafter.

(4) These options were granted under Insituform's 1992 Employee Stock Option
    Plan, with one-quarter of the options exercisable upon grant and the
    remainder becoming exercisable in three equal annual installments
    thereafter.

     Aggregate Option Exercises and Year-End Option Table.  The following table
sets forth certain information regarding exercises of stock options, and stock
options held as of December 31, 2000, by the individuals named in the Summary
Compensation Table.

                 AGGREGATE OPTION EXERCISES IN LAST FISCAL YEAR
                       AND FISCAL YEAR-END OPTION VALUES



                                                            NUMBER OF SECURITIES
                                                           UNDERLYING UNEXERCISED         VALUE OF UNEXERCISED
                                                                 OPTIONS AT              IN-THE-MONEY OPTIONS AT
                               SHARES                        FISCAL YEAR-END(#)           FISCAL YEAR-END($)(1)
                             ACQUIRED ON      VALUE      ---------------------------   ---------------------------
NAME                         EXERCISE(#)   REALIZED($)   EXERCISABLE   UNEXERCISABLE   EXERCISABLE   UNEXERCISABLE
- ----                         -----------   -----------   -----------   -------------   -----------   -------------
                                                                                   
Anthony W. Hooper..........    25,000       $696,875       292,125        131,875      $8,149,322     $2,866,366
Robert W. Affholder........        --             --        31,500             --         753,075             --
Joseph A. White............        --             --        11,850         20,550         192,880        288,014
Carroll W. Slusher.........        --             --        23,850         23,550         611,830        426,839
Antoine Menard.............    15,000        342,195        17,425         12,575         481,094        264,521
Thomas A. A. Cook..........        --             --         3,750         11,250          28,828         86,484
Robert L. Kelley...........    41,250        887,685         3,000         14,750          93,375        294,361


- ---------------
(1) Calculated on the basis of the fair market value of the underlying
    securities at fiscal year-end, minus the exercise price.

            CERTAIN AGREEMENTS WITH DIRECTORS AND EXECUTIVE OFFICERS

     In July 1998, Insituform entered into arrangements with Anthony W. Hooper,
Insituform's Chairman of the Board, President and Chief Executive Officer, which
replaced prior arrangements with Mr. Hooper, including the severance benefits
surrendered by Mr. Hooper under his 1997 agreement extended by Insituform and
more fully described below. The current arrangements provide for a base salary,
subject to annual review, in addition to bonus payments in an amount calculated
as a percentage of base salary with a center point objective of 50%, intended to
provide an opportunity of up to twice the center point. The current arrangements
with Mr. Hooper also provide that option grants become immediately exercisable
in the event of specified changes in control of Insituform.

     Under these arrangements, Insituform also provides Mr. Hooper with a car
allowance, reimbursement for one country club membership and medical and life
insurance benefits. The arrangements also provide that, in the event Mr.
Hooper's employment is terminated without "cause" or he resigns with "good
reason" (as defined therein), he will be entitled to base salary and bonus over
a period of 18 months (or 30 months, if following specified changes in control
of Insituform), subject to payment, at his election, in a lump sum at a
discounted rate, and in all cases, together with excise taxes due, if any, and
coverage during the foregoing period under Insituform's welfare plans (or
equivalent coverage).

     In connection with Mr. Hooper's relocation to Insituform's new headquarters
facilities in Chesterfield, Missouri, and in addition to the amounts extended to
Mr. Hooper under Insituform's Relocation Plan, in September 1997, Insituform
extended a loan to Mr. Hooper in the amount of $200,000, due on the fifth
anniversary thereof, or earlier in the event of cessation of employment. The
loan accrues interest after default at the rate of 1% per month, and does not
accrue interest prior to default except as specified therein.

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     In connection with Insituform's acquisition of Insituform Mid-America, Inc.
("IMA") in October 1995, Insituform entered into an employment agreement with
Robert W. Affholder. Under Mr. Affholder's agreement, as amended, which has been
extended through December 2001, Mr. Affholder serves as Senior Executive Vice
President of Insituform, receives an annual salary of $125,000, and devotes
one-half of his business time to Insituform's affairs. In the event of Mr.
Affholder's death, the agreement terminates automatically. In addition, it is
terminable by Insituform upon the failure of Mr. Affholder to perform his duties
thereunder owing to illness or other incapacity, if the illness continues for a
period of six months, or for other "cause" (as defined in the agreement). Mr.
Affholder's arrangements with Insituform entitle him to participate in medical
and other employee benefit plans and to the use of an automobile. Mr. Affholder
has also entered into a non-competition agreement with Insituform extending from
the completion of Insituform's acquisition of IMA until the later of five years
thereafter or two years after all service to Insituform has ended.

     In June 1997, Insituform entered into severance agreements (the "1997
Agreements") with Mr. Hooper and with Robert L. Kelley, Insituform's Vice
President -- General Counsel until September 2000, which provided that,
subsequent to the occurrence of specified events during a period of three years
after the date of the agreement, if the employment of such officer was
terminated without "cause" or the officer resigned with "good reason" (as those
terms were defined under such agreements), or the officer resigned for any
reason during a 30-day period (the "Election Period") following the anniversary
of the specified events, the officer was entitled to the benefits set forth in
the agreement. The election of two members of the Board of Directors in October
1997 outside of the procedures provided for under Insituform's acquisition
agreement with IMA was one of the specified events. The benefits to which each
officer was entitled upon severance from Insituform as aforesaid included an
amount, payable within 30 days after severance, equal to three times
compensation (including base salary and bonus, as defined, and accrued
supplemental retirement benefits) plus amounts to cover any excise taxes due, if
any, and coverage for a period of three years under Insituform's welfare plans
(or equivalent coverage).

     In March 1999, Insituform entered into additional arrangements with Mr.
Kelley providing that he will be entitled to the benefits under the 1997
Agreement applicable to resignation for any reason during the Election Period,
fixed at an amount calculated as if termination had occurred during the Election
Period payable on December 31, 2002 or, if later, upon six months' prior written
notice of voluntary termination by him, or earlier as follows: (i) within 30
days after termination by Insituform of his employment for any reason, or in the
event of death or disability; (ii) within six months after termination by him of
employment for "good reason" (as defined under the agreement); or (iii) within
30 days after termination by him of employment during the 30-day period
following the first anniversary of specified changes in control of Insituform.
Such arrangements also cover excise taxes due, if any, and coverage for a period
of three years under Insituform's welfare plans (or equivalent coverage).
Following Mr. Kelley's departure in September 2000, Insituform made aggregate
payments to Mr. Kelley under these arrangements in the amount of $821,568.

     Antoine Menard, Vice President-Europe of Insituform, is entitled to
severance upon termination, other than for specified causes, calculated as the
greater of twelve months base salary or any amount prescribed by law.

     In August 1999, Insituform entered into employment arrangements with Joseph
A. White, in connection with his appointment as Vice President-Chief Financial
Officer of Insituform, which provide for an initial annual base salary at the
rate of $215,000, subject to annual review, in addition to bonus payments in an
amount calculated as a target rate of 50% of his annual base salary, and an
initial grant of options under the 1992 Employee Stock Option Plan (the
"Employee Plan") covering 15,000 shares of common stock. Mr. White's
arrangements further provide that, in the event employment is terminated without
cause within the first 24 months, he will be entitled to severance in an amount
equal to two years' base salary, payable in a lump sum, net of aggregate base
salary paid since the commencement of employment.

             REPORT OF BOARD OF DIRECTORS ON EXECUTIVE COMPENSATION

     The Compensation Committee of Insituform's Board of Directors currently
consists of three directors, Stephen P. Cortinovis (Chair), Juanita H. Hinshaw
and Alfred L. Woods, none of whom is an executive
                                        7
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officer of Insituform. The Compensation Committee makes recommendations to the
Board of Directors regarding the compensation arrangements for Insituform's
executive officers, including the Chief Executive Officer. Administration of the
Employee Plan, under which stock options may be awarded to executive officers
who are not directors, and of the Director Plan, under which options may be
awarded to executive officers who serve on the Board, is vested in the entire
Board of Directors.

     The objectives of the Compensation Committee in recommending executive
compensation to the Board of Directors are: (i) to offer levels of compensation
which are competitive with those offered by other companies in similar
businesses; (ii) to compensate executives based on each executive's level of
responsibility and contribution to Insituform's business goals; (iii) to link
compensation with Insituform's financial performance; and (iv) to align the
interests of Insituform's executives with the interests of Insituform's
stockholders.

     During the year ended December 31, 2000, the achievement of the foregoing
objectives was directed to the support of Insituform's principal business
strategies, including a continuation of the improved profitability in
Insituform's core business. In its last fiscal year, these strategies resulted
in significant improvement to Insituform's operations, which demonstrated an
increase in consolidated net income of approximately 34% compared to the prior
year while the market price of Insituform's common stock (as more fully
described below under "Performance Graph") increased approximately 41%.

     As a result of the foregoing objectives, the compensation program for
Insituform's executives, including its Chief Executive Officer, has been
formulated to consist principally of base salary, bonuses and stock options, as
follows:

     Base Salary.  The Compensation Committee evaluates executive base salaries
by level of responsibility, individual performances and Insituform's
performance, as well as by the need to provide a competitive package that allows
Insituform to retain key executives. At the commencement of each year, the Chief
Executive Officer, in consultation with key executives, establishes individual
performance objectives for the ensuing year. After reviewing individual
performance, Insituform's performance and available information on salaries at
other companies of similar size (with particular focus on other
construction-based operations), the Chief Executive Officer makes
recommendations to the Compensation Committee concerning the base salaries of
executive officers.

     The Compensation Committee reviews and, with any changes it deems
appropriate, approves the recommendations of the Chief Executive Officer for
submission to the Board of Directors. Using the same review process, the
Compensation Committee makes decisions pertaining to the Chief Executive
Officer.

     During the year ended December 31, 2000, remuneration as President and
Chief Executive Officer to Mr. Hooper was initially at the rate of $425,000 per
annum. In March 2000, Mr. Hooper's base salary was increased to $467,500 per
annum in connection with the annual review of his performance, at the
recommendation of the Compensation Committee and upon authorization of the full
Board of Directors. Insituform also remains party to certain loan arrangements
extended to Mr. Hooper in connection with his relocation to Chesterfield in July
1997, as described under "Certain Agreements with Directors and Executive
Officers" above.

     Cash Bonuses.  Under historical guidelines designed to motivate and reward
key management personnel through the award of cash bonuses, the Chief Executive
Officer and executive officers who report to the Chief Executive Officer are
eligible for bonuses calculated as a percentage of base salary, which in the
case of executives who report to the Chief Executive Officer are up to
approximately 50% of base salary. Such guidelines have typically provided for an
award of cash bonuses based on the achievement of corporate goals recommended by
senior executive management and approved by the Board of Directors, individual
objectives established for executive management by the Compensation Committee in
discussions with the Chief Executive Officer and an evaluation of executive
management by the Compensation Committee.

     For the year ended December 31, 2000, bonus amounts earned by the Chief
Executive Officer were in the amount of $350,625, based on the Compensation
Committee's evaluation of such specific factors as Insituform's continued
substantial progress in improving profitability and earnings per share, and the
enhanced
                                        8
   11

stockholder value represented by the increased market value of Insituform's
securities. As part of his employment arrangements entered into in July 1998,
Mr. Hooper is entitled to bonus payments in an amount calculated as a percentage
of base salary with a center point objective of 50%, intended to provide an
opportunity of up to twice the center point.

     Stock Options.  The primary purpose of Insituform's stock option program is
to align the interests of Insituform's executive officers more closely with the
interests of Insituform's stockholders by offering the executives an opportunity
to benefit from increases in the market price of the common stock. Insituform's
stock option program provides long-term incentives that have enabled Insituform
to attract and retain key employees by encouraging their ownership of
Insituform's common stock. In connection with attracting new executive
management, the Compensation Committee has typically authorized the grant of
options effective upon commencement of employment.

     Insituform's current executive officers, collectively, hold options under
the Employee Plan and, in the case of Messrs. Hooper and Affholder, under the
Director Plan. During the year ended December 31, 2000, Insituform authorized an
option grant under the Director Plan covering 42,500 shares to the Chief
Executive Officer in connection with his annual review for the prior year, and
an option grant covering 7,500 shares as a director. In March 2001, as a result
of the annual review of performance for 2000, Insituform authorized an option
grant under the Director Plan to the Chief Executive Officer covering 75,072
shares. In defining the limits of option grants for executive officers and in
selecting individual officers for options and determining the terms thereof,
Insituform will continue to take into consideration any factors it deems
relevant, including present and potential contributions to Insituform's success.

     Pursuant to the recommendation of the Compensation Committee, the Board of
Directors has also adopted, effective February 1, 1999, a non-qualified,
deferred compensation plan for key employees, under which highly-compensated
employees, including executive management, will be able to defer, at their
election, up to specified maximum amounts of compensation by contribution of
such amounts to the plan. The plan allows for base pay deferral, when aggregated
with 401(k) base pay contributions under the 401(k) Profit-Sharing Plan, of up
to 15% of base salary, and bonus deferral, in addition to 401(k) bonus
contributions under the 401(k) Profit-Sharing Plan, of up to 50% of bonus
amounts. Under the plan, Insituform will match the first 3% of contributions at
a 100% rate, and the next 2% of contributions at a 50% rate (limited to
compensation up to $160,000 per annum). Contributions under the plan increase by
an amount to match the performance of participant-selected indices. Insituform
has the option to actually invest participant contributions in whatever manner
it chooses. Subject to claims of creditors, Insituform will pay account balances
to participants after termination of employment based on their deferrals into
the accounts and the investment performance from their selected indices.

     Section 162(m) ("Section 162") of the Internal Revenue Code of 1986, as
amended (the "Code"), generally limits federal income tax deductions for
compensation to the Chief Executive Officer and Insituform's four other most
highly compensated officers to $1 million per year, but contains an exception
for performance-based compensation that satisfies certain conditions. Insituform
has not adopted an absolute policy regarding Section 162. In making compensation
decisions, Insituform will consider the net cost of compensation to it and
whether it is practicable and consistent with other compensation objectives to
qualify Insituform's incentive compensation under the applicable exemption of
Section 162. Insituform anticipates that deductibility of compensation payments
will be one among a number of factors used in ascertaining appropriate levels or
modes of compensation, and that Insituform will make its compensation decision
based upon an overall determination of what it believes to be in the best
interests of its stockholders.

     The foregoing report on executive compensation is provided by the following
directors, constituting the entire Board of Directors:


                      
  Robert W. Affholder    Anthony W. Hooper
  Paul A. Biddelman      Thomas N. Kalishman
  Stephen P. Cortinovis  Sheldon Weinig
  Juanita H. Hinshaw     Alfred L. Woods


                                        9
   12

     Notwithstanding anything set forth in any of Insituform's previous filings
under the Securities Act of 1933 or the Securities Exchange Act 1934 which might
incorporate future filings, including this proxy statement, in whole or in part,
the preceding report shall not be deemed incorporated by reference into any such
filings.

          COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

     Prior to October 25, 2000, Insituform's Compensation Committee consisted of
Stephen P. Cortinovis (Chair), Robert W. Affholder and Alfred L. Woods. Mr.
Affholder was the only member of the Compensation Committee who was an officer
of Insituform. On October 25, 2000, Mr. Affholder was replaced by Juanita H.
Hinshaw on the Compensation Committee. Insituform's Employee Plan (under which
executive officers who are not directors are granted stock options) and its
Director Plan (under which executive officers who are directors are granted
stock options) were, during the year ended December 31, 2000, administered by
the entire Board of Directors which, in addition to the foregoing directors,
included Paul A. Biddelman, Anthony W. Hooper, Thomas N. Kalishman, Sheldon
Weinig and Russell B. Wight, Jr. (who resigned from the Board in February 2001),
none of whom, with the exception of Messrs. Hooper, Affholder and Kalishman, is
currently an officer or was formerly an officer of Insituform.

     A subsidiary of Insituform is party to a tunneling equipment lease
agreement with A-Y-K-E Partnership, whose partners during the year ended
December 31, 2000 consisted of Mr. Affholder and Nancy F. Kalishman, Thomas N.
Kalishman's mother. The agreement covers equipment held by the partnership for
lease both to Insituform's subsidiary and other parties, as available, and is
terminable upon 30 days prior notice by either party. During the year ended
December 31, 2000, A-Y-K-E partnership was paid $392,750 under such
arrangements.

                         REPORT OF THE AUDIT COMMITTEE

     The Audit Committee of the Board of Directors currently consists of three
"independent" directors, Paul A. Biddelman (Chair), Juanita H. Hinshaw and
Sheldon Weinig. The Audit Committee reviewed and discussed Insituform's audited
December 31, 2000 financial statements with Insituform's management. In
addition, the Audit Committee discussed with Insituform's auditors, Arthur
Andersen LLP, the matters required by Statement on Auditing Standards No. 61,
which include the following:

     - Arthur Andersen LLP's responsibility under generally accepted auditing
       standards

     - Significant accounting policies

     - Management's judgments and accounting estimates

     - Significant audit adjustments

     - Other information in documents containing audited financial statements

     - Disagreements with Insituform's management, including accounting
       principles, scope of audit and disclosures

     - Major issues discussed with Insituform's management prior to retention of
       Arthur Andersen LLP

     - Difficulties encountered in performing the audit

     The Audit Committee received and discussed with Arthur Andersen LLP written
disclosures and the letter regarding any significant relationships that could
impair Arthur Andersen LLP's independence (as required by Independence Standards
Board Statement No. 1), and considered the compatibility of non-audit services
with Arthur Andersen LLP's independence. Based upon the above reviews and
discussions, the Audit Committee recommended to the Board of Directors that
Insituform's December 31, 2000 audited financial statements be included in the
Annual Report on Form 10-K for the fiscal year ended December 31, 2000.

     The Board of Directors and the Audit Committee believe that the Audit
Committee's current member composition satisfies the rule of the National
Association of Securities Dealers, Inc. ("NASD") that governs

                                        10
   13

audit committee composition, including the requirement that all audit committee
members are "independent" directors, as that term is defined by NASD Rule
4200(a)(14). In 2000, the Audit Committee and the Board of Directors approved
and adopted an Audit Committee Charter which is attached to this proxy statement
as Appendix A.
                                          Paul A. Biddelman, Chair
                                          Juanita H. Hinshaw
                                          Sheldon Weinig

  Audit Fees

     The aggregate fees billed by Arthur Andersen LLP for the 2000 fiscal year
audit and for the reviews of the financial statements included in Insituform's
quarterly reports on Form 10-Q were $315,600.

  Financial Information Systems Design and Implementation Fees

     Arthur Andersen LLP did not render any services related to financial
information systems design and implementation for the fiscal year ended December
31, 2000.

  All Other Fees

     Aggregate fees billed for all other services rendered by Arthur Andersen
LLP for the fiscal year ended December 31, 2000 were $541,428.

                     RELATIONSHIP WITH INDEPENDENT AUDITORS

     The Board of Directors, based on the recommendation of the Audit Committee,
has selected Arthur Andersen LLP, independent certified public accountants, as
Insituform's auditors for the fiscal year ending December 31, 2001. Arthur
Andersen LLP has audited Insituform's consolidated financial statements for the
fiscal year ended December 31, 2000.

     One or more representatives of Arthur Andersen LLP will attend the annual
meeting, will have an opportunity to make a statement and will be available to
respond to appropriate questions from stockholders.

                               PERFORMANCE GRAPH

     The following performance graph compares the total stockholder return on
Insituform's common stock to the S&P 500 Index and a composite peer group index
(the "Current Composite Peer Group Index") for the past five years. The Current
Composite Peer Group Index is comprised of the following six companies:
Insituform East Incorporated ("East"), Michael Baker Corporation ("Michael
Baker"), Granite Construction, Inc. ("Granite"), Fluor Corp. ("Fluor"), Jacobs
Engineering Group, Inc. ("Jacobs") and Foster Wheeler Corp. ("Foster Wheeler").

     The Current Composite Peer Group Index differs from the composite peer
group index used in last year's proxy statement (the "Prior Composite Peer Group
Index"), which was comprised of three of the companies included in the Current
Composite Peer Group Index, namely, East, Michael Baker and Granite, in addition
to Utilx Corporation ("Utilx"), BFC Construction Corporation ("BFC"), MYR Group,
Inc. ("MYR") and J. Ray McDermott, S.A. ("McDermott"). Insituform has changed
its composite peer group index this year because Utilx, BFC, MYR and McDermott
are no longer publicly traded companies. The performance graph below also shows
the five-year performance of East, Michael Baker and Granite, which are the
companies from the Prior Composite Peer Group Index which continue to be
publicly traded.

                                        11
   14

     The graph assumes that $100 was invested in Insituform's common stock and
each Index on December 31, 1995 and that all dividends were reinvested.

                   COMPARISON OF FIVE-YEAR CUMULATIVE RETURN

                            [PERFORMANCE LINE GRAPH]



              -----------------------------------------------------------------------------------------------
                                                    1995      1996      1997      1998      1999      2000
              -----------------------------------------------------------------------------------------------
                                                                                  
               Insituform Technologies, Inc.       100.00     63.44     66.67    124.73    243.01    343.01
               S&P 500 Index                       100.00    122.96    163.99    210.86    255.22    231.99
               Current Composite Peer Group Index  100.00     91.06     82.76     96.59     66.81     92.68
               Prior Composite Peer Group Index    100.00    116.89    193.34    170.60    165.90    257.13


     Notwithstanding anything set forth in any of Insituform's previous filings
under the Securities Act of 1933 or the Securities Exchange Act 1934 which might
incorporate future filings, including this proxy statement, in whole or in part,
the preceding performance graph shall not be deemed incorporated by reference
into any such filings.

                  INFORMATION CONCERNING CERTAIN STOCKHOLDERS

     The following table sets forth certain information as of March 15, 2001
with respect to the number of shares of common stock owned by (i) each person
known by Insituform to own beneficially more than 5% of the outstanding shares
of Common Stock, (ii) each director of the Company who owned beneficially any
shares of Common Stock, (iii) each executive officer of the Company named in the
Summary Compensation

                                        12
   15

Table under "Executive Compensation," and (iv) all directors and executive
officers of the Company as a group:



                                                                NUMBER OF SHARES
                                                                 OF COMMON STOCK           PERCENT
BENEFICIAL OWNER                                              BENEFICIALLY OWNED(1)        OF CLASS
- ----------------                                              ---------------------        --------
                                                                                     
T. Rowe Price Associates, Inc.
  100 East Pratt Street
  Baltimore, Maryland 21202.................................        3,126,500(2)            11.65
Kalmar Investments Inc.
  3701 Kennett Pike
  Greenville, Delaware 19807................................        1,624,873(3)             6.06
Putnam Investments, LLC
  One Post Office Square
  Boston, Massachusetts 02109...............................        1,525,166(4)             5.68
Richard L. Kinsel, Jr.
  8121 Broadway, Suite 300
  Houston, Texas 77061......................................        1,460,238(5)             5.44
Robert W. Affholder.........................................        1,155,406(6)             4.31
Paul A. Biddelman...........................................           25,500(7)                 (8)
Stephen P. Cortinovis.......................................           36,500(9)                 (8)
Juanita H. Hinshaw..........................................            7,500(10)                (8)
Anthony W. Hooper...........................................          366,259(11)            1.33
Thomas N. Kalishman.........................................          152,289(12)                (8)
Sheldon Weinig..............................................           34,600(13)                (8)
Alfred L. Woods.............................................           37,000(14)                (8)
Joseph A. White.............................................           21,200(15)                (8)
Carroll W. Slusher..........................................           34,450(16)                (8)
Antoine Menard..............................................           21,550(17)                (8)
Thomas A. A. Cook...........................................            3,750(18)                (8)
Robert L. Kelley............................................            7,781(19)                (8)
Directors and Executive Officers as a group (13 persons)....        1,903,785(20)            7.10


- ---------------
 (1) Except as otherwise indicated, as of March 15, 2001, all shares are owned
     with sole voting and investment power.

 (2) Represents securities as to which T. Rowe Price Associates, Inc. ("T. Rowe
     Price") serves as investment advisor beneficially owned by various
     individual and institutional investors, including 1,550,000 shares
     beneficially owned by T. Rowe Price Small-Cap Value Fund, Inc. (the
     "Fund"), a registered investment company. The information provided herein
     is based on an Amendment No. 1 to Schedule 13G filed with the Securities
     and Exchange Commission on February 7, 2001. The information in the
     Schedule 13G/A indicated that T. Rowe Price has sole investment power over
     all such shares, and that T. Rowe Price and the Fund have sole voting power
     over, respectively, 648,800 shares and 1,550,000 shares. T. Rowe Price
     disclaims beneficial ownership of all such securities.

 (3) The information provided herein is based on a Schedule 13G filed with the
     Securities and Exchange Commission on January 31, 2000. The information in
     the Schedule 13G indicates that Kalmar Investments Inc., a registered
     investment advisor, has sole investment power with respect to such shares.

 (4) The information provided herein is based on a Schedule 13G filed with the
     Securities and Exchange Commission on March 27, 2001. The information in
     the Schedule 13G indicates that Putnam Investments, LLC, an investment
     adviser, beneficially owns 1,525,166 shares, of which it has shared voting
     power with respect to 265,600 shares and shared dispositive power with
     respect to 1,525,166 shares. The information in the Schedule 13G indicates
     that Putnam Investment Management, LLC, an investment adviser, beneficially
     owns and has shared dispositive power over 1,142,266 of these shares.

                                        13
   16

     The information in the Schedule 13G indicates that the Putnam Advisory
     Company, LLC, an investment adviser, beneficially owns 382,900 of these
     shares, of which it has shared voting power with respect to 265,600 shares
     and shared dispositive power with respect to 382,900 shares.

 (5) The information provided herein is based on a Schedule 13G filed with the
     Securities and Exchange Commission on March 23, 2001. The information in
     the Schedule 13G indicates that Mr. Kinsel has sole investment power with
     respect to such shares.

 (6) Represents: (i) 520,906 shares held individually by Robert W. Affholder;
     (ii) 74,165 shares held jointly by Robert W. Affholder and Pamela Long
     Affholder; (iii) 600,000 shares held by The Affholder Family Partnership
     L.P., the sole general partners of which are The Robert W. Affholder
     Revocable Trust and The Pamela Long Affholder Revocable Trust (as to each
     of which Robert W. Affholder and Pamela Long Affholder are co-trustees);
     (iv) 3,000 shares held by The Robert W. and Pamela Long Affholder
     Irrevocable Grandchildren's Trust (as to which Robert W. Affholder is
     co-trustee); and (v) 31,500 shares issuable to Robert W. Affholder upon
     exercise of stock options granted by Insituform and exercisable within 60
     days of March 15, 2001.

 (7) Represents 25,500 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

 (8) Less than one percent.

 (9) Represents 36,500 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(10) Represents 7,500 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(11) Includes 311,500 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(12) Includes (i) 115,000 shares held by The Jerome and Nancy F. Kalishman
     Irrevocable Grandchildren's Trust, as to which Mr. Kalishman acts as
     co-trustee with shared voting and investment power; (ii) 2,789 shares held
     by the Nancy F. Kalishman Charitable Remainder Unitrust, as to which Mr.
     Kalishman acts as co-trustee with shared voting and investment power; and
     (iii) 34,500 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(13) Includes 31,500 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(14) Includes 36,500 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(15) Includes 16,200 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(16) Includes 2,500 shares held jointly by Mr. Slusher with his spouse and
     31,950 shares issuable upon exercise of stock options granted by Insituform
     and exercisable within 60 days of March 15, 2001.

(17) Represents 21,550 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

(18) Includes 3,750 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001. Mr. Cook
     became an executive officer in September 2000.

(19) Includes 7,750 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001. Mr. Kelley
     resigned as an executive officer in September 2000.

(20) Includes 596,200 shares issuable upon exercise of stock options granted by
     Insituform and exercisable within 60 days of March 15, 2001.

            SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

     Based solely upon a review of copies of reports received by it pursuant to
Section 16(a) of the Securities Exchange Act of 1934, Insituform believes that
during 2000 all filing requirements applicable to its directors,

                                        14
   17

officers and 10% holders under Section 16(a) were satisfied, with the exception
of Mr. Slusher. Mr. Slusher filed one late report which contained information
relating to one transaction.

                                  PROPOSAL 2:

              ADOPTION OF THE 2001 EMPLOYEE EQUITY INCENTIVE PLAN

     The Board of Directors has adopted, subject to approval by Insituform's
stockholders, the 2001 Employee Equity Incentive Plan (the "Employee Incentive
Plan"). If the Employee Incentive Plan is approved by the stockholders, the
Board of Directors intends to terminate the 1992 Employee Stock Option Plan,
which would otherwise expire on March 31, 2002.

     The Employee Incentive Plan provides for the granting of stock options and
other stock-based awards. The Board of Directors believes that the Employee
Incentive Plan advances the interests of Insituform and its stockholders by
encouraging key employees of Insituform and its subsidiaries to acquire common
stock or to receive monetary payments based on the value of common stock upon
the achievement of certain goals that are mutually advantageous to the employees
and the stockholders of Insituform and thus provide an incentive for employees
to contribute to Insituform's success.

     The maximum number of shares of common stock which currently may be issued
under the Employee Incentive Plan is 1,000,000, subject to adjustment in the
event of any change in the number of issued shares of such stock without new
consideration to Insituform, such as by reason of a stock dividend, stock split,
reorganization, sale, merger, consolidation, issuance of stock rights or
warrants, or similar occurrence.

     The Employee Incentive Plan will be administered by the Compensation
Committee of the Board of Directors (the "Administrator"). The Administrator, by
majority action thereof, is authorized in its sole discretion to select the
persons eligible to participate in the Employee Incentive Plan, to grant
benefits in accordance with the Employee Incentive Plan and to establish the
terms and conditions of such grants, as well as to interpret and administer the
Employee Incentive Plan, to establish appropriate rules relating to the Employee
Incentive Plan, to delegate some or all of its authority under the Employee
Incentive Plan and to take all such steps and make all such determinations in
connection with the Employee Incentive Plan and the benefits granted thereunder
as it may deem necessary or advisable.

     The following summary of the Employee Incentive Plan is subject to the
provisions contained in the complete text of the Employee Incentive Plan.

DESCRIPTION OF PLAN

     Under the terms of the Employee Incentive Plan, key employees of Insituform
and its subsidiaries as determined in the sole discretion of the Administrator
will be eligible to receive (a) stock appreciation rights ("SARs"), (b)
restricted shares of common stock ("Restricted Stock"), (c) performance awards
("Performance Awards"), (d) stock options ("Stock Options") exercisable into
shares of common stock which may or may not qualify as incentive stock options
within the meaning of Section 422 of the Internal Revenue Code of 1986 (the
"Code") (options so qualifying are hereinafter referred to as "Incentive Stock
Options") and (e) stock units ("Stock Units").

     Stock Appreciation Rights.  The Administrator may grant SARs giving the
holder thereof a right to receive, at the time of surrender, a payment equal to
the difference between the fair market value of such stock on the date of
surrender of the SAR and the exercise price of the SAR established by the
Administrator at the time of grant, subject to any limitation imposed by the
Administrator in its sole discretion. In the Administrator's discretion, the
value of a SAR may be paid in cash or common stock, or a combination thereof. A
SAR may be exercised (a) in conjunction with the exercise of a Stock Option, (b)
upon lapse of a Stock Option or (c) independent of the exercise of a Stock
Option. At the time of grant, the Administrator may establish a maximum amount
per share which will be payable upon exercise of a SAR, and may impose
conditions on the exercise of a SAR. The term of any SAR shall be established by
the Administrator, but in no event shall a SAR be exercisable after ten years
from the date of grant.

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   18

     Restricted Stock.  The Administrator may issue shares of common stock
either as a stock bonus or at a purchase price of less than fair market value,
subject to the restrictions or conditions specified by the Administrator at the
time of grant. The purchase price and the period of restriction shall be
determined by the Administrator at the time of grant. During the period of
restriction, holders of Restricted Stock shall be entitled to receive all
dividends and other distributions made in respect of such stock and to vote such
stock without limitation.

     Performance Awards.  The Administrator may grant Performance Awards
consisting of shares of common stock, monetary units payable in cash or a
combination thereof. These grants would result in the issuance, without payment
therefor, of common stock or the payment of cash upon the achievement of certain
pre-established performance criteria (such as return on average total capital
employed, earnings per share or increases in share price) during a specified
performance period not to exceed five years. The participating employee will
have no right to receive dividends on or to vote any shares subject to
Performance Awards until the award is actually earned and the shares are issued.

     Stock Options.  Stock Options granted under the Employee Incentive Plan
shall entitle the holder to purchase common stock at a purchase price
established by the Administrator, which price shall not be less than the fair
market value of common stock on the date of grant in the case of Incentive Stock
Options and at any price determined by the Administrator in the case of all
other options. The Administrator shall determine the terms of such Stock Options
and the times at, and conditions under which, such Stock Options will become
exercisable.

     There is no minimum number of shares for which a Stock Option may be
granted. The maximum number of shares subject to a Stock Option that may be
awarded in any calendar year to any individual shall not exceed 250,000 shares
(subject to adjustment); however, for any employee, the aggregate fair market
value of common stock subject to qualifying Incentive Stock Options that are
exercisable for the first time in any calendar year may not exceed $100,000.

     Stock Units.  The Administrator may issue Stock Units representing the
right to receive shares of common stock at a designated time in the future,
subject to the terms and conditions as established by the Administrator in its
sole discretion. A holder of Stock Units generally does not have the rights of a
stockholder until receipt of the common stock, but, in the Administrator's sole
discretion, may receive payments in cash or adjustments in the number of Stock
Units equivalent to the dividends the holder would have received if the holder
had been the owner of shares of common stock instead of Stock Units.

     No benefit shall be granted more than ten years after the date of the
adoption of the Employee Incentive Plan.

     The Board may terminate the Employee Incentive Plan at any time and from
time to time and may amend or modify the Employee Incentive Plan; provided,
however, that no such action of the Board may, without the approval of
Insituform's stockholders: (a) increase the total amount of common stock or the
amount or type of benefit that may be issued under the Employee Incentive Plan;
(b) change the selection or eligibility requirements under the Employee
Incentive Plan; or (c) reduce the amount of any existing benefit or change the
terms or conditions thereof without the participating employee's consent.

NEW PLAN BENEFITS

     There are approximately 325 employees who are eligible to participate in
the Employee Incentive Plan. The granting of awards pursuant to the Employee
Incentive Plan will be subject to the discretion of the Administrator. The
actual amount of any award that may be made in the future is not determinable
nor are the amounts that participants would have received for 2000 if the plan
had been in effect for that year. As of the date of this proxy statement, there
has been no action taken with respect to the granting of awards under the
Employee Incentive Plan.

                                        16
   19

FEDERAL INCOME TAX CONSEQUENCES

     No income will be realized by a participating employee on the grant of an
Incentive Stock Option or a Stock Option which is not an incentive stock option
("non-qualified option"), the grant of a SAR, the award of Restricted Stock or
the award of Stock Units, and Insituform will not be entitled to a deduction at
such time. If a holder exercises an Incentive Stock Option and does not dispose
of the shares acquired within two years from the date of the grant, or within
one year from the date of exercise of the Stock Option, no ordinary income will
be realized by the holder at the time of exercise. Insituform will not be
entitled to a deduction by reason of the exercise. If a holder disposes of the
shares acquired pursuant to an Incentive Stock Option within two years from the
date of grant of the Stock Option or within one year from the date of exercise
of the Stock Option, the holder will realize ordinary income at the time of
disposition equal the excess, if any, of the lesser of (a) the amount realized
on the disposition or (b) the fair market value of the shares on the date of
exercise, over the holder's basis in the shares. Insituform generally will be
entitled to a deduction in an amount equal to such income in the year of the
disqualifying disposition.

     Upon the exercise of a non-qualified Stock Option or the surrender of a
SAR, the excess, if any, of the fair market value of the stock on the date of
exercise over the purchase price or base price, as the case may be, is ordinary
income to the holder as of the date of exercise. Insituform generally will be
entitled to a deduction equal to such excess amount in the year of exercise.

     Subject to a voluntary election by the holder under Section 83(b) of the
Code, a holder will realize income as a result of the award of Restricted Stock
at the time the restrictions expire on such shares. An election pursuant to
Section 83(b) of the Code would cause the holder to realize income in the year
in which such award was granted. The amount of income realized will be the
difference between the fair market value of the shares on the date such
restrictions expire (or on the date of issuance of the shares, in the event of a
Section 83(b) election) over the purchase price, if any, of such shares.
Insituform generally will be entitled to a deduction equal to the income
realized in the year in which the holder is required to report such income.

     An employee will realize income as a result of a Performance Award at the
time the award is paid or made available. The amount of income realized by the
participant will be equal to the fair market value of the shares on the date of
issuance, in the case of a stock award, and to the amount of the cash paid, in
the event of a cash award. Insituform will be entitled to a corresponding
deduction equal to the income realized in the year of such issuance or payment.

     An Employee will realize income as a result of an award of Stock Units at
the time shares of common stock are issued in an amount equal to the fair market
value of such shares at that time. Insituform will be entitled to a
corresponding deduction equal to the income realized in the year of such
issuance.

     The Board of Directors recommends a vote "FOR" the adoption of the Employee
Incentive Plan.

                                  PROPOSAL 3:

        ADOPTION OF THE 2001 NON-EMPLOYEE DIRECTOR EQUITY INCENTIVE PLAN

     The Board of Directors has adopted, subject to the approval of Insituform's
stockholders, the 2001 Non-Employee Director Equity Incentive Plan (the
"Non-Employee Director Incentive Plan"). If the Non-Employee Director Incentive
Plan is approved by the stockholders, the Board of Directors intends to
terminate the 1992 Non-Employee Director Stock Option Plan, which would
otherwise expire on March 31, 2002.

     The Non-Employee Director Incentive Plan provides for the granting of stock
options to non-employee directors. Under the terms of the Non-Employee Director
Incentive Plan, which will be administered by the full Board of Directors of
Insituform, directors of Insituform who are not employees of Insituform or any
affiliate of Insituform during a calendar year will be able to participate in
the Non-Employee Director Incentive Plan with respect to such calendar year. The
purpose of the Non-Employee Director Incentive Plan is to increase the ownership
interest in Insituform of non-employee directors whose services are considered
essential to Insituform's continued progress and, thus, provide further
incentive and compensation to serve as a director of Insituform.
                                        17
   20

     The Non-Employee Director Incentive Plan shall become effective immediately
following approval by Insituform's stockholders at the 2001 Annual Meeting of
Stockholders. The period during which stock options shall be granted under the
Non-Employee Director Incentive Plan shall terminate on May 10, 2011 unless the
Non-Employee Director Incentive Plan is extended or terminated at an earlier
date by the stockholders, provided, that (i) such termination shall not affect
the terms of any then outstanding stock options and (ii) the terms and
conditions applicable to any stock option granted during such period may
thereafter be amended or modified by mutual agreement between Insituform and the
option holder. The Board may suspend or terminate the Non-Employee Director
Incentive Plan at any time and for any reason.

     The total number of shares of common stock available for issuance under the
Non-Employee Director Incentive Plan is 200,000, subject to adjustment in the
event of any change in the number of issued shares of common stock without new
consideration to Insituform, such as by reason of a stock dividend, stock split,
reorganization, sale, merger, consolidation, issuance of stock rights or
warrants or similar occurrence.

     The following summary of the Non-Employee Director Incentive Plan is
subject to the provisions contained in the complete text of the Non-Employee
Director Incentive Plan.

DESCRIPTION OF THE NON-EMPLOYEE DIRECTOR INCENTIVE PLAN

     Under the terms of the Non-Employee Director Incentive Plan, each
non-employee director of Insituform shall receive a stock option to purchase
shares of common stock each year on the date of the Annual Meeting of
Stockholders (or promptly thereafter, as determined by the Board), provided,
that such director continues to be a non-employee director following such Annual
Meeting. Such option shall have a value equal to the Equity Percentage (as
defined below) of the overall, base annual compensation level (excluding
periodic meeting fees and expense reimbursements) payable to non-employee
directors at the time of the grant. From time to time and in its discretion, the
Board may (i) establish a percentage of the annual compensation level payable to
non-employee directors to be paid in option grants to all non-employee
directors, (ii) allow individual non-employee directors to elect to receive a
percentage of their respective annual compensation level in options or (iii)
establish a formula that is a combination of the foregoing (the "Equity
Percentage").

     In addition to the annual stock option grants, each non-employee director
also shall receive a stock option to purchase shares of common stock on the date
such director is first elected or appointed to the Board of Directors (or
promptly thereafter, as determined by the Board). Such option shall have a value
equal to (i) a percentage determined by the Board of Directors of the annual
compensation level payable to non-employee directors plus (ii) the Equity
Percentage of the annual compensation level for such director prorated for the
then current annual period. The Board of Directors may increase the number of
shares subject to any such initial option grant in its sole discretion.

     The purchase price per share of common stock for which each option shall be
exercisable shall be the fair market value per share of common stock on the date
the option is granted. Options may be exercised only upon payment to Insituform
of the full purchase price of the shares to be delivered. Such payment shall be
made in cash or, if provided in the option agreement relating thereto, in common
stock beneficially owned by the holder for at least six months before the date
of exercise, or in a combination of cash and common stock. The sum of the cash
and the fair market value of such common stock shall be at least equal to the
aggregate purchase price of the shares to be delivered.

     Each option granted under the Non-Employee Director Incentive Plan shall be
fully vested and exercisable immediately, and shall expire not later than ten
(10) years from the date of the grant. In the event that an option holder ceases
to be a member of the Board of Directors, such option holder may exercise
options granted under the Non-Employee Director Incentive Plan for a period of
thirty days following such termination of service, but in no event after the
expiration date of the term of the option. In the event of the death of an
option holder while serving on the Board of Directors, each of the then
outstanding options of such holder will immediately become exercisable in full
by the holder's legal representative at any time within a period of one (1) year
after death, but in no event after the expiration date of the term of the
option.

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   21

     All options granted under the Non-Employee Director Incentive Plan shall be
non-statutory options not intended to qualify under Section 422 of the Internal
Revenue Code of 1986, as amended.

     Subject to the provisions of the Non-Employee Director Incentive Plan, the
Board shall be authorized to interpret and administer the Non-Employee Director
Incentive Plan, to establish, amend and rescind any rules and regulations
relating to the Non-Employee Director Incentive Plan and to make all other
determinations necessary or advisable for the administration of the Non-Employee
Director Incentive Plan. The Board also shall be authorized to revise or amend
the Non-Employee Director Incentive Plan in any respect, provided, that, without
approval of the stockholders, no revision or amendment shall change the
selection or eligibility requirements under the Non-Employee Director Incentive
Plan, increase the number of shares of common stock that may be issued under the
Non-Employee Director Incentive Plan or increase the benefits that may be
granted under the Non-Employee Director Incentive Plan.

NEW PLAN BENEFITS

     There are currently 5 non-employee directors who are eligible to
participate in the Non-Employee Director Incentive Plan. The granting of options
to non-employee directors pursuant to the Non-Employee Director Incentive Plan
shall be subject to the discretion of the Board of Directors. The actual amount
of any award that may be made in the future is not determinable nor are the
amounts that participants would have received for 2000 if the Non-Employee
Director Incentive Plan had been in effect for that year. As of the date of this
proxy statement, there has been no action taken by the Board of Directors with
respect to the award of stock options under the Non-Employee Director Incentive
Plan.

FEDERAL INCOME TAX CONSEQUENCES

     No income will be realized by a participating non-employee director on the
grant of a stock option, and Insituform will not be entitled to a deduction at
such time. Upon the exercise of a stock option, the excess, if any, of the fair
market value of the stock on the date of exercise over the purchase price is
ordinary income to the holder as of the date of exercise. Insituform generally
will be entitled to a deduction equal to such excess amount in the year of
exercise.

     The Board of Directors recommends a vote "FOR" the adoption of the
Non-Employee Director Incentive Plan.

                                  PROPOSAL 4:

                    ADOPTION OF THE LONG-TERM INCENTIVE PLAN

     The Board of Directors has adopted, subject to the approval of Insituform's
stockholders, the Long-Term Incentive Plan. The purpose of the Long-Term
Incentive Plan is to provide members of senior management of Insituform and its
affiliates with long-term incentive compensation based on the level of
achievement of financial and other performance criteria. The Long-Term Incentive
Plan is intended to focus the interests of key employees on the key measures of
Insituform's success and to reward such employees for achieving such key
measures of Insituform's success.

     The following summary of the Long-Term Incentive Plan is subject to the
provisions contained in the complete text of the Long-Term Incentive Plan.

DESCRIPTION OF THE LONG-TERM INCENTIVE PLAN

     Under the Long-Term Incentive Plan, which will be administered by the
Compensation Committee of the Board of Directors, employees of Insituform who
are or may be "covered employees," as defined by the Internal Revenue Code of
1986 (the "Code"), will be eligible to participate in the Long-Term Incentive
Plan and receive performance-based compensation in the form of cash bonuses or
by the grant of a benefit (other than a Stock Option) under the Employee
Incentive Plan. The Compensation Committee will designate the participants in
the Long-Term Incentive Plan (the "Participants") for each fiscal year or other
period as

                                        19
   22

determined by the Compensation Committee (the "Performance Period"). The
Long-Term Incentive Plan is intended to qualify compensation paid thereunder as
"qualified performance-based compensation" within the meaning of Section 162(m)
of the Code. Stockholder approval of the Long-Term Incentive Plan is necessary
for Insituform to claim federal income tax deductions in the event future
payments under the Long-Term Incentive Plan to a "covered employee" exceed
$1,000,000 for any fiscal year.

     The Compensation Committee shall establish objective performance goals in
writing not later than ninety days after the beginning of each Performance
Period. The performance goals will be established by the Compensation Committee
based upon one or more of the following criteria, individually or in
combination, adjusted in such manner as the Compensation Committee shall
determine in its sole discretion: (a) stock price; (b) sales; (c) return on
equity; (d) book value; (e) expense management; (f) earnings per share; (g) free
cash flow; (h) net income; (i) individual performance; and (j) business unit
performance. The payment of any award under the Long-Term Incentive Plan may be
reduced by the Compensation Committee in its sole discretion based upon such
factors as the Compensation Committee shall determine. The maximum aggregate
amount of compensation that may be paid to a Participant in any fiscal year of
Insituform pursuant to one or more awards under the Long-Term Incentive Plan
shall not exceed the Maximum Amount for such fiscal year. If the Maximum Amount
(including carryforwards under this sentence) for a fiscal year exceeds the
amount paid to a Participant in that year, such excess shall be carried forward
and added to the Maximum Amount for the succeeding fiscal year. For this
purpose, the Maximum Amount for a fiscal year shall be $2,000,000 for the 2001
fiscal year, and, for each succeeding fiscal year, 110% of the Maximum Amount
for the immediately preceding year (determined without regard to any
carryforward); and compensation shall be treated as paid when such compensation
would be allowable as a deduction under Chapter 1 of the Code (without regard to
Section 162(m) of the Code).

     The Long-Term Incentive Plan may be amended or terminated at any time by
the Compensation Committee in its sole and absolute discretion.

NEW PLAN BENEFITS

     There are approximately 5 employees who are eligible to participate in the
Long-Term Incentive Plan. The granting of awards pursuant to the Long-Term
Incentive Plan will be subject to the discretion of the Compensation Committee.
The actual amount of any awards that may be made in the future is not
determinable nor are the amounts that Participants would have received for 2000
if the Long-Term Incentive Plan had been in effect for that year. As of the date
of this proxy statement, there has been no action taken with respect to the
granting of awards under the Long-Term Incentive Plan.

FEDERAL INCOME TAX CONSEQUENCES

     Upon the payment of a cash bonus pursuant to the Long-Term Incentive Plan,
a Participant will realize ordinary income as of the date the bonus is payable
to the Participant and Insituform will be entitled to a deduction at that time.
Upon the grant of a benefit under the Employee Incentive Plan pursuant to the
Long-Term Incentive Plan, a Participant will realize income, and Insituform will
be entitled to a deduction, in the same manner as described under "Proposal 2.
Adoption of the 2001 Employee Equity Incentive Plan -- Federal Income Tax
Consequences."

     The Board of Directors recommends a vote "FOR" the adoption of the
Long-Term Incentive Plan.

                                 OTHER MATTERS

     The Board of Directors does not know of any other matters which may be
brought before the annual meeting. However, if any other matters are properly
presented for action, it is the intention of the persons named in the
accompanying form of proxy to vote the shares represented thereby in accordance
with their judgment on such matters.

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                             STOCKHOLDER PROPOSALS

     Insituform's By-laws provide that, in order for a stockholder to nominate a
candidate for director at a meeting of stockholders, the stockholder must have
given timely notice thereof in writing to Insituform's Secretary. In the case of
an annual meeting of stockholders, to be timely, a stockholder's notice must
ordinarily be delivered to or mailed and received at Insituform's principal
executive offices not less than 90 days (which for the 2002 annual meeting of
stockholders would be February 9, 2002) nor more than 120 days (which for the
2002 annual meeting of stockholders would be January 5, 2002) prior to the
anniversary date of the preceding year's annual meeting of stockholders.

     However, if the date of the annual meeting is advanced or delayed by more
than 30 days compared to the date of the preceding year's annual meeting, notice
by the stockholder to be timely made must be received not later than the close
of business on the later of (i) the ninetieth day prior to the meeting, or (ii)
the tenth day following the date on which the date set for the meeting is first
announced publicly. Any stockholder filing a notice of nomination must include
the information required by Insituform's By-laws, including information about
the nominee, as well as the name and address of the stockholder and the number
of shares of common stock held by the stockholder.

     In order for a stockholder to bring other business before an annual meeting
of stockholders, the stockholder must have given timely notice thereof in
writing to Insituform's Secretary within the time limits described above. Such
notice must include the information required by Insituform's By-laws, including
a description of the proposed business, the reasons therefor and any interest
the stockholder has in such business.

     If a stockholder fails to notify Insituform within the time limits
described above of an intent to be present at Insituform's 2001 annual meeting
of stockholders in order to present a proposal for a vote, Insituform will have
the right to exercise its discretionary authority to vote against the proposal,
if presented, without including any information about the proposal in its proxy
materials. The foregoing requirements are separate from and in addition to the
requirements of the Securities and Exchange Commission that a stockholder must
meet to have a proposal included in Insituform's proxy statement. Stockholder
proposals intended to be presented at the 2002 annual meeting must be received
by Insituform by December 1, 2001 in order to be considered for inclusion in
Insituform's proxy statement relating to such meeting.

                                          HOWARD KAILES
                                          Secretary

Chesterfield, Missouri
March 30, 2001

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                                                                      APPENDIX A

                   AUDIT COMMITTEE OF THE BOARD OF DIRECTORS
                        OF INSITUFORM TECHNOLOGIES, INC.

                                    CHARTER
                            (EFFECTIVE MAY 25, 2000)

I. PURPOSE

     The primary function of the Audit Committee, created by the Board of
Directors of the Company (the "Board of Directors") pursuant to resolutions duly
adopted on January 7, 1982 and reconstituted by resolutions duly adopted on
November 13, 1987, is to assist the Board of Directors in overseeing and
monitoring management in the preparation of the consolidated financial
statements of the Company, and to perform such other duties as shall be
delegated to it by the Board of Directors. In furtherance thereof, the Audit
Committee's functions shall extend to making recommendations to the Board of
Directors regarding the engaging and discharging of the Company's independent
auditors, reviewing with the independent auditors the auditing engagement,
reviewing the scope and results of the Company's procedures for internal
auditing, approving the professional services provided by the independent
auditors, and reviewing the independence of the professional auditors. The Audit
Committee will address these functions by carrying out the activities enumerated
in Section IV of this Charter, which are intended to describe a program of
guidance and oversight and not to diminish the primary responsibility of the
Company's management for the Company's financial statements and internal
controls.

II. COMPOSITION

     The Audit Committee shall be comprised of three or more directors, as
determined by the Board of Directors. The members of the Audit Committee shall
be elected by the Board of Directors at the first regular meeting of the Board
of Directors following the annual meeting of stockholders, and shall serve until
their successors shall be duly elected and qualified, subject to the By-Laws of
the Company. Unless a Chairman of the Audit Committee is elected by the full
Board of Directors, the members of the Audit Committee may designate a Chairman
thereof by majority vote of the full Audit Committee membership.

     All members of the Audit Committee shall have an understanding of the
Corporation's business and services and a working familiarity with basic finance
and accounting practices, and at least one member of the Audit Committee shall
have accounting or related financial management expertise.

     Effective June 1, 2001, or at such earlier time as shall be determined by
the Board of Directors, each member of the Audit Committee shall be an
independent director. For purposes of the foregoing, an independent director
shall mean a member of the Board of Directors other than an officer or employee
of the Company or its subsidiaries, or any other individual having a
relationship which, in the opinion of the Board of Directors, would interfere
with the exercise of independent judgment in carrying out the responsibilities
of a director. The Board of Directors shall deem not independent any person so
considered under the rules of the National Association of Securities Dealers
Inc. (the "NASD") applicable to the Company.

     Notwithstanding the foregoing, one director who is not independent as
aforesaid may be appointed to the Audit Committee, consistent with the
requirements of the NASD applicable to the Company, if the Board of Directors
under exceptional and limited circumstances determines that membership on the
Audit Committee is required by the best interests of the Company and its
stockholders. Prior to June 1, 2001, a majority of the members of the Audit
Committee shall be independent directors, as determined by the Board of
Directors consistent with the applicable NASD requirements.

III. MEETINGS

     The Audit Committee shall meet on a regular basis, and as frequently as
circumstances dictate. The Audit Committee shall maintain minutes and other
records of its meetings and other activities. In furtherance
   25

of its objective of creating an open avenue of communication among the Company's
accountants, financial and senior management, internal auditing staff and the
Board of Directors, the Audit Committee shall meet at least annually with
management and the independent accountants in executive session, to discuss any
matters that the Audit Committee or these groups believe should be discussed
privately. In addition, the Audit Committee should meet with the independent
accountants and management quarterly to review the Corporation's financial
statements consistent with Section IV hereof.

IV. RESPONSIBILITIES AND DUTIES

     To fulfill its responsibilities and duties, the Audit Committee shall:

PERIODIC REVIEW

     1. Review and update this Charter periodically, at least annually, as
conditions dictate, and submit any changes for ratification by the full Board of
Directors.

     2. Review the Corporation's annual financial statements, including any
certification, report, opinion, or review rendered by the independent
accountants, prior to filing with the Securities and Exchange Commission
together with the Company's Annual Report on Form 10-K.

     3. Review with financial management and the independent accountants the
Company's quarterly unaudited financial statements prior to filing with the
Securities and Exchange Commission together with the Company's Quarterly Report
on Form 10-Q. The Chairman of the Audit Committee may represent the entire Audit
Committee for purposes of this review.

     4. Review other financial statements contained in filings by the Company
with the Securities and Exchange Committee and other published documents.

INDEPENDENT ACCOUNTANTS

     5. Recommend to the Board of Directors the selection of the independent
accountants, considering independence and effectiveness, and approve the fees
and other compensation to be paid to the independent accountants.

     6. On an annual basis, review and discuss with the accountants all
significant relationships the accountants have with the Company, to determine
independence and objectivity; and be responsible for ensuring receipt from the
accountants of a formal written statement delineating all relationships between
the accountants and the Company, consistent with Independence Standards Board
Standard 1.

     7. Take steps to ensure the independent accountant's ultimate
accountability to the Board of Directors and the Audit Committee, as
representatives of the stockholders, and the ultimate authority of the Board of
Directors and the Audit Committee, as such representatives, to select, evaluate
and, where applicable, replace the independent accountants.

     8. Consult with the independent accountants, out of the presence of
management, concerning internal controls, and the fullness and accuracy of the
Company's financial statements.

FINANCIAL REPORTING PROCESSES

     9. In consultation with the independent accountants and the internal
auditors, review the integrity of the Company's financial reporting processes,
both internal and external.

     10. Consider the independent accountants' judgments about the quality and
appropriateness of the Company's accounting principles, as applied in its
financial reporting.

     11. Consider and approve, if appropriate, any major changes to the
Company's auditing and accounting principles and practices as suggested by the
independent accountants, management, or the internal auditing staff.

                                       A-2
   26

PROCESS IMPROVEMENT

     12. Establish regular and separate systems of reporting to the Audit
Committee by each of management, the independent accountants and the internal
auditing staff regarding any significant judgments made in management's
preparation of the financial statements and the view of each as to
appropriateness of such judgments.

     13. Inquire of the independent accountants, the internal auditing staff and
management about assessing risk of fraudulent financial reporting and assess the
steps management has taken to minimize such risks to the Company.

     14. Following completion of the annual audit, review separately with each
of management, the independent accountants and the internal auditing staff any
significant difficulties encountered during the course of the audit, including
any restrictions on the scope of work or access to required information.

     15. Review any significant disagreement among management and the
independent accountants or the internal auditing staff in connection with the
preparation of the financial statements.

     16. Review with the independent accountants, the internal auditing staff
and management the extent to which changes or improvements in financial or
accounting practices, as approved by the Audit Committee, have been implemented.

LEGAL AND ETHICAL COMPLIANCE

     17. Consult with management to ensure that appropriate ethical standards
for business conduct are communicated to employees generally, and review
compliance with such standards.

     18. Review activities, organizational structure, and qualifications of the
internal audit staff.

     19. Review, with the Company's general counsel and, when appropriate,
outside counsel, legal compliance matters, and any legal matter that could have
a significant impact on the Company's financial statements.

     20. Conduct or authorize investigations into any other matters within its
scope of responsibilities, and retain independent counsel, accountants, or
others to assist in the conduct of any investigation.

     21. Perform any other activities consistent with this Charter, the
Corporation's By-laws, the enabling resolutions for the Audit Committee adopted
by the Board of Directors, and governing law, as the Audit Committee or the
Board of Directors deems necessary or appropriate.

                                       A-3
   27
                            - FOLD AND DETACH HERE -
- --------------------------------------------------------------------------------

                          INSITUFORM TECHNOLOGIES, INC.

                              CLASS A COMMON SHARES

           THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned hereby (1) acknowledges receipt of the notice of the Annual
Meeting of Stockholders of Insituform Technologies, Inc. ("Insituform") to be
held at the Doubletree Hotel, 16625 Swingley Ridge Road, Chesterfield, Missouri
on Thursday, May 10, 2001 at 9:00 a.m., local time, and the proxy statement in
connection therewith and (2) appoints Anthony W. Hooper, Thomas A. A. Cook and
Joseph A. White, and each of them, the undersigned's proxies with full power of
substitution, for and in the name, place and stead of the undersigned, to vote
and act with respect to all of the shares of Insituform's Class A common shares,
$.01 par value (the "Common Stock"), standing in the name of the undersigned or
with respect to which the undersigned is entitled to vote and act, at the
meeting and at any adjournment or adjournments thereof, and the undersigned
directs that this proxy be voted as specified on the reverse side.

If more than one of the proxies named above shall be present in person or by
substitute at the meeting or any adjournment or adjournments thereof, all of the
proxies so present and voting, either in person or by substitute, shall exercise
all of the proxies hereby given.

The undersigned hereby revokes any proxy or proxies heretofore given to vote
upon or act with respect to such stock and hereby ratifies and confirms all that
the proxies so present and voting, their substitutes or any of them, may
lawfully do by virtue hereof.

                  (CONTINUED AND TO BE SIGNED ON REVERSE SIDE)


                         Please date, sign and mail your
                      proxy card back as soon as possible!

                         Annual Meeting of Stockholders
                         INSITUFORM TECHNOLOGIES, INC.

                                  MAY 10, 2001

/X/   PLEASE MARK YOUR VOTES AS IN THIS EXAMPLE



                                               FOR                WITHHOLD AUTHORITY          NOMINEES:
                                      all nominees listed at        to vote for all
                                     right (except as marked       nominees listed
                                      to the contrary below)          at right
                                                                                
(1) Election of Directors                     / /                       / /              Robert W. Affholder
                                                                                         Paul A. Biddelman
                                                                                         Stephen P. Cortinovis
                                                                                         Juanita H. Hinshaw
                                                                                         Anthony W. Hooper
                                                                                         Thomas N. Kalishman
                                                                                         Sheldon Weinig
                                                                                         Alfred L. Woods

   28
(Instructions: To withhold authority to vote for any individual nominee as a
director, write that nominee's name in the space provided below)

- ---------------------------------------------------------------



                                                FOR        AGAINST     ABSTAIN
(2)   Approval of the adoption of the 2001      / /          / /         / /
      Employee Equity Incentive Plan

                                                FOR        AGAINST     ABSTAIN
(3)   Approval of the adoption of the 2001      / /          / /         / /
      Non-Employee Director Equity
      Incentive Plan

                                                FOR        AGAINST     ABSTAIN
(4)   Approval of the adoption of the           / /          / /         / /
      Long-Term Incentive Plan


(5)   In the discretion of the proxies on any matter that may properly come
      before the meeting or any adjournment or adjournments thereof.

THIS PROXY WILL BE VOTED AS SPECIFIED.  IF NO SPECIFICATION IS MADE, THIS
PROXY WILL BE VOTED FOR THE MATTERS SPECIFICALLY REFERRED TO HEREON.

PLEASE DATE, SIGN AND MAIL THIS PROXY CARD IN THE ENCLOSED ENVELOPE. NO
POSTAGE IS REQUIRED.

SIGNATURE:  _____________________________________     DATED:  __________________
            (and TITLE, if applicable)


SIGNATURE:  _____________________________________     DATED:  __________________
(if held jointly) (and TITLE, if applicable)

Please date this proxy and sign your name exactly as it appears herein. Where
there is more than one owner, each should sign. When signing as an attorney,
administrator, executor, guardian or trustee, please add your title as such. If
executed by a corporation, the proxy should be signed by a duly authorized
officer.



   29


                          INSITUFORM TECHNOLOGIES, INC.

                       2001 EMPLOYEE EQUITY INCENTIVE PLAN


      1. PURPOSE AND NATURE OF PLAN. The purpose of this 2001 Employee Equity
Incentive Plan (the "PLAN") of Insituform Technologies, Inc. (the "COMPANY") is
to encourage key employees of the Company (together with such subsidiaries of
the Company as the Administrator may designate) to acquire shares of the
Company's Class A common shares, $0.01 par value (the "COMMON STOCK"), or to
receive monetary payments based on the value of Common Stock or based upon
achieving certain goals on a basis mutually advantageous to such key employees
and the Company and, thus, provide an incentive for key employees to contribute
to the success of the Company and align the interests of key employees with the
interests of the stockholders of the Company.

      2. ADMINISTRATION; INTERPRETATION. The Plan shall be administered by the
Compensation Committee of the Board of Directors (the "ADMINISTRATOR"), unless
otherwise specified by the Board of Directors. The Board of Directors in its
discretion may delegate and assign specified duties and authority of the
Administrator to any other committee and retain the other duties and authority
of the Administrator to itself. Also, the Board of Directors in its discretion
may appoint a separate committee of outside directors to make awards that
satisfy the requirements of Section 162(m) of the Internal Revenue Code.

      Subject to the provisions of the Plan, the Administrator shall have
exclusive authority to interpret and administer the Plan, to establish, amend
and rescind rules and regulations relating to the Plan, to delegate some or all
of its authority under the Plan and to take all steps and make all
determinations necessary or advisable in connection with the Plan and the
benefits granted pursuant to the Plan. The determination of the Administrator in
the administration of the Plan shall be conclusive and binding upon all persons,
including without limitation the Company, its stockholders and persons granted
benefits under the Plan.

      To the extent that any benefits which may be granted within the terms of
the Plan would qualify under present or future laws for tax treatment that is
beneficial to a participant, then any such beneficial treatment shall be
considered within the intent, purpose and operational purview of the Plan and
the discretion of the Administrator, and to the extent that any such benefits
would so qualify within the terms of the Plan, the Administrator shall have full
and complete authority to grant benefits that so qualify (including the
authority to grant, simultaneously or otherwise, benefits which do not so
qualify) and to prescribe the terms and conditions (which need not be identical
as among participants) in respect to the grant or exercise of any benefits under
the Plan.

      The Administrator may, in its sole discretion, select persons eligible to
participate in the Plan, grant benefits in accordance with the Plan, and
establish the timing, pricing, amount and other terms and conditions of such
grants (which need not be uniform with respect to the various participants or
with respect to different grants to the same participant); provided,
notwithstanding anything contained herein to the contrary, the maximum number of
shares subject to stock options that may be awarded in any calendar year to any
individual shall not exceed 250,000 shares (as adjusted in accordance with
Section 6).

      3. PARTICIPANTS. Participants will consist of such officers and key
employees of the Company (or any designated subsidiary of the Company) as the
Administrator in its sole discretion shall determine. Designation of a
participant in any year shall not require the Administrator to designate such
person to receive a benefit in any other year or to receive the same type or
amount of benefit as granted to



   30
the participant in any other year or as granted to any other participant in any
year. The Administrator shall consider such factors as it deems pertinent in
selecting participants and in determining the type and amount of their
respective benefits.

      4. SHARES SUBJECT TO THE PLAN. Subject to the provisions of Section 6
(relating to adjustment for changes in capital stock) an aggregate of one
million (1,000,000) shares of Common Stock shall be available for issuance under
the Plan. The shares of Common Stock issued under the Plan may be made available
from authorized but unissued shares or shares re-acquired by the Company,
including shares purchased in the open market or in private transactions.

      The term "PLAN MAXIMUM" shall refer to the number of shares of Common
Stock that are available for grant of awards pursuant to the Plan. Stock
underlying outstanding options, SARs (as defined below) or Performance Awards
(as defined below) will reduce the Plan Maximum while such options, SARs or
Performance Awards are outstanding. Shares underlying expired, canceled or
forfeited options, SARs or Performance Awards shall be added back to the Plan
Maximum. If the exercise price of stock options is paid by delivery of shares of
Mature Stock (as hereinafter defined), the Plan Maximum shall be reduced by the
net (rather than the gross) number of shares of Common Stock issued pursuant to
such exercise, regardless of the number of shares of Common Stock surrendered or
withheld in payment. If a SAR is exercised for cash or a Performance Award is
paid in cash, the Plan Maximum shall be increased by the number of shares of
Common Stock with respect to which such payment is applicable. Restricted Stock
(as defined below) issued pursuant to the Plan will reduce the Plan Maximum
while outstanding even while subject to restrictions. Shares of Restricted Stock
shall be added back to the Plan Maximum if such Restricted Stock is forfeited or
is returned to the Company as part of a restructuring of benefits granted
pursuant to the Plan.

      5. TYPES OF BENEFITS. The following benefits may be granted under the
Plan: (i) stock appreciation rights ("SARS"); (ii) restricted stock ("RESTRICTED
STOCK"); (iii) performance awards ("PERFORMANCE AWARDS"); (iv) incentive stock
options ("ISOS"); (v) nonqualified stock options ("NQSOS"); and (vi) Stock
Units, all as described below.

            (a) STOCK APPRECIATION RIGHTS. A SAR is the right to receive all or
      a portion of the difference between the fair market value of a share of
      Common Stock at the time of exercise of the SAR and the exercise price of
      the SAR established by the Administrator, subject to such terms and
      conditions set forth in a SAR agreement as may be established by the
      Administrator in its sole discretion. At the discretion of the
      Administrator, SARs may be exercised (i) in conjunction with the exercise
      of an option, (ii) upon lapse of an option, (iii) independent of an option
      or (iv) each of the above in connection with a previously awarded option
      under the Plan. If the option referred to in (i) or (ii) above qualified
      as an ISO pursuant to Section 422 of the Internal Revenue Code of 1986, as
      amended ("CODE"), the related SAR shall comply with the applicable
      provisions of the Code and the regulations issued thereunder. At the time
      of grant, the Administrator may establish, in its sole discretion, a
      maximum amount per share which will be payable upon exercise of a SAR, and
      may impose conditions on exercise of a SAR. At the discretion of the
      Administrator, payment for SARs may be made in cash or shares of Common
      Stock of the Company, or in a combination thereof. SARs will be
      exercisable not later than ten (10) years after the date they are granted
      and will expire in accordance with the terms established by the
      Administrator.

            (b) RESTRICTED STOCK. Restricted Stock is Common Stock of the
      Company issued or transferred under the Plan (other than upon exercise of
      stock options or as Performance Awards) at any purchase price less than
      the fair market value thereof on the date of issuance or transfer, or as a
      bonus, subject to such terms and conditions set forth in a Restricted
      Stock agreement as may be established by the Administrator in its sole
      discretion. In the case of any Restricted Stock:


                                       2
   31
                  (i) The purchase price, if any, will be determined by the
            Administrator.

                  (ii) The period of restriction shall be established by the
            Administrator for any grants of Restricted Stock.

                  (iii) Restricted Stock may be subject to (A) restrictions on
            the sale or other disposition thereof; (B) rights of the Company to
            reacquire such Restricted Stock at the purchase price, if any,
            originally paid therefor upon termination of the employee's
            employment within specified periods; (C) representation by the
            employee that such employee intends to acquire Restricted Stock for
            investment and not for resale; and (D) such other restrictions,
            conditions and terms as the Administrator deems appropriate.

                  (iv) The participant shall be entitled to all dividends paid
            with respect to Restricted Stock during the period of restriction
            and shall not be required to return any such dividends to the
            Company in the event of the forfeiture of the Restricted Stock.

                  (v) The participant shall be entitled to vote the Restricted
            Stock during the period of restriction.

                  (vi) The Administrator shall determine whether Restricted
            Stock is to be delivered to the participant with an appropriate
            legend imprinted on the certificate or if the shares are to be
            issued in the name of a nominee or deposited in escrow pending
            removal of the restrictions.

            (c) PERFORMANCE AWARDS. Performance Awards are Common Stock of the
      Company, monetary units or some combination thereof, to be issued without
      any payment therefor, in the event that certain performance goals
      established by the Administrator are achieved over a period of time
      designated by the Administrator, but not in any event more than five (5)
      years. The goals established by the Administrator may include return on
      average total capital employed, earnings per share, increases in share
      price or such other goals as may be established by the Administrator. In
      the event the minimum corporate goal is not achieved at the conclusion of
      the period, no payment shall be made to the participant. Actual payment of
      the award earned shall be in cash or in Common Stock of the Company or in
      a combination of both, as the Administrator in its sole discretion
      determines. If Common Stock of the Company is used, the participant shall
      not have the right to vote and receive dividends until the goals are
      achieved and the actual shares are issued.

            (d) INCENTIVE STOCK OPTIONS. ISOs are stock options to purchase
      shares of Common Stock at not less than 100% of the fair market value of
      the shares of Common Stock on the date the option is granted, subject to
      such terms and conditions set forth in an option agreement as may be
      established by the Administrator in its sole discretion that conform to
      the requirements of Section 422 of the Code. Such purchase price may be
      paid (i) by check, (ii) in the discretion of the Administrator, by the
      delivery of shares of Common Stock of the Company owned by the participant
      for at least six (6) months or (iii) in the discretion of the
      Administrator, by a combination of any of the foregoing, in the manner
      provided in the option agreement. The aggregate fair market value
      (determined as of the time an option is granted) of the stock with respect
      to which ISOs are exercisable for the first time by an optionee during any
      calendar year (under all option plans of the Company and its subsidiary
      corporations) shall not exceed $100,000.

            (e) NONQUALIFIED STOCK OPTIONS. NQSOs are nonqualified stock options
      to purchase shares of Common Stock at purchase prices established by the
      Administrator on the date


                                       3
   32
      the options are granted, subject to such terms and conditions set forth in
      an option agreement as may be established by the Administrator in its sole
      discretion. The purchase price may be paid (i) by check, (ii) in the
      discretion of the Administrator, by the delivery of shares of Common Stock
      of the Company owned by the participant for at least six (6) months
      ("MATURE STOCK") or (iii) in the discretion of the Administrator, by a
      combination of any of the foregoing, in the manner provided in the option
      agreement.

            (f) STOCK UNITS. A Stock Unit represents the right to receive a
      share of Common Stock from the Company at a designated time in the future,
      subject to such terms and conditions set forth in a Stock Unit agreement
      as may be established by the Administrator in its sole discretion. The
      participant generally does not have the rights of a stockholder until
      receipt of the Common Stock. The Administrator may in its discretion
      provide for payments in cash, or adjustment in the number of Stock Units,
      equivalent to the dividends the participant would have received if the
      participant had been the owner of shares of Common Stock instead of the
      Stock Units.

      6.    ADJUSTMENT PROVISIONS.

            (a) If the Company shall at any time change the number of issued
      shares of Common Stock without new consideration to the Company (such as
      by stock dividends or stock splits), the total number of shares of Common
      Stock reserved for issuance under the Plan shall be appropriately
      adjusted, and the number of shares of Common Stock covered by each
      outstanding benefit shall be appropriately adjusted so that the aggregate
      consideration payable to the Company, if any, and the value of each such
      benefit shall not be changed. Benefits may also contain provisions for
      their continuation or for other equitable adjustments after changes in the
      Common Stock resulting from reorganization, sale, merger, consolidation,
      issuance of stock rights or warrants or similar occurrence.

            (b) Notwithstanding any other provision of the Plan, and without
      affecting the number of shares of Common Stock reserved or available
      hereunder, the Board of Directors may authorize the issuance or assumption
      of benefits in connection with any merger, consolidation, acquisition of
      property or stock, or reorganization upon such terms and conditions as it
      may deem appropriate.

      7. NO RIGHT TO CONTINUE AS AN OFFICER OR EMPLOYEE; NO STOCKHOLDER RIGHTS.
Neither the Plan, nor the granting of any benefit nor any other action taken
pursuant to the Plan, shall constitute or be evidence of any agreement or
understanding, express or implied, that a participant has a right to continue as
a participant or as an officer or employee of the Company for any period of
time. No participant shall have rights as a stockholder under the Plan, but may
have such rights only if the particular benefit granted under the Plan
independently contains such rights as a matter of law.

      8. AMENDMENT; GOVERNING LAW. The Board of Directors may revise or amend
the Plan in any respect whatsoever; provided, that, without approval of the
stockholders of the Company, no revision or amendment shall (i) change the
selection or eligibility requirements under the Plan, (ii) increase the number
of shares of Common Stock that may be issued under the Plan or (iii) increase
the amount or type of benefits that may be granted under the Plan. By mutual
agreement between the Company and a participant hereunder, benefits may be
granted to such participant in substitution and exchange for, and in
cancellation of, any benefits previously granted such participant under the
Plan. No action authorized by this paragraph shall reduce the amount of any
existing benefit or change the terms and conditions thereof without the
participant's consent. The validity, construction and effect of the Plan shall
be determined in accordance with the laws of the State of Missouri.


                                       4
   33
      9. EFFECTIVE DATE, DURATION, SUSPENSION AND TERMINATION OF THE PLAN. The
Plan shall become effective immediately following approval by the stockholders
of the Company at the 2001 Annual Meeting of Stockholders. The period during
which benefits may be granted under the Plan shall terminate on the day
following the tenth anniversary of the 2001 Annual Meeting of Stockholders
(unless the Plan is extended or terminated at an earlier date by stockholders);
provided, (i) such termination shall not affect the terms of any then
outstanding benefit and (ii) the terms and conditions applicable to any benefit
granted within such period may thereafter be amended or modified by mutual
agreement between the Company and the participant or such other person as may
then have an interest therein. The Board may suspend or terminate the Plan at
any time and for any reason.


                                       5
   34


                          INSITUFORM TECHNOLOGIES, INC.

                2001 NON-EMPLOYEE DIRECTOR EQUITY INCENTIVE PLAN


      1. PURPOSE AND NATURE OF PLAN. The purpose of this 2001 Non-Employee
Director Equity Incentive Plan (the "PLAN") of Insituform Technologies, Inc.
(the "COMPANY") is to increase the ownership interest in the Company of
non-employee directors whose services are considered essential to the Company's
continued progress and, thus, provide further incentive and compensation for
service as a director of the Company.

      2. ADMINISTRATION. The Plan shall be administered by the Board of
Directors of the Company (the "BOARD"). Subject to the provisions of the Plan,
the Board shall have exclusive authority to interpret and administer the Plan,
to establish, amend, and rescind any rules and regulations relating to the Plan,
and to take all steps and make all determinations necessary or advisable for the
administration of the Plan; provided, that the Board shall not have the
authority to take any action or make any determination that would materially
increase the benefits of participants under the Plan. The determination of the
Board in the administration of the Plan shall be conclusive and binding upon all
persons, including without limitation the Company, its stockholders and persons
granted options or other benefits under the Plan. The officers of the Company
shall be authorized to implement the Plan in accordance with its terms and to
take such actions of a ministerial nature as shall be necessary to effectuate
the intent and purposes of the Plan.

      3. PARTICIPANTS. Directors of the Company who are not employees of the
Company (or any affiliate of the Company) during a calendar year shall be
eligible to participate in the Plan with respect to such calendar year
("ELIGIBLE DIRECTORS").

      4. SHARES SUBJECT TO THE PLAN. Subject to adjustment as provided in
Section 6 (relating to adjustment for changes in capital stock), an aggregate of
200,000 shares of the Company's Class A common shares, $0.01 par value ("COMMON
STOCK"), shall be available for issuance under the Plan. The shares of Common
Stock issued under the Plan may be made available from authorized but unissued
shares or from shares re-acquired by the Company, including shares purchased in
the open market or in private transactions. If any option granted under the Plan
shall expire or terminate for any reason without having been exercised in full,
the shares subject to, but not delivered under, such option may again become
available for the grant of other options under the Plan.

      5. STOCK OPTIONS. All options granted under the Plan shall be
non-statutory options not intended to qualify under Section 422 of the Internal
Revenue Code of 1986, as amended. Each option granted under the Plan shall be
evidenced by a written agreement in such form as the Board shall from time to
time approve, which agreement shall comply with and be subject to the following
terms and conditions:

            (a) NEW ELIGIBLE DIRECTOR INITIAL OPTION GRANTS. An option to
      purchase shares of Common Stock shall be granted automatically to each new
      Eligible Director on the date such new Eligible Director is elected or
      appointed to the Board (or promptly thereafter, as determined by the
      Board). Such option shall have a value equal to (i) a percentage
      (determined by the Board) of the Total Director Compensation (as defined
      below) plus (ii) the Equity Percentage of Total Director Compensation for
      such Eligible Director prorated for the then current annual period. The
      value of such options shall be determined by the Board on the basis of the
      Black-Scholes
   35
      option pricing model. The Board may increase the number of shares of
      Common Stock subject to any such initial option grant in its sole
      discretion.

            (b) ANNUAL OPTION GRANTS. An option to purchase shares of Common
      Stock may be granted to each Eligible Director once each year on the date
      of the Annual Meeting of the Stockholders of the Company (or promptly
      thereafter, as determined by the Board); provided, such Eligible Director
      continues to be an Eligible Director after such Annual Meeting. Such
      option shall have a value equal to the Equity Percentage of Total Director
      Compensation for such Eligible Director at the time of the grant. From
      time to time, the Board will establish the overall, base annual
      compensation level (excluding periodic meeting fees and expense
      reimbursements) paid or payable to Eligible Directors ("TOTAL DIRECTOR
      COMPENSATION"). From time to time and in its discretion, the Board may (i)
      establish a percentage of the Total Director Compensation to be paid in
      option grants under the Plan to all Eligible Directors, (ii) allow
      individual Eligible Directors to elect to receive a percentage of their
      respective Total Director Compensation in option grants under the Plan or
      (iii) establish a formula that is a combination of the foregoing (as
      applicable to any specific Eligible Director, an "EQUITY PERCENTAGE"). The
      value of such options shall be determined by the Board on the basis of the
      Black-Scholes option pricing model.

            (c) EXERCISE PRICE. The purchase price per share of Common Stock for
      which each option is exercisable shall be the fair market value per share
      of Common Stock on the date the option is granted, which shall be the
      closing price per share of the Common Stock as generally reported by
      NASDAQ.

            (d) VESTING, EXERCISABILITY AND TERM OF OPTIONS. Each option granted
      under the Plan shall be fully vested and exercisable immediately, and
      shall expire as provided in the written agreement relating thereto (but in
      no event after ten (10) years from the date of the grant), subject to
      earlier termination as provided below.

            (e) TERMINATION OF SERVICE; DEATH. If any option holder's service on
      the Board is terminated for any reason (other than such option holder's
      death), then such option holder may not exercise options granted under the
      Plan at any time after thirty (30) days following such termination of
      service, and, in no event, after the expiration date of the term of the
      option. If any option holder's service on the Board is terminated as a
      result of the option holder's death, then such option holder's legal
      representative may not exercise options granted under the Plan at any time
      after one (1) year following such termination of service, and, in no
      event, after the expiration date of the term of the option.

            (f) PAYMENT. Options may be exercised only upon payment to the
      Company in full of the purchase price of the shares of Common Stock to be
      delivered. Such payment shall be made in cash or, if permitted in the
      written option agreement, in Common Stock beneficially owned by the option
      holder for at least six (6) months before the date of exercise of the
      option ("MATURE COMMON STOCK") or in a combination of cash and Mature
      Common Stock. The sum of the cash and the fair market value of such Mature
      Common Stock shall be at least equal to the aggregate price of the shares
      of Common Stock to be delivered.

            (g) NON-ASSIGNABLE AND NON-TRANSFERABLE OPTIONS. All options granted
      under the Plan shall be non-assignable and non-transferable other than by
      will or the laws of descent and distribution, and shall be exercisable
      during the option holder's lifetime only by the option holder or the
      option holder's guardian or legal representative.


                                       2
   36
      6. ADJUSTMENT PROVISIONS. If the Company shall at any time change the
number of issued shares of Common Stock without new consideration to the Company
(such as by stock dividends or stock splits), the total number of shares of
Common Stock reserved for issuance under the Plan shall be appropriately
adjusted, and the number of shares of Common Stock covered by each outstanding
option shall be appropriately adjusted so that the aggregate consideration
payable to the Company and the aggregate shares of Common Stock issuable under
each option shall not be changed. Written option agreements may also contain
provisions for their continuation or for other equitable adjustments after
changes in the Common Stock resulting from the Company's reorganization,
recapitalization, sale, merger, consolidation, issuance of stock rights or
warrants, or similar occurrence.

      7. NO RIGHT TO CONTINUE AS A DIRECTOR; NO STOCKHOLDER RIGHTS FOR OPTIONS.
Neither the Plan, nor the granting of an option nor any other action taken
pursuant to the Plan, shall constitute or be evidence of any agreement or
understanding, express or implied, that the Eligible Director has a right to
continue as an Eligible Director for any period of time, or at any particular
rate of compensation. No Eligible Director shall have rights as a stockholder
with respect to shares of Common Stock covered by options granted hereunder
until the date of the issuance of a stock certificate therefor.

      8. AMENDMENT; GOVERNING LAW. The Board may revise or amend the Plan in any
respect whatsoever; provided, that, without approval of the stockholders of the
Company, no revision or amendment shall (i) change the selection or eligibility
requirements under the Plan, (ii) increase the number of shares of Common Stock
that may be issued under the Plan or (iii) increase the amount or type of
benefits that may be granted under the Plan. By mutual agreement between the
Company and an option holder hereunder, options may be granted to such option
holder in substitution and exchange for, and in cancellation of, any options
previously granted under the Plan. No action authorized by this paragraph shall
reduce the amount of any existing option or change the terms and conditions
thereof without the option holder's consent. The validity, construction and
effect of the Plan shall be determined in accordance with the laws of the State
of Missouri.

      9. EFFECTIVE DATE, DURATION, SUSPENSION AND TERMINATION OF THE PLAN. The
Plan shall become effective immediately following approval by the stockholders
of the Company at the 2001 Annual Meeting of Stockholders. The period during
which option grants shall be made under the Plan shall terminate on the day
following the tenth anniversary of the 2001 Annual Meeting of Stockholders
(unless the Plan is extended or terminated at an earlier date by stockholders);
provided, (i) such termination shall not affect the terms of any then
outstanding option and (ii) the terms and conditions applicable to any option
granted within such period may thereafter be amended or modified by mutual
agreement between the Company and the option holder. The Board may suspend or
terminate the Plan at any time and for any reason.


                                       3
   37


                          INSITUFORM TECHNOLOGIES, INC.

                            LONG-TERM INCENTIVE PLAN


      1. PURPOSE. The purpose of the Insituform Technologies, Inc. Long-Term
Incentive Plan (the "PLAN") is to provide members of the senior management of
Insituform Technologies, Inc. (the "COMPANY") and its affiliates with long-term
incentive compensation based on the level of achievement of financial and other
performance criteria. The Plan is intended to focus the key employees on the
critical measures of the Company's success and to reward such employees for
achieving such key measures of the Company's success.

      2. DEFINITIONS. As used in the Plan, the following terms shall have the
meanings set forth below:

      "AWARD" shall mean a cash payment (whether paid currently or deferred), or
a grant of a "benefit" (other than a stock option) pursuant to the Equity Plan.

      "BOARD" shall mean the Board of Directors of the Company.

      "CODE" shall mean the Internal Revenue Code of 1986, as amended.

      "COMMON STOCK" shall mean the Class A common stock, par value $0.01 per
share, of the Company.

      "COMPENSATION COMMITTEE" shall mean the Compensation Committee of the
Board (or any successor committee), which committee shall consist solely of two
or more "outside directors" within the meaning of Section 162(m) of the Code.

      "COVERED EMPLOYEE" shall mean a "covered employee" within the meaning of
Section 162(m) of the Code.

      "EQUITY PLAN" shall mean the Insituform Technologies, Inc. 2001 Employee
Equity Incentive Plan and any successor plan of the Company.

      "PARTICIPANT" shall mean any executive of the Company who is eligible to
participate in accordance with Section 3 of this Plan.

      "PERFORMANCE PERIOD" shall mean any period of at least one year designated
as a Performance Period by the Compensation Committee.

      "PERFORMANCE AWARD" shall mean an Award level that may be paid if certain
performance goals are achieved in the Performance Period.

      3. ELIGIBILITY. The Participants in this Plan for any Performance Period
shall be comprised of each employee of the Company who is a Covered Employee
during such Performance Period, or who may be a Covered Employee as of the end
of a tax year for which the Company would claim a tax deduction in connection
with payment of compensation to such employee during such Performance Period,
and who is designated individually or by class to be a Participant for such
Performance Period by the Compensation Committee at the time a Performance Award
is established for such employee.
   38
      4. AWARDS.

                  (a) The Compensation Committee shall establish objective
      performance goals in writing not later than 90 days after the beginning of
      each Performance Period. The performance goals will be based on one or
      more of the following business criteria: stock price, sales, return on
      equity, book value, expense management, earnings per share, free cash
      flow, net income, individual performance and business unit performance.
      The Compensation Committee will specifically define such terms at the time
      it establishes the performance goals. Such performance goals shall be
      sufficiently detailed and objective so that a third party having knowledge
      of the relevant performance results could calculate the amount to be paid
      to the Participant pursuant to such Performance Award formula.

                  (b) The Compensation Committee shall also establish the
      Performance Award payable to a Participant if the performance goals are
      achieved. The payment of any Award shall be subject to achievement of the
      performance goals. The Compensation Committee may, in its discretion,
      reduce the amount of any Award based on such criteria as it shall
      determine. Awards shall be paid as soon as practical after the
      Compensation Committee has certified that the performance goals for the
      Performance Period have been achieved.

                  (c) Prior to the payment of any Award, the Compensation
      Committee shall certify in writing that the performance goals applicable
      to such Award were met.

                  (d) The Compensation Committee shall have the power to impose
      such other restrictions on Awards as it may deem necessary or appropriate
      to ensure that such Awards satisfy all requirements for "performance-based
      compensation" within the meaning of Section 162(m) of the Code, the
      regulations promulgated thereunder, and any successors thereto.

                  (e) The maximun aggregate amount of compensation that may be
      paid to a Participant in any fiscal year of the Company pursuant to one
      or more Performance Awards under this Plan shall not exceed the Maximum
      Amount for such fiscal year.  If the Maximum Amount (including
      carryforwards under this  sentence) for a fiscal year exceeds the amount
      paid to a Participant in that year, such excess shall be carried forward
      and added to the Maximum Amount for the succeeding fiscal year. For
      this purpose, the Maximum Amount for a fiscal year shall be $2,000,000
      for the 2001 fiscal year, and, for each succeeding fiscal year, 110% of
      the Maximum Amount for the immediately preceding year (determined without
      regard to any carryforward); and compensation shall be treated as paid
      when such compensation would be allowable as a deduction under Chapter 1
      of the Code (without regard to Section 162(m) of the Code).

      5. FORM OF PAYMENT. An Award shall be paid in the form of cash, or in the
form of a "benefit" in accordance with an award pursuant to the Equity Plan.

      6. TIME OF PAYMENT. An Award for a Performance Period normally shall be
paid as soon as administratively feasible after the Compensation Committee
certifies in writing that the performance goals applicable to such Award were
met. However, a Participant may elect to defer receipt of such a payment in
accordance with the terms of the Insituform Technologies, Inc. Senior Management
Voluntary Deferred Compensation Plan or any successor plan.

      7. OTHER CONDITIONS.

            (a) No person shall have any claim to an Award under the Plan. There
is no obligation of uniformity of treatment of Participants under the Plan.
Awards under the Plan may not be assigned or alienated.

            (b) Neither the Plan, nor any action taken hereunder, shall be
construed as giving to any Participant the right to be retained in the employ of
the Company or an affiliate.
   39
            (c) The Company or any affiliate shall have the right to deduct from
any Award to be paid under the Plan any federal, state or local taxes required
by law to be withheld with respect to such payment.

      8. PLAN ADMINISTRATION.

                  (a) The Compensation Committee shall have full discretionary
      power to administer and interpret the Plan and to establish rules for its
      administration. In making any determinations under or referred to in the
      Plan, the Compensation Committee shall be entitled to rely on opinions,
      reports or statements of employees of the Company and its affiliates and
      of counsel, public accountants and other professional or expert persons.

                  (b) The Plan shall be governed by the laws of the State of
      Missouri and applicable federal law.

      9. MODIFICATION OR TERMINATION OF PLAN. The Board may modify or terminate
the Plan at any time, effective at such date as the Board may determine.

      10. STOCKHOLDER APPROVAL. This Plan shall be subject to approval by the
affirmative vote of a majority of the shares of Common Stock cast in a separate
vote of the stockholders of the Company at the 2001 Annual Meeting of
Stockholders, and such stockholder approval shall be a condition to the right of
a Participant to receive any Award hereunder.