EXHIBIT 4(iv)


                             BY-LAWS

                               OF

                  INSITUFORM TECHNOLOGIES, INC.



                       ARTICLE I - OFFICES

     The principal offices of the corporation in the State of
Delaware shall be located in the City of Dover, County of Kent. The
Corporation may have such other offices, either within or without
the State of incorporation as the board of directors may designate
or as the business of the corporation may from time to time
require.

                    ARTICLE II - STOCKHOLDERS

     1.   ANNUAL MEETING.

          The annual meeting of the stockholders shall be held at
such time and upon such date during the month of June in each year
as the Board of Directors may determine, for the purpose of
electing directors and for the transaction of such other business
as may come before the meeting.  If the day fixed for the annual
meeting shall be a legal holiday such meeting shall be held on the
next succeeding business day.

     2.   SPECIAL MEETINGS.

          Special meetings of the stockholders, for any purpose or
purposes, unless otherwise prescribed by statute, may be called by
either the chairman of the board, the president or by the
directors, and shall be called by the president at the request of
the holders of not less than fifty per cent of all the outstanding
shares of the Corporation entitled to vote at the meeting.

     3.   PLACE OF MEETING.

          The directors may designate any place, either within or
without the State unless otherwise prescribed by statute, as the
place of meeting for any annual meeting or for any special meeting
called by the directors. A waiver of notice signed by all
stockholders entitled to vote at a meeting may designate any place,
either within or without the state unless otherwise prescribed by
statute, as the place for holding such meeting.  If no designation
is made, or if a special meeting be otherwise called, the place of
meeting shall be the principal office of the corporation.



     4.   NOTICE OF MEETING.

          Written or printed notice stating the place, day and hour
of the meeting and, in the case of a special meeting, the purpose
or purposes for which the meeting is called, shall be delivered not
less than ten nor more than fifty days before the date of the
meeting, either personally or by mail, by or at the direction of
either the chairman of the board, the president, the secretary, or
the officer or persons calling the meeting, to each stockholder of
record entitled to vote at such meeting. If mailed, such notice
shall be deemed to be delivered when deposited in the United States
mail, addressed to the stockholder at his address as it appears on
the stock transfer books of the corporation, with postage thereon
pre-paid.

     5.   CLOSING OF TRANSFER BOOKS OR FIXING OF RECORD DATE.

          For the purpose of determining stockholders entitled to
notice of or to vote at any meeting of stockholders or any
adjournment thereof, or stockholders entitled to receive payment of
any dividend, or in order to make a determination of stockholders
for any other proper purpose, the directors may fix in advance a
date as the record date for any such determination of stockholders,
such date in any case to be not more than sixty days and, in case
of a meeting of stockholders, not less than ten days prior to the
date on which the particular action requiring such determination of
stockholders is to be taken. If the stock transfer books are not
closed and no record date is fixed for the determination of
stockholders entitled to notice of or to vote at a meeting of
stockholders, or stockholders entitled to receive payment of a
dividend, the date on which notice of the meeting is mailed or the
date on which the resolution of the directors declaring such
dividend is adopted, as the case may be, shall be the record date
for such determination of stockholders. When a determination of
stockholders entitled to vote at any meeting of stockholders has
been made as provided in this section, such determination shall
apply to any adjournment thereof.

     6.   VOTING LISTS.

          The officer or agent having charge of the stock transfer
books for shares of the corporation shall make, at least ten days
before each meeting of stockholders, a complete list of the
stockholders entitled to vote at such meeting, or any adjournment
thereof, arranged in alphabetical order, with the address of and
the number of shares held by each, which list, for a period of ten
days prior to such meeting, shall be kept on file at the principal
office of the corporation and shall be subject to inspection by any
stockholder at any time during usual business hours. Such list
shall also be produced and kept open at the time and place of the
meeting and shall be subject to the inspection of any stockholder


during the whole time of the meeting. The original stock transfer
book shall be prima facie evidence as to who are the stockholders
entitled to examine such list or transfer books or to vote at the
meeting of stockholders.

     7.   QUORUM.

          At any meeting of stockholders a majority of the
outstanding shares of the corporation entitled to vote, represented
in person or by proxy, shall constitute a quorum at a meeting of
stockholders. If less than said number of the outstanding shares
are represented at a meeting, a majority of the shares so
represented may adjourn the meeting from time to time without
further notice. At such adjourned meeting at which a quorum shall
be present or represented, any business may be transacted which
might have been transacted at the meeting as originally notified.
The stockholders present at a duly organized meeting may continue
to transact business until adjournment, notwithstanding the
withdrawal of enough stockholders to leave less than a quorum.

     8.   PROXIES.

          At all meetings of stockholders, a stockholder may vote
by proxy executed in writing by the stockholder or by his duly
authorized attorney-in-fact. Such proxy shall be filed with the
secretary of the corporation before or at the time of the meeting.

     9.   VOTING.

          Each stockholder entitled to vote in accordance with the
terms and provisions of the certificate of incorporation and these
by-laws shall be entitled to one vote, in person or by proxy, for
each share of stock entitled to vote held by such stockholders.
Upon the demand of any stockholder, the vote for directors and upon
any question before the meeting shall be by ballot. All elections
for directors shall be decided by plurality vote; all other
questions shall be decided by majority vote except as otherwise
provided by the Certificate of Incorporation or the laws of this
State.

     10.  ORDER OF BUSINESS.

          The order of business at all meetings of the
stockholders, shall be as follows:

          1.   Roll call.

          2.   Proof of notice of meeting or waiver of notice.

          3.   Reading of minutes of preceding meeting.


 
          4.   Reports of Officer.

          5.   Reports of Committees.

          6.   Election of Directors.

          7.   Unfinished Business.

          8.   New Business.


                ARTICLE III - BOARD OF DIRECTORS

     1.   GENERAL POWERS.

          The business and affairs of the corporation shall be
managed by its board of directors. The directors shall in all cases
act as a board, and they may adopt such rules and regulations for
the conduct of their meetings and the management of the
corporation, as they may deem proper, not inconsistent with these
by-laws and the laws of this State.

     2.   NUMBER OF DIRECTORS, TENURE AND QUALIFICATIONS.

          The Board of Directors shall consist of thirteen (13)
directors.  Such directors (except as hereinafter provided for the
filling of vacancies) shall be elected in accordance with the
Corporation's Certificate of Incorporation by the stockholders by
a plurality vote of the number of shares voting at the meeting at
which such election shall take place.

     3.   REGULAR MEETINGS.

          A regular meeting of the directors, shall be held without
other notice than this by-law immediately after, and at the same
place as, the annual meeting of stockholders. The directors may
provide, by resolution, the time and place for the holding of
additional regular meetings without other notice than such
resolution.

     4.   SPECIAL MEETINGS.

          Special meetings of the directors may be called by or at
the request of the president, the Chairman of the Board, or any two
directors. The person or persons authorized to call special
meetings of the directors may fix the place either within or
without the state or country, for holding any special meeting of
the directors called by them.



     5.   NOTICE.

          Notice of any special meeting shall be given at least 24
hours previously thereto by written notice delivered personally, or
by telegram or telecopy or mailed to each director at his residence
or business address. If mailed, such notice shall be deemed to be
delivered when deposited in the United States mail so addressed,
with postage thereon prepaid.  If notice be given by telegram, such
notice shall be deemed to be delivered when the telegram is
delivered to the telegraph company. The attendance of a director at
a meeting shall constitute a waiver of notice of such meeting,
except where a director attends a meeting for the express purpose
of objecting to the transaction of any business because the meeting
is not lawfully called or convened.

     6.   QUORUM.

          At any meeting of the directors a majority shall
constitute a quorum for the transaction of business, but if less
than said number is present at a meeting, a majority of the
directors present may adjourn the meeting from time to time without
further notice.

     7.   MANNER OF ACTING.

          The act of the majority of the directors present at a
meeting at which a quorum is present shall be the act of the
directors.

     8.   NEWLY CREATED DIRECTORSHIPS AND VACANCIES.

          Any vacancy on the Board of Directors and any newly
created directorship resulting from an increase in the number of
directors may be filled by the directors in accordance with the
Corporation's Certificate of Incorporation.

     9.   REMOVAL OF DIRECTORS.

          Any or all of the directors may be removed only for cause
by vote of the stockholders.

     10.  RESIGNATION.

          A director may resign at any time by giving written
notice to the board, the president or the secretary of the
corporation. Unless otherwise specified in the notice, the
resignation shall take effect upon receipt thereof by the board or
such officer, and the acceptance of the resignation shall not be
necessary to make it effective.




     11.  COMPENSATION.

          No compensation shall be paid to directors, as such, for
their services, but by resolution of the board a fixed sum and
expenses for actual attendance at each regular or special meeting
of the board may be authorized. Nothing herein contained shall be
construed to preclude any director from serving the corporation in
any other capacity and receiving compensation therefor.

     12.  PRESUMPTION OF ASSENT.

          A director of the corporation who is present at a meeting
of the directors at which action on any corporate matter is taken
shall be presumed to have assented to the action taken unless his
dissent shall be entered in the minutes of the meeting or unless he
shall file his written dissent to such action with the person
acting as the secretary of the meeting before the adjournment
thereof or shall forward such dissent by registered mail to the
secretary of the corporation immediately after the adjournment of
the meeting. Such right to dissent shall not apply to a director
who voted in favor of such action.

     13.  EXECUTIVE AND OTHER COMMITTEES.

          The board, by resolution, may designate from among its
members an executive committee and other committees, each
consisting of one or more directors. Each such committee shall
serve at the pleasure of the board.

                      ARTICLE IV - OFFICERS

     1.   NUMBER.

          The officers of the corporation shall be a chairman of
the board, a vice chairman of the board,a president, one or more
senior vice presidents, one or more vice presidents, a secretary
and a treasurer, each of whom shall be elected by the directors.
Such other officers and assistant officers as may be deemed
necessary may be elected or appointed by the directors.

     2.   ELECTION AND TERM OF OFFICE.

          The officers of the corporation to be elected by the
directors shall be elected annually at the first meeting of the
directors held after each annual meeting of the stockholders. Each
officer shall hold office until his successor shall have been duly
elected and shall have qualified or until his death or until he
shall resign or shall have been removed in the manner hereinafter
provided.




     3.   REMOVAL.

          Any officer or agent elected or appointed by the
directors may be removed by the directors whenever in their
judgment the best interests of the corporation would be served
thereby, but such removal shall be without prejudice to the
contract, if any, of the person so removed.

     4.   VACANCIES.

          A vacancy in any office because of death, resignation,
removal, disqualification or otherwise, may be filled by the
directors for the unexpired portion of the term.

     4A.  CHAIRMAN OF THE BOARD.

          The Chairman of the Board shall preside, when present, at
all meetings of the Board of Directors and at all meetings of the
stockholders and will perform such other duties as may be
prescribed from time to time by the Board or these By-laws.

     4B.  VICE CHAIRMAN OF THE BOARD.

          In the absence of the Chairman of the Board or in the
event of his death, inability or refusal to act, the Vice Chairman
of the Board shall perform the duties of the Chairman of the Board
and, when so acting, shall have all the powers of and be subject to
all the restrictions on the Chairman of the Board. The Vice
Chairman of the Board shall perform such other duties as may be
prescribed from time to time by the Board or these by-laws.

     5.   PRESIDENT.

          The President shall be the chief executive officer of the
corporation and, subject to the control of the Board of Directors,
shall have general and active management of the business of the
corporation, and shall see that all orders and resolutions of the
Board and stockholders are carried into effect. He shall have the
general authority to execute bonds, deeds and contracts, in the
name of the corporation and affix the corporate seal thereto; to
sign stock certificates; to cause the employment or appointment of
such employees and agents of the corporation as the proper conduct
of operations may require, and to fix their compensation, subject
to the provisions of these By-laws; to remove or suspend any
employee or agent who shall have been employed or appointed under
his authority or under authority of an officer subordinate to him;
and, in general, to exercise all the powers and authority usually
appertaining to the chief executive officer of a corporation.





     6.   VICE-PRESIDENT.

          In the absence of the president or in the event of his
death, inability or refusal to act, one of the vice-presidents
designated by the directors shall perform the duties of the
president, and when so acting, shall have all the powers of and be
subject to all the restrictions upon the president.  The
vice-president shall perform such other duties as from time to time
may be assigned to him by the president or by the directors.

     7.   SECRETARY.

          The secretary shall keep the minutes of the stockholders'
and of the directors' meetings in one or more books provided for
that purpose, see that all notices are duly given in accordance
with the provisions of these by-laws or, as required, be custodian
of the corporate records and of the seal of the corporation and
keep a register of the post office address of each stockholder
which shall be furnished to the secretary by such stockholder, have
general charge of the stock transfer books of the corporation and
in general perform all duties incident to the office of secretary
and such other duties as from time to time may be assigned to him
by the president or by the directors.

     8.   TREASURER.

          If required by the directors, the treasurer shall give a
bond for the faithful discharge of his duties in such sum and with
such surety or sureties as the directors shall determine. He shall
have charge and custody of and be responsible for all funds and
securities of the corporation; receive and give receipts for monies
due and payable to the corporation from any source, whatsoever, and
deposit all such monies in the name of corporation in such banks,
trust companies or other depositories as shall be selected in
accordance with these by-laws and in general perform all of the
duties incident to the office of treasurer and such other duties as
from time to time may be assigned to him by the president or by the
directors.

     9.   SALARIES.

          The salaries of the officers shall be fixed from time to
time by the directors and no officer shall be prevented from
receiving such salary by reason of the fact that he is also a
director of the corporation.



        ARTICLE V - CONTRACTS, LOANS, CHECKS AND DEPOSITS

     1.   CONTRACTS.

          The directors may authorized any officer or officers,
agent or agents, to enter into any contract or execute and deliver
any instrument in the name of and on behalf of the corporation, and
such authority may be general or confined to specific instances.

     2.   LOANS.

          No loans shall be contracted on behalf of the corporation
and no evidences of indebtedness shall be issued in its name unless
authorized by a resolution of the directors. Such authority may be
general or confined to specific instances.

     3.   CHECKS, DRAFTS, ETC.

          All checks, drafts or other orders for the payment of
money, notes or other evidences of indebtedness issued in the name
of the corporation, shall be signed by such officer or officers,
agent or agents of the corporation and in such manner as shall from
time to time be determined by resolution of the directors.

     4.   DEPOSITS.

          All funds of the corporation not otherwise employed shall
be deposited from time to time to the credit of the corporation in
such banks, trust companies or other depositaries as the directors
may select.

     ARTICLE VI - CERTIFICATES FOR SHARES AND THEIR TRANSFER

     1.   CERTIFICATES FOR SHARES.

          Certificates representing shares of the corporation shall
be in such form as shall be determined by the directors. Such
certificates shall be signed by any of the chairman of the board,
or the president, as authorized by the directors and the secretary,
or such other officers authorized by law and by the directors. All
certificates for shares shall be consecutively numbered or
otherwise identified. The name and address of the stockholders, the
number of shares and date of issue, shall be entered on the stock
transfer books of the corporation. All certificates surrendered to
the corporation for transfer shall be cancelled and no new
certificate shall be issued until the former certificate for a like
number of shares shall have been surrendered and cancelled, except
that in case of a lost, destroyed or mutilated certificate a new
one may be issued therefor upon such terms and indemnity to the
corporation as the directors may prescribe.



     2.   TRANSFERS OF SHARES.

          (a) Upon surrender to the corporation or the transfer
agent of the corporation of a certificate for shares duly endorsed
or accompanied by proper evidence of succession, assignment or
authority to transfer, it shall be the duty of the corporation to
issue a new certificate to the person entitled thereto, and cancel
the old certificate; every such transfer shall be entered on the
transfer book of the corporation which shall be kept at its
principal office.

          (b) The corporation shall be entitled to treat the holder
of record of any share as the holder in fact thereof, and,
accordingly, shall not be bound to recognized any equitable or
other claim to or interest in such share on the part of any other
person whether or not it shall have express or other notice
thereof, except as expressly provided by the laws of this state.

                    ARTICLE VII - FISCAL YEAR

     The fiscal year of the corporation shall begin on the first
day of January in each year.

                    ARTICLE VIII - DIVIDENDS

     The directors may from time to time declare, and the
corporation may pay, dividends on its outstanding shares in the
manner and upon the terms and conditions provided by law.

                        ARTICLE IX - SEAL

     The directors shall provide a corporate seal which shall be
circular in form and shall have inscribed thereon the name of the
corporation, the state of incorporation, year of incorporation and
the words, "Corporate Seal".

                  ARTICLE X - WAIVER OF NOTICE

     Unless otherwise provided by law, whenever any notice is
required to be given to any stockholder or director of the
corporation under the provisions of these by-laws or under the
provisions of the articles of incorporation, a waiver thereof in
writing, signed by the person or persons entitled to such notice,
whether before or after the time stated therein, shall be deemed
equivalent to the giving of such notice.



                     ARTICLE XI - AMENDMENTS

     Except as otherwise provided by law, the Board of Directors
may adopt, alter, amend or repeal the by-laws of the Corporation,
provided, however, that the stockholders, representing a majority
of all the shares issued and outstanding at any annual stock-
holders' meeting or at any special stockholders' meeting, may
repeal, alter or amend by-laws adopted by the Board or Directors
and may adopt new by-laws; provided, further, however, that the
size of the Board of Directors, as set forth in Section 2 of
Article III, may only be amended by a vote of at least 80% of the
members of the Board of Directors or by a vote of the stockholders,
representing a majority of all of the shares issued and
outstanding, at any annual stockholders' meeting or at any special
stockholders' meeting.