SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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

                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



Date of Report
(Date of earliest event reported):                       July 24, 2003
                                               ---------------------------------



                          INSITUFORM TECHNOLOGIES, INC.
                ------------------------------------------------
             (Exact name of registrant as specified in its charter)


            Delaware                      0-10786                 13-3032158
-------------------------------   ------------------------   -------------------
(State or other jurisdiction of   (Commission File Number)      (IRS Employer
         incorporation)                                      Identification No.)


 702 Spirit 40 Park Drive, Chesterfield, Missouri                   63005
----------------------------------------------------------   -------------------
     (Address of principal executive offices)                      (Zip Code)


Registrant's telephone number,
including area code                                     (636) 530-8000
                                               ---------------------------------




Item 7.           Financial Statements and Exhibits.

         (c)      Exhibits.

                  See the Index to Exhibits attached hereto.


Item 12.          Results of Operations and Financial Condition.

         On July 24, 2003, the registrant issued an earnings release announcing
its financial results for the fiscal quarter ended June 30, 2003. A copy of the
earnings release is furnished herewith as Exhibit 99.1. On July 25, 2003, the
registrant held a conference call to announce and discuss its financial results
for the fiscal quarter ended June 30, 2003. A transcript of the conference call
is furnished herewith as Exhibit 99.2.







                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                   INSITUFORM TECHNOLOGIES, INC.


                                   By:   /s/ Joseph A. White
                                      ------------------------------------------
                                      Joseph A. White
                                      Vice President and Chief Financial Officer

Date:  July 30, 2003




                                INDEX TO EXHIBITS

Exhibit           Description
-------           -----------
 99.1             Earnings release of Insituform Technologies, Inc., dated July
                  24, 2003, announcing its financial results for the fiscal
                  quarter ended June 30, 2003.

 99.2             Transcript of Insituform Technologies, Inc.'s July 25, 2003
                  conference call held to announce and discuss its financial
                  results for the fiscal quarter ended June 30, 2003.