exhibit23.htm

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-66714, 333-66712, 333-64688, 333-64690, 333-134244, 333-134251, 333-134252 and 333-142527) of Insituform Technologies, Inc. of our report dated March 7, 2008 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in the Annual Report to Shareholders, which is incorporated in this Annual Report on Form 10-K.