Insituform Technologies, Inc. Expands Asian Operation Through Acquisition of Singapore Licensee

ST. LOUIS, MO, JANUARY 29, 2010 – Insituform Technologies, Inc. (Nasdaq Global Select Market: INSU) today announced its acquisition of Insitu Envirotech (S.E. Asia) Pte Ltd, its former licensee in Singapore (“Insitu S.E. Asia”), for US $1.3 million.

Daniel E. Cowan, Vice President – Asia Pacific for Insituform, said, “This acquisition further expands Insituform’s trenchless rehabilitation business in Southeast Asia, providing meaningful access to the Singapore and Malaysian rehabilitation markets and bolstering our operations in India, Hong Kong and Australia. The trenchless rehabilitation market in Singapore is experiencing significant growth as a result of a recently-initiated, four-year US $295 million rehabilitation program announced by the Public Utility Board (PUB), Singapore’s national water agency. Insituform’s proprietary trenchless products, including iPlus Infusion® for sewer pipelines and InsituMain™ for water pipelines, are well suited for this market and should allow Insituform to significantly expand Insitu S.E. Asia’s operations.”

Cowan further commented, “This acquisition also allows Insituform to expand its third-party CIPP tube sales into the Singapore market, which previously had been prohibited by the terms of the exclusive license agreement held by Insitu S.E. Asia. Insituform already has received orders for approximately 80 miles (approximately US $1.7 million) of CIPP tube in Singapore. We believe that third-party tube sales will provide a meaningful contribution to this business in 2010 and beyond.”

Insitu S.E. Asia, an ISO 9001:2008 and OSHA 18001:2007 certified company, has provided trenchless rehabilitation services in Singapore for more than 15 years, most recently as a subsidiary of IJM Corporation Berhad, one of the largest contracting companies in Asia.

For photography, an interview or for more information on the Insituform® process and how it works, please contact Aura Joyce at 636-530-8775 or ajoyce@insituform.com.

About Insituform
Insituform Technologies, Inc. is a leading worldwide provider of proprietary technologies and services for rehabilitating sewer, water, energy and mining piping systems and the corrosion protection of industrial pipelines. More information about the Company can be found on its internet site at www.insituform.com.

Forward-Looking Statements
The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements. The Company makes forward-looking statements in this news release that represent the Company’s beliefs or expectations about future events or financial performance. These forward-looking statements are based on information currently available to the Company and on management’s beliefs, assumptions, estimates or projections and are not guarantees of future events or results. When used in this document, the words “anticipate,” “estimate,” “believe,” “plan,” “intend,” “may,” “will” and similar expressions are intended to identify forward-looking statements, but are not the exclusive means of identifying such statements. Such statements are subject to known and unknown risks, uncertainties and assumptions, including those referred to in the “Risk Factors” section of the Company’s Annual Report on Form 10-K for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on March 2, 2009, and in our subsequent quarterly reports on Form 10-Q. In light of these risks, uncertainties and assumptions, the forward-looking events may not occur. In addition, our actual results may vary materially from those anticipated, estimated, suggested or projected. Except as required by law, we do not assume a duty to update forward-looking statement, whether as a result of new information, future events or otherwise. Investors should, however, review additional disclosures made by the Company from time to time in its periodic filings with the Securities and Exchange Commission. Please use caution and do not place reliance on forward-looking statements. All forward-looking statements made by the Company in this news release
are qualified by these cautionary statements.

Insituform®, the Insituform® logo, iPlus Infusion® and InsituMain™ are the registered trademarks of Insituform Technologies, Inc. and/or its affiliates.

For more information, contact:
David F. Morris
Senior Vice President and Chief Administrative Officer
636-530-8000