Insituform Wins Two Sewer Rehabilitation Contracts from Hallsdale-Powell Utility District for Combined Value of $6.5 Million

Insituform Technologies, Inc. (Nasdaq Global Select Market: INSU) announced today it has been awarded two contracts with a combined value of $6.5 million from the Hallsdale-Powell Utility District in Knoxville, Tennessee. These contracts mark the first time Insituform will work with the District. Hallsdale-Powell will fund the projects with a state revolving fund loan secured through the American Recovery and Reinvestment Act (ARRA),

Hallsdale-Powell had planned to complete this project in a series of contracts to be awarded over the next three years. However, by accessing the additional funds available through the ARRA, the District will be able to upgrade its system more quickly, significantly reducing infiltration into its existing system. Insituform will rehabilitate approximately 25 miles of sewer pipelines with its core cured-in-place pipe (CIPP) technology. The project is expected to be completed by June 2011.

Bobby O’Dell, Insituform’s General Manager-Central Region, said, "Insituform has been the leader in CIPP technology for nearly 40 years. We look forward to utilizing our proven processes and project management experience to assist the Hallsdale-Powell Utility District in upgrading its sewer system.”

Insituform will partner with Hallsdale-Powell Utility District as well as the engineering firm, Jordon Jones and Goulding, to inform the residents of the Knoxville area about the project and the benefits of the rehabilitation efforts.

"It’s clear Hallsdale-Powell Utility District truly understands the importance of quality infrastructure rehabilitation and how it can dramatically help improve the daily life of communities, neighborhoods and residents,” said David Reece, regional manager at Jordan, Jones and Goulding. "JJG is pleased to work with the talented professionals at Insituform on this project and we are eager to assist all of the people living and working along the 25 miles of wastewater pipelines that are to be rehabilitated.”

Insituform’s crew based in Knoxville will begin work on this project in March 2010. A minority-owned business will provide the open-cut work and pipe-bursting for a portion of the project. Additional contractors from Tennessee will provide the required manhole rehabilitation, lateral rehabilitation, pipe bursting and closed-circuit television inspection services as subcontractors to Insituform.

For photography, an interview, or more information on the Insituform® CIPP 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, 2009, as filed with the Securities and Exchange Commission on March 1, 2010 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.

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