Bayou Companies Completes Acquisition of Pipe Coating and Insulation Facility Located in Western Canada

The Bayou Companies, Inc. ("Bayou”), a subsidiary of Insituform Technologies, Inc. (Nasdaq Global Select Market: INSU), announced today the completion of its $12.25 million (CAN) acquisition of Garneau, Inc’s pipe coating and insulation facility and associated assets located in Camrose, Alberta Canada. The acquisition was effected through Bayou Perma-Pipe Canada, Ltd. ("BPPC”), a joint venture between Bayou and Perma-Pipe, Inc. ("Perma-Pipe”), and will serve as the operating company for Bayou’s Canadian operations.

Bayou announced its agreement to acquire the Camrose facility on September 30, 2009. The Garneau shareholder approved the transaction on October 28, 2009 and the closing occurred today. Bayou expects that this additional pipe coating and insulation facility in Western Canada will increase its addressable market by approximately $200 million.

Jerry Shea, Bayou’s Managing Director, Business Development, said, "We are confident our partnership with Perma-Pipe will add significant value to our customers in the Canadian energy and mining industry. Perma-Pipe is the leading manufacturer of pre-insulated district heating and cooling piping systems in North America and will bring their expertise in pipe insulation to our operation.” Bayou, which was founded in 1942, provides pipe coating, fabrication and logistics capability and is headquartered in New Iberia, Louisiana. Mr. Shea also announced the appointment of Eldridge Indest as President of Bayou Perma-Pipe Canada. Mr. Indest brings his experience as a 32-year veteran with Bayou, most recently serving as Director of Technical Planning in Bayou’s New Iberia operations. Mr. Indest will be relocating to Camrose.

Bayou Perma-Pipe will be communicating directly with all current customers. In the meantime, more information about BPPC can be found on its website, www.bayoupermapipe.com or by calling 780-672-2345. BPPC’s address is 5233 39th Street, Camrose, AB T4V 4R5.

About Bayou

Bayou was acquired by Insituform Technologies, Inc. in February 2009. Bayou is a leading provider of cost-effective solutions to onshore and offshore energy and infrastructure companies primarily in North America and the Gulf of Mexico. Bayou’s products and services include internal and external pipeline coating, lining, weighting and insulation. Bayou also provides specialty fabrication and services for offshore deepwater installations, including project management and logistics. More information about Bayou can be found on its internet site at www.bayoucompanies.com.

About Insituform

Insituform Technologies, Inc. (the "Company”) 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.

About Perma-Pipe

Perma-Pipe, Inc. is the leading manufacturer of pre-insulated district heating and cooling piping systems in North America. Perma-Pipe also offers pre-insulated products for subsea oil and gas gathering, LNG terminals and long distance chemical and petroleum pipeline transportation. Perma-Pipe operates manufacturing plants in Lebanon, Tennessee; New Iberia Louisiana, Mundra India and Fujairah UAE. More information about Perma-Pipe can be found on its internet site at www.permapipe.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®, Bayou™, the Bayou™ logo, BPPC™, Bayou Perma-Pipe Canada™ and the Insituform® logo are the registered and unregistered trademarks of Insituform Technologies, Inc. and its affiliates.