Philadelphia Awards Insituform $6.0 Million Contract to Rehabilitate Sewer Pipes, Preserve Tacony Creek Park

Project Will Fix Pipes With Little Disruption to Park`s Urban Meadows
ST. LOUIS--(Business Wire)--
The Philadelphia Water Department ("PWD") has awarded Insituform Technologies,
Inc. (Nasdaq Global Select Market: INSU) a $6.0 million contract to rehabilitate
approximately 10,000 feet of sanitary sewer pipes that run beneath the urban
meadows of one of Philadelphia`s largest parks. Insituform`s leading technology,
cured-in-place pipe (CIPP), will allow the company to do this work and protect
the park from digging and disruption.

The project will rehabilitate 12-inch to 60-inch diameter sanitary sewers that
primarily lie underneath Tacony Creek Park, which includes 302 acres of meadows,
wetlands, green space and 2.5 miles of creekside trails inside the Olney
Neighborhood on the north side of Philadelphia. Work on this project, with pipes
estimated to be over 100-years old, will begin in November 2009 and take
approximately one year to complete.

Philadelphia has a long-standing tradition of being a leader in water
technologies. In fact, Philadelphia created the nation`s first water system in
the 19th century. Jeff Twardzik, Assistant Engineering Supervisor for the
Philadelphia Water Department, said, "This process allows us to stay at the
forefront of technology and completely rehabilitate the sewer without disrupting
the local ecosystem and park areas. The project will also be running
concurrently with a stream restoration project and a combined sewer overflow
project in the same area. The Insituform process allows us to work alongside
these important projects without interruption. PWD is excited to be working with
Insituform again."

The Insituform CIPP process is Insituform`s core technology and an affordable
solution used to reduce infiltration, restore structural integrity and increase
flow capacity.

A pre-qualified contractor, Insituform has worked with Philadelphia Water on
various projects for over twenty years. As the general contractor on this
project, Insituform will utilize local minority contractors for various aspects
of this project.

For photography, an interview, or more information on the 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, 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 and the Insituform logo are the registered trademarks of Insituform
Technologies, Inc. and its affiliates.

Insituform Technologies, Inc.
David F. Morris, 636-530-8000
Senior Vice President and Chief Administrative Officer

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