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This communication contains statements and information that constitute
forward-looking statements within the meaning of the Private Securities
Litigation Reform Act of 1995. These statements are based on Insituform’s
current expectations and are subject to a number of risks, uncertainties and
assumptions that could cause actual results to differ materially from those
described in the forward-looking statements. Risks, uncertainties and
assumptions include, without limitation, the company’s expectations
regarding the growth of its markets and the results to be achieved from its
initiatives.  Insituform assumes no obligation and expressly disclaims any
duty to update the information contained herein except as required by law. 
Investors are advised to review the Company’s annual, quarterly and
periodic reports filed with the Securities and Exchange Commission.   

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2005 ASCE Report Card for
America’s Infrastructure

•Wastewater (one of 15 categories) received a D- for poor infrastructure

•Aging wastewater management systems discharge billions of gallon of
untreated sewage into U.S. surface waters each year - there are an
estimated 70,000 sewage spills each year

•EPA estimates the nation must invest $390 Billion over the next 20 years
- that’s $19.5 Billion each year

•Government funds to finance infrastructure are scarce

•Estimates that 6 billion gallons of water are lost each day due to leaking
pipes and mains

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Sinkholes

Overflows

Infiltration

Disease

•A substantial portion of the underground infrastructure has
now outlasted its useful life.

•There is ample evidence that the historical approach to
maintaining underground infrastructure cannot keep pace
with today’s needs.

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Insituform’s Core Business

• Invented the cured-in-place
pipe industry in 1971

• Ranked #1 wastewater
specialty contractor by
Engineering News Record

•Ranked #2 behind GE in water
industry by ChangeWave Alliance
survey

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Market Diversity

•Industrial Pipe Rehabilitation

–United® Pipeline Systems/Tite Liner
®

–Crude oil & mining

•Drinking Water Rehabilitation

–Insituform Blue™ offers a portfolio of
solutions that increase flow capacity,
improve water quality and reduce water
loss

•International Expansion

–Asia, Eastern Europe, Australia

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International Expansion

•Top 5 global growth markets for water and wastewater
are China, India, Mexico, Egypt and Australia

•Top 5 global markets expected to grow at compound
annual growth rate (CAGR) of 22.2%

•Booz Allen Hamilton reports that the world’s urban water
infrastructure needs an investment of $22.6 trillion. Over
80 percent of this is expected to be spent in areas other
than the United States. 

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Insituform has operations and licensees in
over 40 countries across the globe

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•Insituform is focusing on high growth in international
markets

•Insituform, sometimes in conjunction with local
partners, is currently working on and/or pursuing
projects in:
          

•India

•China

•Romania

•Poland

•Hungary

•Australia

•Japan

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Industry Innovation

•Insituform is continuing to lead innovation in
sewer, water and industrial pipeline
rehabilitation 

–iPlus Composite™

–iPlus Infusion™

–Insituform Blue™

–United® Pipeline Systems - Tite Liner®

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•iPlus Composite™
reinforced pipe for
medium and large
diameters

–Stronger and better
for the environment

•iPlus Infusion™
next-generation
pipe for small
diameters

–Safer and more
reliable in the field

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•Water scarcity

–Leaking pipes (20% to 60%)

–Unprecedented droughts

•Huge population growth in countries like India and
China

•Tightening global standards

–EU - Asbestos pipes, environmental regulations

•Estimated global market size - $7 trillion+ over 20
years

•Early stage market with low competition

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iTAP™

PolyFlex™

PolyFold™

Thermopipe®

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CBS Evening News

Infrastructure Making Headlines

•Bridge collapse in Minneapolis

•Steam pipe explosion in
    New York City

•   Infrastructure Problems - 
   CBS Evening News with
   Katie Couric

•Sinkhole swallows home in
    Guatemala

•India raising infrastructure
    spending

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•  Operational Excellence

•  Technological Innovation

Continuing the Strategy

•Growth