Valued at $US6.2 million, this is the largest trenchless sewer rehabilitation project in take place in the city’s history.

Insituform, who are undertaking the project, will use CIPP to rehabilitate nearly 40 km of wastewater pipelines up to 48 inches in diameter.

City of London Division Manger-Construction Administration Justin Lawrence said that CIPP was chosen because it reduces infiltration, restores structural integrity and increases flow capacity without disruption to communities. “The benefits are many – cost savings, because the road doesn't need to be excavated; minimized disruption (one day as opposed to four months); and the environmental benefits of not requiring new materials,” Mr Lawrence said.

City reports indicate the use of various trenchless technologies, including pipeline relining and repair, have resulted in cost savings of $US81 million over the last five years. This most recent project is expected to be completed by December 2010.

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Meanwhile, Insituform have been awarded a three year term contract by the City of Austin, Texas, in the United States. The project, valued at up to $US11.7 million, will use CIPP to rehabilitate sewer pipelines in residential, commercial and environmentally sensitive areas within the district.