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Pipe Renewal: Investing in the Future

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The Need for Investment in our Sewer System

Our sewer system in Saint Paul is aging rapidly -- most of the system is at least 50 years old, and nearly half of it is 75-125 years old.  Conventional "dig-and-replace" rehabilitation of failing and fragile sewer lines is very expensive, disruptive to property owners, cumbersome and labor intensive.

Cured-in-Place Pipe

To maintain the integrity of our system and at the same time address the challenges inherent in sewer replacement, the Sewer Utility Division relies on a process that is known in the construction industry as cured-in-place pipe (CIPP) renewal.  Cured-in-place pipe technology involves the use of a resin-coated polyester tube that is pulled through the existing pipe and is then cured with the use of steam or hot water.  The curing forms a jointless, seamless pipe within a pipe.

This process addresses broken and failing pipe, reduces infiltration and intrusion, results in minimal excavation and is environmentally friendly, making it much less expensive than the dig-and-replace method.

Learn more about the CIPP Process

CIPP Do's and Don't's for Property Owners

CIPP Project Index Maps

Completed or near completion city-wide sewer lining projects to date

Baker Brown Lining Project

Westside Lining Project

Burns Park Lining Project

Juno Watson Lining Project
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