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Service Authority to Begin Lining Sewer Mains in Manassas

Provided by Prince William County Service Authority

The Prince William County Service Authority will begin performing important rehabilitation work on the sanitary sewer system in the Manassas area on Monday, Sept. 11.

The work will take place on Crestwood Drive between Ashton Avenue and Sudley Road. The work is expected to take approximately five weeks to complete. Because this rehabilitation work is ‘trenchless,’ there will be virtually no impact on traffic. The lining process is done in lieu of replacing the pipe itself, which is often a much more costly and disruptive measure for both customers and the utility.

Once completed, the resin-like substance used in the CIPP process hardens and essentially becomes a new pipe inside the existing sewer main. This protects the main from tree root intrusion and corrosion that can occur over long periods of time. CIPP also prevents groundwater infiltration into the sanitary sewer system during rain events, which helps reduce the amount of flow to the wastewater treatment plant.

The average sewer pipe lasts about 40 years, while CIPP can extend that lifespan to 90 years.

Each year, the Service Authority inspects more than a hundred miles of sewer line to determine where CIPP would be most effective. Since July of 2016, the Service Authority has lined nearly 12 miles worth of sewer main.

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