Sanitary Sewer Lining as Part of the CMOM Program

The City of St. Charles is conducting a project to rehabilitate the sanitary sewers in your neighborhood. This project is part of the City’s Capacity, Management, Operation and Maintenance (CMOM) Sewer Plan. The overall intent of the CMOM plan is to eliminate groundwater infiltration into sanitary sewers which will help minimize sewer backups. The CMOM plan is a multi-year program designed to reinvest, rehabilitate and renew the sewer system.

Inspection and assessment of the sanitary sewer system in the SCO2 drainage area was recently completed and areas of the sewer pipe that are in need of repair were identified and inventoried for completion during this project. Hoerr Construction has been contracted by the City of St. Charles to complete the sewer restoration work.

A project map showing the sanitary sewer lines has been attached for your convenience. The sewer line highlighted in red will be lined as part of this project. Additional improvement projects within the SCO2 drainage basin will be coming in future years.

Sanitary Sewer Lining Project Map

The technology that will be used to repair and restore the sewer pipe is known as cured-in-place-pipe (CIPP). It is a trenchless process that involves inserting a flexible liner into the existing sewer and heating resin inside the liner to harden it in place. This means the sewer will be repaired without digging a trench to reach the pipe. This method eliminates dust related to construction, tree loss, prevents disturbance to the nearby lawn and landscaping, and avoids long-term traffic disruptions.

Helpful video of CIPP Lining process

However, during the lining project there may be some temporary inconveniences. The liner requires four hours to cure. During this time the sewer service to your home or business will be temporarily sealed off at the public main and will be out of service. We request you limit the use of water while your service is off line to reduce the risk of sewer backups and help ensure a better final product. The contractor will leave a door hanger 24-48 hours prior to beginning the lining work near your home. This notice will include the date and time the work is expected to be conducted. 

Herr Construction Door Notice

Additional Information

For additional information on this phase, please feel free to contact Public Works Environmental Services Group at 630-377-4405.

Active Project

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