This PVC Pipe News article shows how the Avon Lake Municipal Utility installed a sanitary sewer pipeline inside an existing combined sewer. The result was a separated system. The title is "Avon Lake Municipal Utilities Combined Sewer Separation Project."

Case history of 30-inch PVC gravity sewer pipe installed at a depth exceeding 40 feet. Flexible pipe solves deep bury site conditions.

Project utilizing approximately 7 miles of 36-inch F-679 solid wall gravity sewer pipe.

PVC was selected to replace a large diameter, ductile iron, sanitary sewer line that failed prematurely due to internal corrosion. The article's title is "Rowlett, Texas Encounters Unexpected Sewer Line Repair."

This article "Dealing with Disaster" provides an overview of the construction of a 48-inch gravity sewer to replace failing infrastructure in Pima County.