Stillwater Runs PVC Pipe to Replace Failed Sewer Line  11/08/09

Stillwater Water Utilities workers is using PVC pipe to replace a deteriorated 8-inch sewer line, to be completed by August 2010.

Anthony Daniel, city water utilities director, said, "The project is urgent. It should have been done yesterday," which also includes the replacement of 15 manholes, in an area that affects about 80 homes.

The line being replaced is vitrified clay pipe which was installed in the early 1950s. Cracking, invasive tree roots, and ongoing issues with the line have necessitated the project, which will begin by running a camera through the line and examining the pipe.

In March, PVC pipe was used to replace a broken sewer line that dumped 1,000 gallons of sewage into Duck Creek near Oklahoma State University. In June, PVC pipe replaced broken clay pipes that had caused 500,000 gallons of wastewater to escape from a leaking sewer line near Stillwater High School for about a week, discovered when residents complained of the pungent smell.
Daniel estimates 70 percent of the city's pipes are made from clay and have deteriorated beyond their service life.

City officials cite PVC pipe for the latest replacement project because of its strength, durability, and resistance to the growth of bacterial contamination.