The Wastewater Collection team is responsible for the operation and maintenance of the City’s sanitary sewer collection system. The collection system includes approximately 400 miles of sewer pipes, 9,161 manholes and 65 lift stations. System maintenance includes cleaning, mainline repairs, manhole rehabilitation, pump replacement and repairs, and response to customer service requests.
By using historical data and a variety of specialized cleaning equipment, the entire collection system is cleaned a minimum of every three years. Some line segments are cleaned more frequently due to tree roots, fats, oils, grease, and pipe condition. Maintenance needs of the collection system are determined by an internal video inspection of the pipes.
Wastewater Collection crews routinely inspect sewer main line conditions in the collection system utilizing closed circuit television equipment. Video inspections are performed to evaluate existing pipe conditions, verify cleaning efficiency, locate private sewer connections and provide justification for Capital Improvement Projects to repair or replace old and damaged sewer main lines.
A property owner’s private sewer line extends from the home’s foundation and includes its connection to the city sewer main. Property owners in the City of Prescott are responsible for the maintenance and repair of the private sewer lines up to and including the tap into the city main.
A backwater valve is a one-way valve that is installed on the building’s Private Sewer Line or the lateral sewer line. A properly installed and maintained backwater valve will prevent the lateral sewer line from backing up with sewage into the building. The requirements for installation can be found in City Code Title III, Chapter 30, Section P3008. In support of this code, all structures connected to the City sewer system require an approved backwater valve.
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