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The District Sewer Pipe feature class consists of lines depicting District owned/maintained gravity and pressure mains. A sewer pipe is a type of an underground carriage system, for transporting sewage from houses or industries to treatment or disposal. In some areas, sanitary sewers are separate sewer systems specifically for the carrying of domestic and industrial wastewater, and are operated separately and independently of storm drains, which carry the runoff of rain and other water which wash into city streets. Sewers carrying both sewage and stormwater together are called combined sewers. |