Half a Century of Clean Water: The Clean Water Act, 1972-2022
“Philadelphia Underground,” Jan. 29, 1961
State Street pipeline construction, 1904
Water Works Standpipe, 1853
State Road triple pipeline construction, 1904
Pipes, distribution mains, transmission mains, filtration plants, pumping stations, and all other appurtenances, either above or underground, that relate to providing drinking water to homes and businesses. In tandem with sewer systems, properly-designed water supply systems are what make densely-populated urban areas possible.