Visionary planning report for Philadelphia region, 1928
The Water Supply Problem of Philadelphia, 1899
Bacteria in Delaware River, Torresdale Filters, 1913
Perkiomen Water Supply Surveys, 1866
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.