Upper Roxborough filter beds under construction, July 1902
Outhouse over the Schuylkill near Pottstown
Engine House of the Belmont Works
Electric Pump Installations at Lardner’s Point Pumping Station
Pipe Test, 1914
Northeast Sewage Plant opening, 1951
City officials tour new interceptor sewer, 1953
Pennypack Sewage Treatment Works, 1914
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
Bingham Street Sewer, East of Tacony Creek, 1921
