Joe Cerrone, Inspector, Industrial Waste Unit, PWD, enters storm drain to search for source of oil spill, 1989
Sewer worker Anthony Holston enters sewer, 1990
Manholes like this give access to city’s sewer system, 1961
Sewer Inspections: Vintage Images
Emscher Tank Installation at Essen Nord, Germany
State Street pipeline construction, 1904
Upper Roxborough filter beds under construction, July 1902
Outhouse over the Schuylkill near Pottstown
Standard Philadelphia (B) Hydrant
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912