Jar of raw sewage before treatment, 2000
Northeast Sewage Plant opening, 1951
Southeast Sewage Treatment Works diagram, 1955
City officials tour new interceptor sewer, 1953
Plan for the Collection, Treatment and Disposal of Sewage, 1914
Pennypack Sewage Treatment Works, 1914
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
Bingham Street Sewer, East of Tacony Creek, 1921
Water Before and After Roxborough
State Road triple pipeline construction, 1904