


Plan of Pine Street Sewer, 1830

Mill Creek Sewer under construction, 1883

Bridge Street Draw, Cofferdam, ca. 1896

Pennsylvania Hospital in Pine Street

Torresdale Conduit work gang, 12/18/1906

Finished Upper Roxborough filters, 1903

Outhouse over the Schuylkill near Pottstown

Northeast Sewage Plant opening, 1951

City officials tour new interceptor sewer, 1953

Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
