Finished Upper Roxborough filters, 1903
Outhouse over the Schuylkill near Pottstown
Nine visiting nurses ready for work, ca. 1909
McConnell Germ-Proof Filters ad
Bureau of Water Spring Garden Testing Station, 1901
Immigrant family, ca. 1900, nurse in black
Jar of raw sewage before treatment, 2000
Northeast Sewage Plant opening, 1951
City officials tour new interceptor sewer, 1953
Allegheny Avenue Sewer at Pier 126, 1918