Subjects Intercepting Sewer

The pipe beneath the rocky path

Map Lovers’ Monday: Philadelphia in 1897, with color added

Fairmount Water Works in High Resolution

Aqueduct carrying sewer over Creishem Creek, in the Wissahickon Valley, 1892

Cresheim Aqueduct

State of the Schuylkill River in 1876: Sewage pollution and possible remedies

City officials tour new interceptor sewer, 1953