Girard Avenue Bridge, Fairmount Park, 1895
Diagram from sewage treatment plan for Philadelphia, 1912
Queen Lane Pumping Station, proposed design
Listening for leaks
Centre Square Water Works, Frederick Graff, Sr. Plans, 1799
Pipeline being laid in Wissahickon Avenue
Dauphin and Sydenham car crash, Jan. 17, 1978
Images from ‘The Water Supply of the City of Philadelphia by a proposed Aqueduct from Norristown Dam’
Still photo from a video sewer inspection, 2000
PWD Drinking Water Treatment diagram