Still photo from a video sewer inspection, 2000
PWD Drinking Water Treatment diagram
Mill Creek Sewer under construction, 1883
Fairmount Gardens with the Schuylkill Bridge, 1839
Steam engine drawing, Frederick Graff Sr., 1815
Wooden Water Pipe, removed from Market Street, December 6, 1901
Main Pumping Stations for Philadelphia Drinking Water
The Water Works in Centre Square, Philadelphia
Map of Philadelphia showing Population in year 1920
Map of the County of Philadelphia from Actual Survey, 1843