![1830 plan for the Pine Street Sewer](https://waterhistoryphl.org/wp-content/uploads/PineStreetSewer_20040920273.jpg?w=300)
![1830 plan for the Pine Street Sewer](https://waterhistoryphl.org/wp-content/uploads/PineStreetSewer_20040920273.jpg?w=300)
![Mill Creek Sewer under construction. Several men standing beside a giant partially constructed sewer pipe.](https://waterhistoryphl.org/wp-content/uploads/Mill-Creek-Sewer_20040920079_300dpi.jpg?w=300)
Mill Creek Sewer under construction, 1883
![Black-and-white photo of industrial tank installation with smokestacks and factories in the background](https://waterhistoryphl.org/wp-content/uploads/emscher-tank-essen-nord-germany.jpg?w=300)
Emscher Tank Installation at Essen Nord, Germany
![Black-and-white image of a tray with three compartments and four small glass cylinders](https://waterhistoryphl.org/wp-content/uploads/drain-water-from-sludges-emscher-tank.jpg?w=300)
Drain water from sludges obtained from sedimentation, septic and Emscher tanks
![Philadelphia Underground, Jan. 29, 1961](https://waterhistoryphl.org/wp-content/uploads/The_Philadelphia_Inquirer_Sun__Jan_29__1961_-scaled.jpg?w=300)
“Philadelphia Underground,” Jan. 29, 1961
![30th Street Sewer](https://waterhistoryphl.org/wp-content/uploads/18B-876-scaled.jpg?w=300)
30th Street Sewer
![State Street pipeline construction](https://waterhistoryphl.org/wp-content/uploads/D.3ab_FINAL_1986.002.1496-97.jpg?w=300)
State Street pipeline construction, 1904
![Upper Roxborough filter beds](https://waterhistoryphl.org/wp-content/uploads/D.1a_FINAL_1986.002.0660-61-62-1.jpg?w=300)
Upper Roxborough filter beds under construction, July 1902
![Rudolph Hering](https://waterhistoryphl.org/wp-content/uploads/C.5b_FINAL_RudolphHering03.jpg?w=300)
Rudolph Hering
![Standard Philadelphia (B) Hydrant (2004.057.022.1075)](https://waterhistoryphl.org/wp-content/uploads/20040570221075-scaled.jpg?w=300)
Standard Philadelphia (B) Hydrant
![Drawing in blue ink on beige paper depicting reservoir, dam and standpipe heights](https://waterhistoryphl.org/wp-content/uploads/2009.008.0007_edit-scaled.jpg?w=300)
Diagram showing heights of reservoirs, dams, standpipes &c, 1894
![Sewage collection and disposal plan](https://waterhistoryphl.org/wp-content/uploads/2008.001.0055_edit-scaled.jpg?w=300)