![Aqueduct carrying sewer over Creishem Creek, in the Wissahickon Valley, 1892](https://waterhistoryphl.org/wp-content/uploads/Cresheim-Aqueduct-Sewer-CA-Misc148.jpg?w=300)
![Aqueduct carrying sewer over Creishem Creek, in the Wissahickon Valley, 1892](https://waterhistoryphl.org/wp-content/uploads/Cresheim-Aqueduct-Sewer-CA-Misc148.jpg?w=300)
![Southwest Sewage Treatment Plant under construction, 1949 (from Water & Sewer Course Module 7)](https://waterhistoryphl.org/wp-content/uploads/Southwest-Plant-1949-2004.093.0005.jpg?w=300)
Southwest Sewage Treatment Plant under construction, 1949
![Black and white photo of a man wearing a hat and standing on a bridge with his arm on a post](https://waterhistoryphl.org/wp-content/uploads/frankford-bridges-CA-20040330242.jpg?w=300)
Two Frankford Creek Bridges, 1896-1899
![Pen and ink drawing of the proposed Delaware Seventh Street Sewer](https://waterhistoryphl.org/wp-content/uploads/Sewer-Connection-1850-20050020525-200dpi.jpg?w=300)
Plan and profile of proposed Delaware Seventh St. Sewer, 1850
![1830 plan for the Pine Street Sewer](https://waterhistoryphl.org/wp-content/uploads/PineStreetSewer_20040920273.jpg?w=300)
Plan of Pine Street Sewer, 1830
![A section of wooden water pipe, long out of service, removed from a Philadelphia street in 1901. It had been installed about 1801.](https://waterhistoryphl.org/wp-content/uploads/WoodenPipe-1801-1901.jpg?w=300)
Wooden Water Pipe, removed from Market Street, December 6, 1901
![Black and white photo showing a wooden truss bridge over a creek](https://waterhistoryphl.org/wp-content/uploads/20040330240.jpg?w=300)
Wood truss drawbridge, Orthodox Street over Frankford Creek, rebuilt 1899
![Black and white photo of square archways over a bridge](https://waterhistoryphl.org/wp-content/uploads/20040330130.jpg?w=300)
Bridge Street Draw, view through bridge, July 26, 1897
![Black and white image of a drawbrige partially opened with water to the left of it](https://waterhistoryphl.org/wp-content/uploads/20040330129.jpg?w=300)
Bridge Street Draw, draw partly open, July 26, 1897
![Black and white photo of a drawbridge over a creek, partially opened](https://waterhistoryphl.org/wp-content/uploads/20040330128.jpg?w=300)
Bridge Street Draw with draw open, July 26, 1897
![Black and white photo of a low bridge over a creek](https://waterhistoryphl.org/wp-content/uploads/20040330127.jpg?w=300)
Bridge Street Draw, July 26, 1897
![Black and white photo of several men in the foreground, some wearing hats, and a few others standing behind them on a wooden bridge](https://waterhistoryphl.org/wp-content/uploads/20040330125.jpg?w=300)