![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. Several men standing beside a giant partially constructed sewer pipe.](https://waterhistoryphl.org/wp-content/uploads/Mill-Creek-Sewer_20040920079_300dpi.jpg?w=300)
![](https://waterhistoryphl.org/wp-content/uploads/frankford-bridges-CA-20040330117.jpg?w=300)
Bridge Street Draw, Cofferdam, ca. 1896
![PWD water tech at the Philly Home Show, 1960](https://waterhistoryphl.org/wp-content/uploads/20041050194_crop2-scaled.jpg?w=300)
PWD water tech at the Philly Home Show, 1960 (detail)
![Lab tech at Philly Home Show, 1960](https://waterhistoryphl.org/wp-content/uploads/OriginalPhoto_20041050194-scaled.jpg?w=300)
Lab tech, water cleaning demo, Philly Home Show, 1960
![Torresdale Conduit work gang, 1906](https://waterhistoryphl.org/wp-content/uploads/D.5_FINAL_1986.002.2546_crop-1-scaled.jpg?w=300)
Torresdale Conduit work gang, 12/18/1906
![Nine visiting nurses ready for work, ca. 1909](https://waterhistoryphl.org/wp-content/uploads/B.5_FINAL_Nurses_6_edit_crop.jpg?w=300)
Nine visiting nurses ready for work, ca. 1909
![Immigrant family, ca. 1900](https://waterhistoryphl.org/wp-content/uploads/A.5a_FINAL_Nurses_15-scaled.jpg?w=300)
Immigrant family, ca. 1900, nurse in black
![Photo of a woman looking at a jar of raw, untreated sewage](https://waterhistoryphl.org/wp-content/uploads/DR_SewageJar.jpg?w=300)
Jar of raw sewage before treatment, 2000
![](https://waterhistoryphl.org/wp-content/uploads/Interceptor-Tour-2004.087.0010_reduced.jpg?w=300)
City officials tour new interceptor sewer, 1953
![Photo of Allegheny Avenue Sewer, Pier 126, Delaware River, July 15, 1918](https://waterhistoryphl.org/wp-content/uploads/Pier126-Sewer-AlleghenyAvenue-20040920279-1.jpg?w=300)
Allegheny Avenue Sewer at Pier 126, 1918
![Two black-and-white photographs of pipeline construction on State Road. Depicted are a group of people, trees, buildings, a fire hydrant and a grid of boards over the pipes.](https://waterhistoryphl.org/wp-content/uploads/StateRoad_19860021496_97.jpg?w=300)