![A Roman aqueduct in Segovia, Spain, 2006](https://waterhistoryphl.org/wp-content/uploads/Roman-Aqueduct-Segovia-Spain.jpg?w=300)
![A Roman aqueduct in Segovia, Spain, 2006](https://waterhistoryphl.org/wp-content/uploads/Roman-Aqueduct-Segovia-Spain.jpg?w=300)
![Black-and-white image showing a man standing in a large concrete half-pipe](https://waterhistoryphl.org/wp-content/uploads/thomas-run-sewer-outlet-under-construction.jpg?w=300)
Thomas Run sewer outlet during construction
![Black-and-white image of workers in a pit with a sewer opening behind them and text](https://waterhistoryphl.org/wp-content/uploads/Frankford-Creek-sad-history-snip.jpg?w=300)
Frankford Creek: Sad History of an Urban Stream title page
![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
![Cumberland Street pipeline, 1907](https://waterhistoryphl.org/wp-content/uploads/D.4b_FINAL_1986.002.2491_crop-scaled.jpg?w=300)
Bureau of Water, Cumberland, west of 13th Street, pipe line, 1907
![Oak Lane Reservoir pipeline, 1904](https://waterhistoryphl.org/wp-content/uploads/D.4a_FINAL_1986.002.1635_crop-scaled.jpg?w=300)
Oak Lane Reservoir pipeline, 1904
![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
![Finished Upper Roxborough filters, 1903](https://waterhistoryphl.org/wp-content/uploads/D.1b_FINAL_1986.002.1032-1-scaled.jpg?w=300)
Finished Upper Roxborough filters, 1903
![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
![Duplex Pumping Engine, Belmont Works](https://waterhistoryphl.org/wp-content/uploads/2004.057.0074.002-1-scaled.jpg?w=300)
Duplex Pumping Engine, Belmont Works
![DeLaval Beauty Shots 6](https://waterhistoryphl.org/wp-content/uploads/20040570236075-1-scaled.jpg?w=300)