![](https://waterhistoryphl.org/wp-content/uploads/1912-sewage-treament-report-frontispiece.jpg?w=300)
![](https://waterhistoryphl.org/wp-content/uploads/1912-sewage-treament-report-frontispiece.jpg?w=300)
![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 brick sewer outlet that drains into a creek with trees and a hill behind it](https://waterhistoryphl.org/wp-content/uploads/thomas-run-sewer-outlet-at-cobbs-creek.jpg?w=300)
Thomas Run sewer outlet at Cobbs Creek
![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 showing sewer outlet, retaining walls and body of water](https://waterhistoryphl.org/wp-content/uploads/cohocksink-sewer-system-outlet-at-laurel-street.jpg?w=300)
Cohocksink Sewer System outlet at Laurel Street
![The Pennypack Sewage Treatment Works in 1914](https://waterhistoryphl.org/wp-content/uploads/DR_PennypackWorks1914rpt119.jpg?w=300)
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