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Historic resources from our archives - images, maps, documents, and more.
Last gasp of the Schuylkill Interceptor, December 20, 1956
Diagram from sewage treatment plan for Philadelphia, 1912
Southwest Sewage Treatment Plant under construction, 1949
Emscher Tank Installation at Essen Nord, Germany
Drain water from sludges obtained from sedimentation, septic and Emscher tanks
Thomas Run sewer outlet at Cobbs Creek
Wastewater Treatment Process diagram