PWD’s Lance Butler with an invasive flathead catfish
Joe Perillo with a large Schuylkill striper in 2015
Wastewater Treatment Process diagram
Jar of raw sewage before treatment, 2000
Southeast Sewage Treatment Works diagram, 1955
Plan for the Collection, Treatment and Disposal of Sewage, 1914
Water Before and After Roxborough
State Road triple pipeline construction, 1904
Upper Roxborough Filter Beds Complete, 1903