Water
History
PHL
Show/Hide Menu
Items
Articles
Topics
About
Blog
Show/Hide Search
Search!
Places
Philadelphia
Diagram from sewage treatment plan for Philadelphia, 1912
Thomas Run sewer outlet at Cobbs Creek
Delaware River at Arch Street from the New Jersey side, 1914
Bacteria in Delaware River, Torresdale Filters, 1913
Pennypack Sewage Treatment Works, 1914