Subjects Water Treatment

McDonnell filter advertisement

McConnell Germ-Proof Filters ad

Spring Garden water testing lab, 1901

Bureau of Water Spring Garden Testing Station, 1901

Black and white image of Philadelphia civic and business leaders watching the start of operations at the new Northeast Sewage Treatment Plant, April 6, 1951

Northeast Sewage Plant opening, 1951

Centerfold of 1955 brochure depicting the Southeast Sewage Treatment Works

Southeast Sewage Treatment Works diagram, 1955

Spring Garden Sewage Experiment Station, used to test water filtration methods

Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911

Two bottles of water from a river, one dark with pollution and one clear after filtration

Water Before and After Roxborough

Black-and-white photograph showing the completed Upper Roxborough Filter system. Vaulted concrete ceiling with beds of filter sand.

Upper Roxborough Filter Beds Complete, 1903