Topics Water Supply

Black-and-white image of two cylinders on a white surface

Effects of Expansion of Gas Bubbles in Enscher Sludge Shown in Right-Hand Cylinder

State Street pipeline construction

State Street pipeline construction, 1904

Belmont Filters construction 1903

Belmont Filters construction, 1903

Upper Roxborough filter beds

Upper Roxborough filter beds under construction, July 1902

Rudolph Hering

Rudolph Hering

Outhouse over Schuylkill near Pottstown

Outhouse over the Schuylkill near Pottstown

Photo of a woman looking at a jar of raw, untreated sewage

Jar of raw sewage before treatment, 2000

Swimmers at Pier 126, Delaware River July 15, 1918

Swimmers at Pier 126, Delaware River, July 15, 1918

Photo of Allegheny Avenue Sewer, Pier 126, Delaware River, July 15, 1918

Allegheny Avenue Sewer at Pier 126, 1918

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

Water Before and After Roxborough

1902 photo of Upper Roxborough Filter beds under construction

Upper Roxborough Filter Bed Construction, 1902