Item Types Photograph

Any images made from a photographic print or negative, including stereoviews, glass or film negatives, tintypes, daguerreotypes, and other photographic processes.

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

Jar of raw sewage before treatment, 2000

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

City officials tour new interceptor sewer, 1953

The Pennypack Sewage Treatment Works in 1914

Pennypack Sewage Treatment Works, 1914

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

Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911

Man standing in front of Bingham Street Sewer, 1921

Bingham Street Sewer, East of Tacony Creek, 1921

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

Water Before and After Roxborough

Two black-and-white photographs of pipeline construction on State Road. Depicted are a group of people, trees, buildings, a fire hydrant and a grid of boards over the pipes.

State Road triple pipeline construction, 1904

Eleven men in a work gang plug leaks in a tunnel, the Torresdale Conduit

Torresdale Conduit work gang, 1906

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

1902 photo of Upper Roxborough Filter beds under construction

Upper Roxborough Filter Bed Construction, 1902

Jonval Turbines at New Mill House, 1870