Subjects Filtration

Fairmount Water Works: The Surprising History of an American Landmark

Image shows three bottles of water, one clear, one dark and one with sediment floating in it.

Bottled vs. Tap in 1906

Oak Lane Reservoir pipeline, 1904

The Water and Drainage History of Philadelphia: A seven-part course

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

Water Before and After Roxborough