Topics Water Supply

CITIZENS’ BUSINESS: 1939-1946

Black-and-white image showing several cubic measurements of various types

Volume of Sludge from 1,000,000 Gallons of Sewage

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Diagram Showing Rate Between Bulk of Wet Sludge and Its Percentage Moisture

Black-and-white photo of a man standing in a long trench

Sludge Drying Beds, Essen Nord, Germany

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

Black-and-white image showing a man standing in a large concrete half-pipe

Thomas Run sewer outlet during construction

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Bacteria in Delaware River, Torresdale Filters, 1913

Diagram of the Philadelphia Water Department's wastewater treatment process

Wastewater Treatment Process diagram