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Water Supply
Hand-pumped fire engine, 1792
Fire equipment, late 18th century
Thomas Meehan, city councilman
Listening for leaks
Wooden Water Pipe, removed from Market Street, December 6, 1901
Bethlehem Water Works, 2011
Roman Aqueduct in Segovia, Spain
Sludge Drying Beds, Essen Nord, Germany
Effects of Expansion of Gas Bubbles in Enscher Sludge Shown in Right-Hand Cylinder
Thomas Run sewer outlet during construction
Frankford Creek: Sad History of an Urban Stream title page
PWD water tech at the Philly Home Show, 1960 (detail)
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