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Water History: Making It Safe to Drink
PWD Drinking Water Treatment diagram
Car 2615, Brill, 1909, Brill Curtis trucks
Ash dumping house, 2nd floor, 15th and Wood St.
Ash car 2618, later P-9 and W-29, PRT, 1908, Curtis C-1112 trucks
PWD water tech at the Philly Home Show, 1960 (detail)
Diagram showing heights of reservoirs, dams, standpipes &c, 1894
Laboratory Alkalinity test, ca. 1943
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
State Road triple pipeline construction, 1904
Upper Roxborough Filter Beds Complete, 1903
Upper Roxborough Filter Bed Construction, 1902