


PWD Drinking Water Treatment diagram

“Speeding the Parting Guest,” Feb. 25, 1909

“A Decidedly Mixed Drink,” April 6, 1899

Bacteria in Delaware River, Torresdale Filters, 1913

Belmont Filters construction, 1903

Finished Upper Roxborough filters, 1903

Upper Roxborough filter beds under construction, July 1902

A.C. Abbott, MD

McConnell Germ-Proof Filters ad

Water Before and After Roxborough
