State Street pipeline construction, 1904
Belmont Filters construction, 1903
Finished Upper Roxborough filters, 1903
Upper Roxborough filter beds under construction, July 1902
Commencement of laying the main on the East side of the River, 1871
City officials tour new interceptor sewer, 1953
Devereaux Street Sewer, Philadelphia magazine, 1911
Sewer construction, Rock Run, 1922