Typical house drainage Drawing showing house drainage connections for separate and combined sewer systems InfrastructureSanitationSewers & Drainage Item Type Technical Drawing Publisher Philadelphia Water Department Topics InfrastructureSanitationSewers & Drainage Subjects ArchitectureCombined SewerDrainageHome PlumbingSewers & Drainage Temporal Coverage 1930 (Circa) 1930-1940 Identifier2008.001.0032 Collection Philadelphia Water Department
