Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912 Colorful sewage purification and disposal plan for the City, dated 1912. InfrastructureSanitationTechnology & Engineering Date Created 1912 Item Type ImageTechnical Drawing Publisher Philadelphia Water Department Topics InfrastructureSanitationTechnology & Engineering Subjects Combined SewerEngineeringInfrastructureSewer PipesSewers & Drainage Temporal Coverage 1912 (Known) 1850-1900 Waterway Schuylkill River Watershed Schuylkill River Watershed Neighborhood All of Philadelphia Place Philadelphia File Size698 kbImage Dimensions2560 x 1399 px Identifier2008.001.0055 Collection Philadelphia Water Department Rights Holder Philadelphia Water Department