4 county-level rules, plus city-specific rules for 1 city in Philadelphia County, Pennsylvania.
Verified from official government sources
Philadelphia Water Department (PWD) Stormwater Regulations require Green Stormwater Infrastructure (GSI) for any project disturbing 15,000+ sq ft or creating 15,000+ sq ft impervious.
Philadelphia requires Erosion and Sediment Control plans approved by PWD and Philadelphia Conservation District for earth disturbances of 5,000+ sq ft, per PA Chapter 102.
Philadelphia straddles the Schuylkill and Delaware Rivers with extensive FEMA Special Flood Hazard Areas. Floodplain construction regulated by Phila Code Title 14-704 and PWD.
FEMA Flood Map Service Center (MSC) - NFIP
The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard information produced in support of the National Flood Insurance Program (NFIP). Use the MSC to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk. FEMA flood maps are continually updated through a variety of processes. E...
Philadelphia grading work requires L&I site/grading permits. Drainage must connect to PWD sewer system; no discharge to neighbors. Combined sewer system requires stormwater controls.
1 cities in Philadelphia County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Philadelphia County — parking, noise, fences, fires, animals, pools, and more.
Philadelphia County Ordinance Hub →