Philadelphia, PA Environmental Rules: Stormwater Management (2026)
Key Facts
- Governing provision
- Phila. Code § 14-704(3)
- Enforcing agency
- Philadelphia Water Department
- Review deadline
- 45 days or deemed approved
- Exemption
- Lots in pre-approved subdivision systems
Summary
Any zoning or building permit for earth-disturbing development in Philadelphia requires Water Department approval of a stormwater management plan reducing water pollution risk.
These standards apply in all zoning districts to earth disturbances that create a significant risk of water pollution from stormwater runoff, erosion, or sedimentation... No zoning or building permits shall be issued unless the Water Department confirms that the proposed activity and related stormwater management plan complies with the regulations of the Water Department designed to reduce the risk of water pollution.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 Code: Electronic version of The Philadelphia Code and Home Rule Charter is current through August 19, 2026).
Full Breakdown
Philadelphia's Zoning Code requires a Water Department-approved stormwater management plan before the Department of Licenses and Inspections can issue a zoning or building permit for any earth disturbance that risks water pollution from runoff, erosion, or sedimentation. The Water Department sets, by regulation, the disturbance threshold that triggers review, and must approve or deny the plan within 45 days of submission: if it misses that window, the plan is deemed approved. Development on individual lots within a larger subdivision that already has an approved stormwater system is exempt, as is any parcel governed by the separate Waterways Overlay stormwater rules under § 14-510.
Violations & Fines
Building without Water Department stormwater plan approval blocks permit issuance; Licenses and Inspections cannot legally issue a zoning or building permit until it clears.
Frequently Asked Questions
Does every construction project in Philadelphia need a stormwater plan?
What happens if the Water Department doesn't respond to a stormwater plan?
Which permits are blocked without an approved stormwater plan?
Sources & Official References
Other rules in Philadelphia
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