Philadelphia Water Department

Stormwater Management

With every development in Philadelphia, we have the opportunity to improve stormwater management in the City. Development projects that disturb more than 15,000 square feet (5,000 square feet in certain watersheds) of earth trigger the PWD Stormwater Regulations, which require management of the first inch and a half of stormwater runoff.  Projects that trigger the Stormwater Regulations must have a proposed stormwater management design approved by PWD Stormwater Plan Review.

Learn more about Stormwater Management on the Philadelphia Water website.

Download our Stormwater Management Fact Sheet.

An example of green stormwater infrastructure in Philadelphia

The Value of Green

The sustainable tenants of the Green City, Clean Water program reflect the Philadelphia Water Department’s commitment to the environmental, economic and social growth of the City of Philadelphia.  We’re committed to investing in green infrastructure, not only to meeting our regulatory obligations but also to add value to the economic and social   The National Resources Defense Council  recently published a report documenting the triple bottom line benefits associated with green stormwater infrastructure.  Copies of the December 2013 report, “The Green Edge: How Commercial Property Investment in Green Infrastructure Creates Value” are available for download.