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City of Philadelphia

Stormwater Grants

The City of Philadelphia, through the Philadelphia Water Department (PWD) and Philadelphia Industrial Development Corporation (PIDC), has created the Stormwater Management Incentives Program (SMIP) and the Greened Acre Retrofit Program (GARP) to reduce the price for qualified non-residential PWD customers and contractors to design and install stormwater best management practices. These practices reduce stormwater pollution to the City’s sewer and surrounding waterways and enhance water quality in the region’s watersheds.

SMIP provides grants directly to non-residential property owners who want to construct stormwater retrofit projects.

provides grants to contractors, companies or project aggregators who can build large-scale stormwater retrofit projects across multiple properties.

More information about these programs can be found in the Stormwater Incentives Grant Manual and FAQ.


SMIP projects are evaluated based on a variety of criteria, including total volume of stormwater managed, cost competitiveness and other environmental and educational benefits. Competitive applications will limit grant requests to $100,000 or less per impervious acre and manage at least the first 1” of runoff. Payments may not exceed the actual cost for the design and installation of the project. Applicants must be the property owner, PWD customer or tenant with permission from the property owner. All recipients will be expected to execute an Economic Opportunity Plan or comply withthe City's Antidiscrimination Policy relating to Minority (MBE), Woman (WBE) and Disabled (DSBE) Owned Business Enterprises. Recipients must also sign an Operations and Maintenance Agreement as part of the subgrant agreement. Once the stormwater project is constructed, recipients will be eligible for credits against their stormwater charge.


GARP funding is available to companies or project aggregators who are able to develop a stormwater management plan on properties that total at least 10 acres in project size located in Philadelphia’s combined sewer service area only. The aggregator will be the direct recipient of funds but must provide agreements or contracts with all participating property owners as part of the grant application. All property owners must execute an Operations and Maintenance Agreement with PWD, and the project aggregator must execute an Economic Opportunity Plan as part of the subgrant agreement. Competitive applications will reduce costs to PWD as much as possible. Once the project is constructed, participating property owners (or customers) will be eligible for credits against their stormwater charges.

Questions about the grant programs can be directed to Erin Williams via email [] or by calling 215-685-6070.


Applications for both SMIP and GARP can be submitted at any time. Announcements will be made towards the end of each fiscal quarter, which ends on June 30th of each year. Applications not selected in a particular round will have the opportunity to be considered in the next round without having to resubmit. Applications for both programs will be available through PIDC on their Development and Contract Opportunities page. Applications must be submitted via CD-ROM or flash drive to PIDC.



Stormwater Contacts

Stormwater Billing