Stormwater Capacity Grants Program
Forecasted
Stormwater Capacity Grants Program supports Washington cities and counties with stormwater management work, staff training, and equipment to carry out municipal stormwater permit requirements.
Funder: Washington State Department of Ecology
Due Dates (Anticipated): September 2027 (Applications close)
Funding Amounts: 2025–27 limit: $120,000 per eligible recipient; no match required; reimbursement funding
Summary: Non-competitive grants support activities and equipment needed to implement Washington municipal stormwater permit requirements.
Key Information: Only permitted Washington cities and counties may apply directly; secondary permittees may participate through partnerships.
Description
The Washington State Department of Ecology’s Stormwater Capacity Grants Program supports implementation of National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater General Permits. Administered through Ecology’s Water Quality Program, this non-competitive funding assists cities and counties covered by the Phase I, Western Washington Phase II, or Eastern Washington Phase II permits.
The program funds practical stormwater management work, including staff time, training, supplies, and specialized equipment tied to permit requirements. Supported activities include public education, illicit discharge detection and elimination, runoff control, maintenance, annual reporting, and permit-required monitoring. The emphasis is on implementing municipal permit programs, rather than capital construction or projects unrelated to permit compliance.
