Stormwater Management

The City of Spokane is required to have a stormwater management plan that addresses stormwater quality and quantity issues and to comply with the Eastern Washington Phase II Municipal Stormwater Permit.

We seek to reduce pollution associated with stormwater and protect the Spokane Valley-Rathdrum Prairie Aquifer, the Spokane River, and other surface waters. The City funds its stormwater management program through the stormwater charge on residents' and businesses' monthly utility bills.

The City offers credits to commercial and industrial customers for some stormwater disposal and treatment facilities, including appropriate use of low-impact development (LID) techniques. Please call 509.625.7900 for more information.

MS4 (Municipal Separate Storm Sewer System)

Municipal stormwater general permits oversee the release of water from municipal storm drainage systems. These systems, managed by public entities like cities and counties, are distinct from sanitary sewers. Stormwater refers to the runoff from rain and melted snow that travels over surfaces like roofs, roads, and parking areas. During its journey, this water can gather pollutants that subsequently pollute nearby waterways.

Annual Stormwater Reports

Stormwater Management Program Plan