Stormwater NPDES Program

Pollutants carried in stormwater runoff are quickly becoming a leading cause of water pollution in rivers and lakes.  The Urban Growth Area of Wenatchee falls under the National Pollutant Discharge Elimination System (NPDES) Phase II requirements which require a specific set of actions to meet these Clean Water Act mandates.  Chelan County is required to get a stormwater quality permit from the Department of Ecology for this service area under the NPDES regulations.   This NPDES Phase II planning area will have the same boundary as the new Chelan County stormwater utility. 

In February of 2007, the Washington State Department of Ecology issued the Eastern Washington Phase II Municipal Stormwater Permit to the City of Wenatchee, Chelan County, Douglas County and the City of East Wenatchee. This permit requires each jurisdiction to develop and implement a stormwater program with the goal of reducing the amount of pollution in stormwater.

To share resources and develop a consistent regional stormwater program, representatives from both cities and counties have been working together to meet the requirements of the permit. This group is called the Wenatchee Valley Stormwater Technical Advisory Committee (WVSTAC). Over the next five years the program will be developed and implemented. For the latest information regarding the Regional Stormwater Program, please visit the WVSTAC page.

Information is available about training courses to help determine which construction projects fall under the new construction stormwater general permit.  Please click here for the Erosion and Sediment Control Management Flyer.”

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