NPDES Stormwater Management Program

2018 Draft Stormwater Management Plan for Public Review:

Bellevue residents will have an opportunity to comment on the city’s 2018 Draft Stormwater Management Plan plan during the Environmental Services Commission meeting at 6:30 p.m., Thursday, Feb. 1, at City Hall, 450 110th Ave. NE, conference room 1E-113. Alternatively comments can be emailed to

The National Pollutant Discharge Elimination System program addresses water pollution by regulating sources that discharge pollutants into natural bodies of water such as Lake Washington and Coal Creek. The Environmental Protection Agency authorizes state governments to perform permitting, administration and enforcement of the program.

Each year Bellevue must submit a stormwater management plan to the state Department of Ecology that describes actions the city will take in the upcoming year to meet federal water quality protection requirements. Bellevue is one of more than 100 communities in Washington that must meet requirements for its National Pollutant Discharge Elimination System Phase II municipal stormwater permit.

All comments received on the draft plan will be considered before it is approved for submittal to Ecology

Stormwater Management Program

To protect water quality, Bellevue manages stormwater runoff in a number of ways. The city follows "best management" practices and operates under a National Pollutant Discharge Elimination System Phase II Municipal Stormwater Permit issued by the state Department of Ecology in January 2007. This permit is a requirement of the Federal Clean Water Act.

The best management practices in the permit are collectively referred to as the NPDES Stormwater Management Program. They include actions that educate the public and encourage non-polluting behaviors:

  • Identify and report illegal dumping and cross-connections;
  • Respond to pollutant spill reports;
  • Enforce erosion and sediment control at construction sites;
  • Apply new design standards for permanent storm drainage in new development and redevelopment sites;
  • Maintain the public storm drainage system and inspect private storm drainage systems;
  • Minimize pollution from municipal operations.

Bellevue is required to report on these actions through an annual report and accompanying stormwater management plan. Details of the required actions can be found in the annual NPDES Reports.

Western Washington Phase II Municipal Stormwater Permit

NPDES Annual Reports:

For more information about stormwater management, see Bellevue Stormwater Guide

Business Resources:

The following posters below are available FREE to Bellevue businesses. To request copies, please contact us at or 425-452-6932.

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