National Pollutant Discharge Elimination System

Additional Information

The links below will help you find out more about the county’s NPDES municipal stormwater permit, what the county does to meet permit requirements and how you can get involved:

• NPDES stormwater permit background
• Required actions under the NPDES municipal stormwater permit
• How to provide input on stormwater management activities and programs
• Stormwater Management Program (SWMP) Plans and annual reports
• NPDES-related county codes, county engineering design and development standards (EDDS), and the county Drainage Manual
• How to report a water pollution problem
• General information about stormwater. The following documents contain information about stormwater and stormwater-related problems:
  • Protecting Washington’s waters from stormwater pollution (WA Department of Ecology)
  • Control of Toxic Chemicals in Puget Sound - Phase 1: Initial estimate of toxic chemical loadings to Puget Sound (WA Department of Ecology / US EPA / Puget Sound Partnership)

In addition to the NPDES municipal stormwater permit, the county also operates under NPDES industrial stormwater permits (applicable to some county solid waste facilities and Paine Field) and NPDES construction stormwater permits (applicable to some county construction projects). This web page and its subpages focus on the municipal stormwater permit.