National Pollutant Discharge
Elimination System (NPDES)
Welcome to Snohomish County's
NPDES Web Site.
This site contains information about the County's National Pollutant Discharge Elimination System (NPDES) municipal stormwater permit and the actions the County must perform under this permit to minimize or prevent stormwater pollution. This permit is part of the federal Clean Water Act. Snohomish County has operated under such a permit since 1995.
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 site focuses on the municipal stormwater permit.
The links below provide information about the municipal stormwater permit, what the County has done and will do to meet the permit requirements, how you can get involved, and other information.
NPDES stormwater permit background
Required actions under the NPDES municipal stormwater permit
How you can get involved
Stormwater Management Program documents and annual reports
NPDES-related County codes, County Engineering Design & Development Standards (EDDS), and the County Drainage Manual
General information about stormwater. The following documents contain information about stormwater and stormwater-related problems:
How to report a water pollution problem
NPDES Code Revisions Project. Snohomish County has begun revising its codes for drainage and land-disturbing activity to meet the requirements of the 2012 NPDES permit. The revisions must be effective in June 2015. The Department of Planning and Development Services is managing this project. View the Web Page for the project.
2012 Annual Report and related documents available. Snohomish County's NPDES permit 2012 annual report, 2012 stormwater monitoring reports, 2013 Stormwater Management Program document, and 2013 Structural Stormwater Control Program are available at the link to the left labeled, "Stormwater Management Program documents and annual reports."
If you have any questions or comments about NPDES:
- phone 425-388-3464,
- send an e-mail, or
- send a letter to:
Public Works, Surface Water Management, 3000 Rockefeller Ave.,
M/S 607, Everett, WA 98201