We want to hear from you!
Read about our program report and plans in our draft 2025 SWMP update, West Hylebos Stormwater Management Action Plan, and 2024 NPDES Annual Report. Please share your thoughts about it with us by emailing us at SWM@federalwaywa.gov. Thank you for your feedback!
NPDES Stormwater Permit
Federal Way operates under the Western Washington Phase II NPDES Municipal Stormwater Permit. The Permit allows municipalities to discharge stormwater runoff from municipal drainage systems into the State’s water bodies (i.e., streams, rivers, lakes, wetlands, etc.) as long as municipalities implement programs to protect water quality to the “maximum extent practicable” through application of Best Management Practices (BMPs). These required practices, specified in the Permit, are collectively referred to as the Stormwater Management Program.
The Permit requires the City to report on this Program via the Stormwater Management Program Plan (or SWMP) by March 31st of each year on program implementation for the prior year. and requires municipalities to update the SWMP to describe the actions planned to achieve and maintain permit compliance in the upcoming year.
The NPDES Municipal Stormwater Permit and SWMP is organized according to the following sections:
- Stormwater Planning
- Public Education and Outreach
- Public Involvement and Participation
- Mapping and Documentation
- Illicit Discharge Detection and Elimination
- Controlling Runoff from New Development, Redevelopment, and Construction Sites
- Stormwater Management for Existing Development
- Source Control Program for Existing Development
- Operations and Maintenance
- Monitoring and Assessment