Stormwater Management Plan

Federally required plans are part of our work to protect stormwater quality. The City of Seattle Stormwater Management Plan complies with the Washington State Department of Ecology issued 2024 National Pollutant Discharge Elimination System (NPDES) Phase I Municipal Stormwater Permit. The Plan:

  • Protect water quality
  • Reduces the discharge of pollutants
  • Satisfies requirements of the Clean Water Act
  • Meets state requirements

Our current annual report and attachments, including the current Stormwater Management Plan, all documents in PDF format:

If you would like to comment or have questions about the 2025 Annual Report or 2026 Stormwater Management Plan, please email SWMP@seattle.gov.

Previous Annual Reports can be found under “Facility Documents” on the Washington State Department of Ecology’s Water Quality Permitting and Reporting Information System (PARIS) website.

Additional Resources

Public Utilities

Andrew Lee, General Manager and CEO
Address: 700 5th Avenue, Suite 4900, Seattle, WA, 98104
Mailing Address: PO Box 34018, Seattle, WA, 98124-5177
Phone: (206) 684-3000
SPUCustomerService@seattle.gov

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Seattle Public Utilities (SPU) is comprised of three major direct-service providing utilities: the Water Utility, the Drainage and Wastewater Utility, and the Solid Waste Utility.