Stormwater Code

Our stormwater regulations protect people, property and the environment from damage caused by stormwater runoff. Our stormwater codes also satisfy the City's obligation to comply with our Municipal Stormwater Discharge National Pollutant Discharge Elimination System (NPDES) Permit, issued by the Washington State Department of Ecology.

  • Drainage control submittal and review requirements
  • Erosion control requirements for your project during construction and grading activities
  • Flow control and stormwater treatment requirements
  • How we enforce the Stormwater Code
  • On-Site Stormwater Management and why it's important
  • Where the stormwater from your site needs to go