NPDES Stormwater Permit

Give Your Feedback on the 2022 Stormwater Management Plan

Each year the City drafts a Stormwater Management Program Plan, which summarizes how the City plans to enact permit requirements.  View the most recent plan below.

City of Redmond welcomes comments and feedback on
our current Stormwater Management Program Plan.     

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This Drains Here

The National Pollutant Discharge Elimination System (NPDES) permit requires the City to take numerous actions to reduce the amount of polluted stormwater runoff flowing into our lake, river, groundwater, and streams. This permit satisfies a mandate within Federal Clean Water Act, and is issued to the City by the Washington State Department of Ecology.

This permit requires the City to:

  • Provide Outreach and Education–work with people to promote daily activities that reduce stormwater pollution.
  • Inform and involve the public—give people the opportunity to weigh-in on how we meet permit requirements.
  • Respond to spills and seek-out cross-connected pipes--this activity is called an “Illicit discharge detection and elimination” program (Spill Response).
  • Review development projects—ensure stormwater facilities are built to City standards, and that construction activities don’t pollute stormwater.
  • Maintain public and private stormwater facilities—inspect and clean infrastructure, and make repairs if necessary.
  • Address stormwater pollution impacts at the watershed level--identify activities, projects, and land management strategies to protect and restore Redmond's waters.