Stormwater Management: Federal Way vs Redmond
How do stormwater management rules compare between Federal Way, WA and Redmond, WA?
Federal Way and Redmond have similar restriction levels.
Federal Way, WA
King County
Federal Way is an NPDES Phase II city and enforces Department of Ecology stormwater standards. New development and redevelopment over 2,000 sf trigger mitigation under the 2019 stormwater manual.
View full Federal Way rules →Redmond, WA
King County
Redmond is an NPDES Phase II city and enforces Department of Ecology stormwater standards. Development over 2,000 sf of new or replaced impervious surface must mitigate runoff.
View full Redmond rules →Key Facts Comparison
| Fact | Federal Way | Redmond |
|---|---|---|
| Permit | NPDES Phase II | NPDES Phase II |
| Manual | 2019 DOE Western WA | DOE 2019 Western WA |
| Trigger | 2,000 sf new impervious | 2,000 sf new impervious |
| Illicit discharge | Fines apply | - |
| Salmon basins | - | Bear Creek, Sammamish River |
Highlighted rows indicate differences between cities.
Federal Way FAQ
Do I need a stormwater plan for a Federal Way addition?
Yes if the project creates more than 2,000 sf of new or replaced impervious surface, and a small-project form may apply at 500 sf.
Can I wash my car in the driveway?
Yes for private residential use; commercial car washing into a storm drain is illicit discharge and is prohibited.
Redmond FAQ
Do I need a stormwater plan for a Redmond remodel?
Yes if the project creates or replaces more than 2,000 sf of impervious surface, with smaller projects requiring a basic form.
Can I wash my car at home in Redmond?
Private residential car washing is allowed; commercial washing that drains into a storm drain is an illicit discharge and is prohibited.
Compare other topics
See how Federal Way and Redmond compare on other ordinance categories.
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