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🌍 Environmental Rules/Stormwater Management

Stormwater Management: Bellevue vs Redmond

How do stormwater management rules compare between Bellevue, WA and Redmond, WA?

Bellevue and Redmond have similar restriction levels.

Bellevue, WA

King County

Heavy Restrictions

Bellevue stormwater rules under BCC 24.06 and LUC 20.25H require flow control and water-quality treatment for new or modified impervious surfaces, with illicit-discharge enforcement.

View full Bellevue rules β†’

Redmond, WA

King County

Heavy Restrictions

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 β†’

Key Facts Comparison

FactBellevueRedmond
--
Permit-NPDES Phase II
Manual-DOE 2019 Western WA
Trigger-2,000 sf new impervious
Salmon basins-Bear Creek, Sammamish River

Highlighted rows indicate differences between cities.

Bellevue FAQ

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.

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