Auburn vs Federal Way
How do rainwater harvesting rules compare between Auburn, WA and Federal Way, WA?
Auburn and Federal Way have similar restriction levels.
Auburn, WA
King County
WA authorizes rainwater harvesting under RCW 90.03.260. Auburn allows rooftop rain barrels for non-potable use with no permit. Systems over 5,000 gal need review. Potable use requires DOH approval.
View full Auburn rules →Federal Way, WA
King County
Rainwater harvesting is legal and encouraged in Federal Way under RCW 36.89.080. Rain barrels and cisterns need no permit; indoor/plumbed systems require a permit under FWRC 13.22.
View full Federal Way rules →Key Facts Comparison
| Fact | Auburn | Federal Way |
|---|---|---|
| State Authorization | RCW 90.03.260 | - |
| No Permit Under | Rain barrels typical size | - |
| Permit Threshold | Over 5,000 gallons | - |
| Potable Use | DOH approval WAC 246-290 | - |
| Stormwater Benefit | Encouraged BMP | - |
| Legal | - | Yes (RCW 36.89.080) |
| Rain Barrel Permit | - | Not required |
| Indoor System | - | Permit required |
| LID Credit | - | Available |
| Contact | - | SWM (253) 835-2700 |
Highlighted rows indicate differences between cities.
Auburn FAQ
Can I collect rainwater from my Auburn roof?
Yes. Washington RCW 90.03.260 authorizes rooftop rainwater harvesting for on-site beneficial use without a water right. Small rain barrels and cisterns for garden irrigation need no permit.
Can I drink harvested rainwater?
Only with proper treatment (filtration, UV, disinfection), a plumbing permit from Auburn, and approval by the Washington Department of Health under WAC 246-290 for potable use.
Federal Way FAQ
Can I set up a rain barrel in Federal Way?
Yes. Simple rooftop rain barrels for garden use are legal without a permit under RCW 36.89.080 and are actively encouraged by the city.
Do I need a permit to plumb a rainwater system into my house?
Yes. Potable or indoor plumbed systems must comply with FWRC 13.22 and the Uniform Plumbing Code, including backflow prevention. Apply through the Federal Way Permit Center.
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