Polystyrene Foam Rules: Federal Way vs Seattle
How do polystyrene foam rules rules compare between Federal Way, WA and Seattle, WA?
Federal Way has fewer restrictions than Seattle.
Federal Way, WA
King County
Washington banned expanded polystyrene foam food service containers, coolers, and packing peanuts under RCW 70A.245. Phased restrictions began in 2023 and apply throughout King County. Compostable and recyclable alternatives are required for foodware.
View full Federal Way rules →Seattle, WA
King County
Seattle banned expanded polystyrene foam food service containers under SMC 21.36.086 starting 2009-2010, becoming the first major US city to do so. All food packaging must be recyclable or compostable. Washington added a statewide ban in 2024.
View full Seattle rules →Key Facts Comparison
| Fact | Federal Way | Seattle |
|---|---|---|
| Statute | RCW 70A.245 | - |
| Foam foodware ban | June 1, 2024 | - |
| Packing peanuts | Banned 2023 | - |
| Enforcement | WA Department of Ecology | - |
| Seattle code | - | SMC 21.36.086 |
| Effective | - | 2009-2010 |
| WA statewide | - | RCW 70A.245 (2024) |
| First US city | - | Major-city foam ban |
| Replacement | - | Compostable/recyclable |
Highlighted rows indicate differences between cities.
Federal Way FAQ
Are foam egg cartons covered?
Yes. Foam egg cartons fall under the state ban for retail sale, though existing inventory exemptions applied during the phase-in period.
What can restaurants use instead?
Operators must use recyclable, reusable, or compostable foodware. Many King County cities require BPI-certified compostable serviceware specifically.
Seattle FAQ
Can my restaurant use foam takeout boxes?
No. Polystyrene foam containers, cups, and trays are banned for food service in Seattle. Use compostable or recyclable alternatives only.
Are foam coolers also banned?
Foam ice chests and shipping coolers are restricted under the expanded WA RCW 70A.245 phasing. Retail sale of foam coolers ended June 2024 statewide.
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