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Washington Statewide Rule

Washington State Outdoor Burning Restrictions

Heavy RestrictionsApplies statewide across Washington (2026)

Key Facts

Statute
RCW 70A.15.5090
Banned Areas
UGAs and cities over 10,000
Always Banned
Garbage, plastics, treated wood
Max Penalty
$10,000 per day
Last verified: August 20, 2026Source: Washington State Legislature

Summary

Washington's Clean Air Act (RCW 70A.15) bans outdoor burning in urban growth areas and most cities. The Department of Ecology and clean air agencies enforce statewide standards regardless of local rules.

Permits — Issuance — Conditioning of permits — Fees — Agricultural burning practices and research task force — Development of public education materials — Agricultural activities. (1) Any person who proposes to set fires in the course of agricultural activities shall obtain a permit from an air pollution control authority, the department of ecology, or a local entity delegated permitting authority under RCW 70A.15.5100 . General permit criteria of statewide applicability shall be established by the department, by rule, after consultation with the various air pollution control authorities. For the purposes of this section, agricultural burning includes the combustion of natural vegetation from agricultural activities in portable flame cap kilns, provided that the biomass does not contain any prohibited materials as defined in RCW 70A.15.5010 (1). (a) Permits shall be issued under this section based on seasonal operations or by individual operations, or both. (b) Incidental agricultural burning consistent with provisions established in RCW 70A.15.5070 is allowed without applying for any permit and without the payment of any fee. (2) The department of ecology, local air authorities, or a local entity with delegated permit authority shall: (a) Condition all permits to ensure that the public interest in air, water, and land pollution and safety to life and property is fully considered; (b) Condition all burning permits to minimize air pollution insofar as practical;

Source: Washington State LegislatureView official code

Full Breakdown

Under RCW 70A.15.5090 (formerly RCW 70.94.6512), outdoor burning is prohibited in urban growth areas designated under the Growth Management Act, and in cities with populations of 10,000 or more. Recreational fires using clean firewood are generally permitted statewide if they comply with size limits (typically under 3 feet in diameter and 2 feet high). The Department of Ecology and local clean air agencies can issue burn bans during poor air quality or fire danger. Burning of garbage, plastics, treated wood, and yard debris is prohibited statewide under RCW 70A.15.5070.

Violations & Penalties

Illegal outdoor burning carries civil penalties up to $10,000 per day under RCW 70A.15.3160 plus potential cleanup costs.

Frequently Asked Questions

Can I have a backyard recreational fire?
Recreational fires with clean dry firewood are generally allowed statewide under specified size limits, but cities and clean air agencies may impose additional restrictions or burn bans.
Is yard debris burning legal?
It depends on location. In urban growth areas and cities over 10,000 population, residential yard debris burning is prohibited under RCW 70A.15.5090.

Sources

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