Washington Listed Wastes regulations & environmental compliance analysis

Washington Listed Wastes: What you need to know

Governing Law and Regulations

Dangerous waste regulations: Washington Administrative Code (WAC) 173-303-010 to 173-303-9907

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Discarded chemical products: WAC 173-303-081 and WAC 173-303-9903

Dangerous waste sources: WAC 173-303-082 and WAC 173-303-9904

Dangerous waste constituents list: WAC 173-303-9905

Regulatory Agencies

Washington Department of Ecology (WDOE) Hazardous Waste and Toxics Reduction Program

U.S. Environmental Protection Agency (EPA) Region 10

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Washington's listed wastes are regulated hazardous wastes that are listed in the state's Dangerous Waste Regulations in WAC 173-303-9903 to 173-3-3-9904. Checking the lists is the first step in designating your waste.

These wastes are specifically listed as hazardous. Other wastes may be regulated because they exhibit certain hazardous waste characteristics (ignitability, corrosivity, reactivity, toxicity). See the state section CHARACTERISTIC WASTE for more information.

WDOE allows petitioners to delist classes of waste as long as the class of waste is not regulated under the federal regulations covering listing and identification of wastes. See the state section DELISTING PETITIONS for more information.

Administration and enforcement. WDOE's Hazardous Waste and Toxics Reduction Program administers and enforces the DW, EHW, and special waste rules in Washington.

State Requirements


WDOE regulates all of the federal RCRA wastes plus an additional number of state-only wastes. The dangerous waste lists include discarded chemical products and dangerous waste sources.

Federally regulated hazardous waste codes begin with:

Read more about Listed Wastes

Washington Listed Wastes Resources

Type Title
See all Listed Wastes Resources