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Business waste

Guidance on managing dangerous or hazardous waste.

https://ecology.wa.gov/waste-toxics/business-waste

Dangerous waste basics

Find tools and resources to help your business learn how to manage dangerous waste properly.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics

Dangerous waste guidance

Businesses in Washington that generate dangerous waste must follow the Dangerous Waste Regulations.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance

Common types of dangerous waste

Learn how to manage common types of dangerous waste at your business.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste

Dispose, recycle, or treat dangerous waste

Learn how your business can properly dispose, recycle, or treat dangerous waste.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dispose-recycle-or-treat

Generator category

Businesses that generate dangerous waste must determine their generator category each month.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/generator-category

Counting dangerous waste

Learn how to count your business's dangerous waste and determine your generator category.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/counting-dangerous-waste

Print free labels

Free dangerous waste labels you can print from your computer for your business.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/label-dangerous-waste/print-free-labels

Dangerous waste containers

Keep your workers safe by keeping your dangerous waste containers closed and in good condition.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/proper-containment

Label dangerous waste

Learn how to label dangerous waste containers.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/label-dangerous-waste

Manage dangerous waste for businesses

Guidance on complying with Washington's dangerous waste regulations.

https://ecology.wa.gov/waste-toxics/business-waste/manage-your-waste

Pharmaceutical waste management options for eligible facilities

Facilities that meet certain criteria can use pharmaceutical waste management options.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste/management-options

Accumulation

Learn more about on-site dangerous waste accumulation time limits and restrictions.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/accumulation

Prepare for an inspection

We inspect facilities to ensure they legally handle, store, and dispose of dangerous waste.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/prepare-for-an-inspection

Universal waste

Learn how your business can manage certain types of dangerous waste under the Universal Waste Rule.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/universal-waste

Recordkeeping

Learn what records your business must keep if you generate dangerous waste.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/recordkeeping

Small quantity generators (SQGs)

Learn about the benefits and rules for dangerous waste small quantity generators (SQGs).

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/generator-category/small-quantity-generators

Dangerous waste designation

Designation is the process of determining if a waste is dangerous waste and what the hazards are.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/designation

Managing pharmaceutical waste

Learn how to manage waste pharmaceuticals properly to keep them out of the environment.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste

Dental waste

Dental offices generate dangerous waste that must be disposed of properly.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/dentists

Fertilizers

Learn how your business can register, manage, and dispose of fertilizers properly.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/fertilizers

Nicotine and cannabis waste

Learn how your business can properly handle nicotine, vape, and cannabis waste.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/nicotine-and-cannabis-waste

Moderate risk waste facility guidance

Regulatory information and guidance for county moderate risk waste facilities.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/moderate-risk-waste-facility-guidance

Used oil management

Learn how businesses in Washington can properly manage used oil.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/used-oil

Managing solar panel waste

Learn how businesses can properly manage, recycle, or dispose of end-of-life solar panels.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/solar-panel-waste

Washington state-only criteria

Learn how to determine if your waste designates for Washington state-only criteria.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dangerous-waste-basics/designation/check-washington-state-only-criteria

Contained-in policy for contaminated soil and groundwater

Learn how to reduce cleanup costs by requesting approval under our contained-in policy.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contained-in-determinations

Pollution prevention assistance (PPA)

Businesses can get free, non-regulatory pollution prevention help from local PPA specialists.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/pollution-prevention-services/pollution-prevention-assistance

Hazardous waste generation fee

Washington businesses that generate any amount of dangerous waste must pay this fee.

https://ecology.wa.gov/waste-toxics/business-waste/reports-fees/hazardous-waste-generation-fee

State issues $33,000 penalty to U.S. Postal Service for dangerous waste violations

August 19, 2025 News release: USPS has been improperly managing and storing dangerous waste at its Seattle Bulk Mail Center in Federal Way. Ecology issued a $33,000 penalty for violations found during a 2024 inspection.

https://ecology.wa.gov/about-us/who-we-are/news/2025/aug-19-state-issues-33-000-penalty-to-u-s-postal-service-for-dangerous-waste-violations