Free Small Business Hazardous Waste Disposal

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Is your business eligible?

If so, fill out the online form or download the PDF.

Get more info on services

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Questions? 206-263-8899 Business Waste Line or toll free at 800-325-6165, ext. 3-8899 Monday – Friday, 9 a.m. to 4 p.m., closed noon -1 p.m. and holidays.

Free small business hazardous waste disposal

Is my business eligible to use the free* disposal service?

To qualify your business must be:

  • located in King County (this includes all cities and unincorporated areas – as well as all of Bothell, Pacific, Auburn, and Algona.
  • a Small Quantity Generator (SQG).

What is a Small Quantity Generator SQG?

It is a business that:

  • produces less than 220 pounds (about 25 gallons) of hazardous waste per month.
  • produces less than 2.2 pounds (about a quart) of acutely hazardous waste** per month.
  • stores less than 2,200 pounds (about four 55 gallon drums) of hazardous waste.

Visit the Washington State Department of Ecology's site for more information about Small Quantity Generator rules.

How often can your business use this free service?

Your business can visit a maximum of four times a year. Call 206-263-8899 or e-mail if you need to dispose of your waste more often than this or for more options.

You cannot use the free disposal service if you

  • produce more than 220 pounds of hazardous waste per month
  • produce more than 2.2 pounds of extremely hazardous waste** per month
  • store more than 2,200 pounds of hazardous waste

If you do not qualify for free disposal, you should manage your hazardous wastes via private hazardous waste management firms.

Call (206) 263-8899 if you are not sure if you qualify.

What wastes can you bring?

Some common wastes are hazardous and do not go in the garbage or down drains. Find out what wastes you can bring to a hazardous waste collection site.

Where do you take your wastes?

Find disposal locations here.

Can you hire a hauler to take my wastes to the facility?

Yes, you may use a hauler. But we prefer that the business owner/manager or a company employee bring the waste themselves.

Container size and quantity limits

  • No more than 25 gallons (max 220 pounds) of hazardous waste per visit.
  • Containers must be 5 gallons or less and weigh less than 60 pounds each.
  • All containers regardless of contents are counted as full.
  • Call 206-263-8899 if you have more than these limits. We reserve the right to refuse any waste at our facilities.

Next steps:

  • complete this online form, print 2 copies and bring to disposal facility with your hazardous waste


  • download the PDF form, print 2 completed, signed copies and bring them to a disposal facility with your hazardous waste.

Laboratory Chemicals

Laboratory chemicals MUST be approved by Program staff before you bring them to a facility for disposal. To obtain approval, email a list of your laboratory chemical (including the chemical names, concentrations and volumes) to

Do you have unwanted but still useful hazardous products?

You may be able to sell or give them away through the Industrial Materials Exchange (IMEX).

Call 206-263-8899 or e-mail if you have any questions.



*A fee charged on garbage/water/sewer bills funds the business hazardous waste disposal program. There is no additional fee to dispose of your hazardous waste materials through this program.  

** Laboratories, medical facilities, pest control operators and other businesses that work with highly toxic or reactive chemicals (called "acutely hazardous wastes") may produce wastes with a monthly SQG limit of 2.2 pounds. Call the business waste line (206-263-8899) for help or check the "P" list of discarded chemical products.