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Hazardous

Accepted at hazardous waste collection sites - eligible businesses only

Acids with a pH of two or less or that have come into contact with metals are accepted at hazardous waste collection sites (eligible businesses only). 

If your waste acid is not contaminated with other wastes, you can treat it to raise the pH and then dispose of it to the sanitary sewer. Never put acids, even if treated, into a septic system.

  • All containers must be 5 gallons or less
  • Total waste limit: 25 gallons per trip
  • Businesses must bring a completed disposal form to the disposal location
  • Businesses are allowed a maximum of four visits per year

To qualify, your business must:

Your business may be eligible to receive no-fee hazardous waste disposal up to four times a year if you are a Small Quantity Generator (SQG).


To qualify, your business must:

Be located in King County

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Produce

less than 220 lbs (about 25 gallons) of hazardous waste per month

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Produce

less than 2.2 lbs (about a quart) of acutely hazardous waste per month

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Store

less than 2,200 lbs (about four 55-gallons drums) of hazardous waste

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This program is for King County businesses that generate less than 220 lbs of hazardous waste monthly and less than 2.2 lbs of certain Extremely Hazardous Wastes, and are Conditionally Exempt Small Quantity of Generators under Washington State Department of Ecology Dangerous Waste Regulations (WAC 173-303).



Hazardous Waste Disposal Locations

  • North Seattle
    Sunday – Tuesday

    12550 Stone Ave N Seattle, WA 98133
    9:30 a.m. - 4:30 p.m.

    Closed on July 4, Thanksgiving Day, Christmas Day, and New Year's Day.

  • South Seattle
    Thursday – Saturday

    8100 2nd Ave S Seattle, WA 98108
    9:30 a.m. - 4:30 p.m.

    Located next to the transfer station.
    Closed on July 4, Thanksgiving Day, Christmas Day, and New Year's Day.

  • Factoria
    Tuesday – Friday, Saturday and Sunday

    13800 SE 32nd St. Bellevue, WA 98005
    8 a.m. – 4 p.m. (Tues-Fri), 9 a.m. – 5 p.m. (Sat-Sun)

    The Factoria facility is located at the transfer station. Closed on Thanksgiving Day, Christmas Day, and New Years Day.

  • Auburn
    Saturday – Sunday

    1101 Outlet Collection Dr. SW, Auburn, WA 98001
    10 a.m. – 5 p.m.

    The Auburn Wastemobile location is open on weekends, year-round. Marine Flares are not accepted at this location.
    Closed Nov 28-29 and Dec 26-27, 2020.