Lab chemicals
Disposal for Businesses
Disposal requirements vary
Some chemicals are accepted at hazardous waste collection sites, with prior authorization (eligible businesses only). For information about disposal options and to receive authorization, contact the Hazardous Waste Help Line at 206-296-4692 or haz.waste@kingcounty.gov.
Do not mix chemicals. Combining them can result in dangerous reactions. Place chemicals separately into airtight containers.
- All containers must be 5 gallons or less
- Total waste limit: 25 gallons or 220 pounds per trip
- Businesses must bring a completed disposal form to the disposal location
- Businesses are allowed a maximum of four visits per year
Does my business qualify for no-fee disposal?
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
Produce
less than 220 lbs (about 25 gallons) of hazardous waste per month
Produce
less than 2.2 lbs (about a quart) of acutely hazardous waste per month
Store
less than 2,200 lbs (about four 55-gallons drums) of hazardous waste
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).
Please see additional disposal limits and restrictions here.
Hazardous Waste Disposal Locations
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North SeattleSunday – Tuesday
12550 Stone Ave N Seattle, WA 98133
9 a.m. - 5 p.m.Closed on July 4, Thanksgiving Day, Christmas Day, and New Year's Day.
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South SeattleThursday – Saturday
8100 2nd Ave S Seattle, WA 98108
9 a.m. - 5 p.m.Located next to the transfer station.
Closed on July 4, Thanksgiving Day, Christmas Day, and New Year's Day. -
FactoriaTuesday – 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.
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AuburnSaturday – Sunday
1101 Outlet Collection Way, 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.
Located near the loading dock of Nordstrom Rack. In 2024, this location is closed Nov. 30, Dec. 1 and Dec. 28-29.
