Compressed gas cylinders

Accepted at hazardous waste collection sites

• All containers must be 8 gallons or less
• Limit of 5 tanks per trip for any tank or cylinder under 2 feet in length
• Total waste limit: 50 gallons per trip

Propane tanks larger than 8 gallons can be returned to the manufacturer or to a Blue Rhino location. 

Small gas canisters, such as camping canisters, can go in the garbage if they are empty. Empty or partially filled tanks, 8 gallons or less, can be taken to a household hazardous waste facility. King County Solid Waste transfer stations do not accept propane tanks of any size. 

Contact the Hazardous Waste Help Line at 206-296-4692 or haz.waste@kingcounty.gov for more information and pre-approval.