The King County Solid Waste Division (SWD) operates one landfill and maintains several closed landfills.
Self-haul customer safety during COVID-19
King County's Solid Waste Division is following Gov. Jay Inslee's May 13 update to the Washington state mask mandate. Learn more…
Cedar Hills Regional Landfill is closed to the general public. Waste collected at the transfer stations is transported to the Cedar Hills Regional Landfill for disposal.
Since March 1986, area residents and Solid Waste Division staff have met to discuss conditions and activities at the Cedar Hills Regional Landfill.
The King County Solid Waste Division is developing alternatives to maximize the capacity of the Cedar Hills Regional Landfill to meet the county’s disposal needs.
SWD maintains custodial responsibilities for ten landfills located throughout King County.
The King County Solid Waste Division contracts with renewable energy company INGENCO – doing business as Bio Energy (Washington) LLC, (BEW) – to generate renewable energy from landfill gas produced by decomposing organic material at the Cedar Hills Regional Landfill.
SWD is proposing a second conveyance pipeline to carry landfill gas from the flare station to the gas-to-energy plant for processing.