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Wastewater treatment
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Treatment facilities
Learn about King County's wastewater and wet weather treatment facilities that protect water quality and public health in the central Puget Sound region.
Wastewater programs
Learn about our programs to improve water quality, plan and prepare our wastewater system for regional growth, and protect public health and the environment.
Capital projects
Find information on King County’s wastewater capital projects, including project descriptions, locations, and status, and sign up for project updates.
Resource recovery
Learn how Resource Recovery provides leadership around sustainability and the reuse of valuable products to support the mission of the Wastewater Treatment Division to protect public health and the environment.
Sewer system services
Find information about the programs and services operated by the King County Wastewater Treatment Division to support the regional wastewater conveyance and treatment system.
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