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Most King County offices will be closed on Thursday and Friday, Nov. 23-24, 2017, for the Thanksgiving holiday.  
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Regulations and services for private well systems

Private wells

Public Health's goal is to prevent communicable disease and illness associated with drinking water from small public and individual private water systems.

Plumbing and Gas Piping Program

Plumbing and gas piping permits and resources

Applications, permits, guidelines and inspection services for professional plumbing and gas piping contractors and homeowners who wish to do their own plumbing work.

Wastewater Program for on-site sewage systems (OSS)

On-site sewage systems (OSS)

The Public Health Wastewater Program provides educational, advisory and permitting services for owners of on-site sewage systems (OSS) and certifications for several OSS professionals.