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On-site sewage/septic health codes

Find information related to health codes from King County and Washington State Boards of Health.

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Codes from King County and Washington State Boards of Health

King County Board of Health Codes

  • See Title 12 - Public Water Systems Rules & Regulations
  • See Title 13 - On-site Sewage Code

Washington Board of Health Codes & Publications / Washington Administrative Code (WAC):

Wastewater Forms and Publications (State Dept. of Health):

Includes information regarding:

  • Recommended Standards and Guidance (RS&G's) for Performance, Application, Design, and Operation and Maintenance (Alternative On-Site Wastewater Systems)
  • List of Approved Systems and Products
  • Link to Rule Development Committee homepage

Related Topics

Maintaining your system

Learn more about proper sewage/septic system care.

Find professionals

Find a list of sewage/septic system professionals.

System inspections

Learn the benefits or regular inspections and what the process looks like.

Search records

Search the online database or other resources for official septic records.

Have a septic question?

Have a technical septic question?

Call the Septic Expert at 206-477-8177

Find a Professional

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