Contact Us

Public Health
Seattle & King County
401 5th Ave., Suite 1300
Seattle, WA 98104

Phone: 206-296-4600
TTY Relay: 711

Toll-free: 800-325-6165

Click here to email us

Public Records Requests

Instructions to submit a Public Records Request

Information for septic professionals

In Washington State, septic professionals are required to be certified or licensed. Septic professionals perform various types of work on septic systems including design, installation, submission of applications for permit approval or release, septic tank pumping, and maintenance. If you are interested in working within the septic system industry, click on "Certificates of Competency" for qualifications and applications.

Certificates of Competency
Permit information for new septic construction
Forms and applications
Septic system codes
Public Health memos to industry and policies & procedures
Approved Wastewater Tanks for OSS
Complete list of Wastewater Program fees