Septic Systems

The mission of the On-Site Sewage Program is to minimize the threat of surface and ground water contamination from failing or improperly designed, installed or maintained on-site sewage systems.

Our Services


Check the schedule for a free septic system class  to learn about your septic system.

The On-Site Sewage Program provides educational, advisory and permitting services for owners of septic systems and certifications for septic system installers, operations and monitoring specialists and septic pumpers. A Sanitarian of the Day is available Monday through Thursday from 9 to 10 a.m. on a first come, first served basis either by walk-in or phone to help answer technical and general questions. The phone number is 360-385-9444.

Program Activities


  • Certification program for all septic system installers, pumpers and operations and monitoring specialists
  • Complaint investigation relating to septic systems
  • Education for homeowners and other professionals interested in septic systems
  • Enforcement of state and local codes
  • Inspection of septic system installations
  • Monitoring inspection-evaluation of existing septic systems
  • Referral for low-interest loan program to repair failing or substandard septic systems
  • Review and issuance of installation and repair permits for septic systems
  • Review of: short and long subdivisions, boundary line adjustments, building permits, septic system monitoring reports
  • Sanitarian of the day

Program Performance Measures


View the Jefferson County Public Health's performance measures.