Onsite Sewage (Septic) Systems

Protecting Public Health & Safety

In Island County, approximately 72% of residents use septic systems, and a similar number rely on groundwater for their drinking water. Our Onsite Sewage Program works to protect both public health and our natural environment by ensuring septic systems are properly designed, installed, and maintained to prevent contamination of our precious water resources.

ReportsDocuments and Permitting FormsEnvironmental HealthHomeowner SupportReportSeptic RecordsSepticOn-Site Septic Management Plan

Our Services

We provide a range of educational, advisory, and permitting services for homeowners and septic professionals. Find what you need in the sections below.

Permitting for New Systems and Repairs: Our team works with homeowners and their licensed designers to ensure new and repaired systems are safe and effective. Services include:

  • Evaluating soil and site suitability for wastewater disposal.
  • Reviewing septic system designs to ensure they meet all code requirements.

Support for Homeowners: We are a resource for current septic system owners, helping you keep your system in good working order. Services include:

  • Working with homeowners to ensure systems are inspected and maintained on schedule.
  • Sharing educational guidance for failing or distressed systems.
  • Responding to and investigating sewage complaints.

Licensing for Septic Professionals: We ensure that septic professionals working in our community are qualified and licensed. We oversee licensing for:

  • Onsite System Installers
  • Maintenance Service Providers
  • Septic Tank Pumpers

Innovative Septic Study for Affordable Housing

Island County has completed a study to review new septic solutions that could support housing development in our community. This research culminated in a comprehensive report outlining strategies to expand septic options and technologies through updated regulations and new incentives. Read the complete report to learn more about the future of wastewater treatment in Island County.

>> Report on Onsite Wastewater Management Solutions