Chelan County, Washington septic permits and requirements

Permitting authority

Chelan-Douglas Health District — On-Site Septic Program

Onsite Program: 509-886-6400; [email protected]. Chelan-Douglas Health District serves both Chelan and Douglas Counties.

Washington local-health-jurisdiction framework

Washington State Department of Health assigns property-level onsite sewage permitting and management to local health jurisdictions. County or district rules and procedures can be more specific than the statewide minimums.

Site and soil evaluation before design

Chelan-Douglas Health District says site and soil conditions determine whether an onsite sewage system is suitable and what system type is required. The evaluation must be completed by a licensed designer or professional engineer, although the Health District can perform the evaluation under a separate application.

Licensed design and installation

The septic design must be prepared by a licensed designer or professional engineer. The district states that permits are issued only after a designated licensed installer has been established and that septic systems must be installed by licensed installers.

Water availability and final inspection

The district requires water-availability documentation before septic permit issuance. All final septic inspections are conducted by Chelan-Douglas Health District, and inspection requests should be coordinated before the system is covered.

Official sources

SepticScope summarizes public-agency information for planning purposes. The permitting agency's current instructions control if they differ from this guide.