Douglas 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. Site and soil evaluations are completed by a licensed designer or professional engineer unless the district is separately hired to perform the evaluation.

Licensed design and installation

A licensed designer or professional engineer prepares the septic design. The district says a permit will not be issued until a designated licensed installer is established, and installation must be performed by a licensed installer.

Final inspection by the health district

Chelan-Douglas Health District performs all final septic inspections. Applicants are instructed to submit inspection requests in advance so the installation can be inspected before completion and cover.

Official sources

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