White and blue illustration of a house with a pipe going down to a septic system

Septic Resources

The Purpose Of On-Site Septic System (OSS) Program Is To Ensure Proper Treatment And Disposal Of Wastewater To Protect Our Drinking Water And The Environment. We Issue Septic Permits, Inspect Final Septic Installations, And Investigate Complaints Associated With On-Site Sewage Systems

Illustration of a mapped out septic system to a house


To View ALL Septic Applications, Click Here

Pumping Your Septic System

See the list of pumpers to find a licensed pumper in Chelan and Douglas Counties.

Septic System Failure

For information on failing septic systems, please see our Septic Failure Brochure.

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