On-Site Liquid Waste Program "SEPTIC"

Septic system designs (on-site sewage disposal) are reviewed for compliance with Okanogan County Public Health On-Site Sewage Disposal Regulations (pdf), then inspected and permitted after installation. Permit fees for on-site sewage disposal systems vary based on the size and type of system. Okanogan County Public Health enforces liquid waste regulations for septic systems less than 3,500 gallons per day. The Department of Health and the Department of Ecology enforce regulations for larger sewage systems.

Proper maintenance of septic systems is important to avoid system failure. A fact sheet developed by WSU Cooperative Properly Managing Your Septic Tank System is available.

Installers of sewage disposal systems are annually permitted by Public Health to ensure proper installation, replacement, alteration, repair or extension of an on-site sewage disposal system. The permitting process includes an application, payment fees and other applicable requirements.
Designers of on-site sewage systems must have an On-site Wastewater Treatment System Designers license from the Department of Licensing to operate in Washington State.