On-Site Liquid Waste Program "SEPTIC"

Septic system designs (on-site sewage disposal) are reviewed for compliance with the Okanogan County Public Health District (OCPHD) On-Site Sewage Disposal Regulations, then inspected and permitted after installation. Permit fees for on-site sewage (OSS) disposal systems vary based on the size and type of system. The Okanogan County Public Health District 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. In addition to reference on our Floods & Mold or Environmental Health: Liquid Waste reference, here are links to helpful fact sheets:
Designers of on-site sewage systems must have an On-site Wastewater Treatment System Designers license from the state Board of Registered Professional Engineers and Land Surveyors to operate in Washington State. The Design & Construction Standards for On-Site Sewage Systems document provides guidance for on-site sewage systems in Okanogan County. 

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 (OSS) disposal system. The permitting process includes an OSS Permit Application, process fee and other applicable requirements.  Not sure which application you need? Review our On-Site Sewage Disposal / Sewage System process comparison table, or call us at (509) 422-7140.

2023