205 W 5th Ave
Ellensburg, WA 98926-2887
Monday - Friday
8 AM - 5 PM
Kittitas (pronounced 'kit-i-tass') County is located in central Washington
State. It spans from the lush forested Cascade Mountains to the upper Yakima River Valley plains and
the Columbia River.
Environmental Health Specialist
An environmental health specialist permits all county septic systems and licenses septic system installers
and septic tank
pumpers. On Site Sewage is responsible for the safe treatment and dispersion of domestic, non-industrial
wastewater in areas
of Kittitas County to ensure the safety and sanitary disposal of waste.
Licensed designer and installers may request an inspection online.
You will receive a confirmation email once the requested inspection has been scheduled.
View scheduled inspections >
Kittitas County has a total area of 2,333 square miles. The highest point in the county is Mount Daniel at 7,959 feet above sea level.