Ellensburg, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Ellensburg in?

Ellensburg is in Kittitas County, EPA Zone 2.

Q: How much does radon mitigation cost in Ellensburg?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Kittitas County

EPA Zone 2

Located in Kittitas County in Washington's central valley, Ellensburg sits within the Columbia River Basin where volcanic soils and sedimentary deposits can create moderate radon conditions. The university town's housing in zip code 98926 ranges from historic downtown buildings to modern student housing and suburban homes with varied foundation types. With radon testing data currently limited for the area, residents should test their properties to determine individual radon levels.

Ellensburg, WA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Ellensburg, WA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Ellensburg Radon Facts

Key details about the radon risk profile for Ellensburg and the 98926 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Kittitas County, WA

Zip Code

98926

Predicted Screening Level

2–4 pCi/L (Zone 2)

Ellensburg and the 98926 zip code are located in Kittitas County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Ellensburg, WA

What EPA Radon Zone is Ellensburg in?

Ellensburg and the 98926 zip code are in Kittitas County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Ellensburg?

Radon mitigation in Ellensburg typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Ellensburg?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Washington

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Vancouver	6.56 pCi/L	9
Kent	3.60 pCi/L	5
Seattle	5.25 pCi/L	4
Olympia	5.00 pCi/L	4
Bellevue	3.75 pCi/L	4
Spokane	11.67 pCi/L	3
Camas	8.00 pCi/L	3
Centralia	7.00 pCi/L	3
Bellingham	4.50 pCi/L	2
Kirkland	4.50 pCi/L	2
Washougal	8.00 pCi/L	1
Ridgefield	5.00 pCi/L	1
Moses Lake	No submissions	0