Thorp, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Thorp in?

Thorp is in Kittitas County, EPA Zone 2.

Q: How much does radon mitigation cost in Thorp?

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

Set in Kittitas County within central Washington's Cascade foothills, Thorp lies over alluvial soils and volcanic formations that can produce variable radon conditions. Rural homes in the area typically feature crawl space or slab construction with some properties having partial basements. Since comprehensive radon testing data is not available for zip code 98946, residents should conduct professional testing to determine individual property radon levels.

Thorp, WA Radon Mitigation

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

Thorp, WA Radon Testing

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

Thorp Radon Facts

Key details about the radon risk profile for Thorp and the 98946 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Kittitas County, WA

Zip Code

98946

Predicted Screening Level

2–4 pCi/L (Zone 2)

Thorp and the 98946 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 Thorp, WA

What EPA Radon Zone is Thorp in?

Thorp and the 98946 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 Thorp?

Radon mitigation in Thorp 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 Thorp?

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