Klickitat, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Klickitat in?

Klickitat is in Klickitat County, EPA Zone 2.

Q: How much does radon mitigation cost in Klickitat?

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

Klickitat County

EPA Zone 2

Positioned in the Columbia River Gorge within Klickitat County, this small Washington community sits where volcanic basalt formations create moderate radon conditions typical of the Columbia Plateau region. While specific testing data for the area remains limited, the underlying geology and rural housing patterns suggest homeowners should consider radon assessment. Residents in zip code 98628 should prioritize testing, particularly in homes with basements or lower levels that could accumulate radon from the area's volcanic soils.

Klickitat, WA Radon Mitigation

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

Klickitat, WA Radon Testing

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

Klickitat Radon Facts

Key details about the radon risk profile for Klickitat and the 98628 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Klickitat County, WA

Zip Code

98628

Predicted Screening Level

2–4 pCi/L (Zone 2)

Klickitat and the 98628 zip code are located in Klickitat 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 Klickitat, WA

What EPA Radon Zone is Klickitat in?

Klickitat and the 98628 zip code are in Klickitat 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 Klickitat?

Radon mitigation in Klickitat 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 Klickitat?

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