Belmont, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Belmont in?

Belmont is in Whitman County, EPA Zone 2.

Q: How much does radon mitigation cost in Belmont?

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

Whitman County

EPA Zone 2

Positioned in Whitman County within Washington's Palouse region, Belmont sits atop loess deposits and basaltic bedrock that typically produce moderate radon levels compared to other areas of the state. The rural community's housing stock includes both agricultural properties and small residential developments, often featuring crawl space foundations common in the Pacific Northwest. While testing data for zip code 99104 is currently limited, the EPA Zone 2 classification suggests periodic radon testing is advisable for all homes.

Belmont, WA Radon Mitigation

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

Belmont, WA Radon Testing

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

Belmont Radon Facts

Key details about the radon risk profile for Belmont and the 99104 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Whitman County, WA

Zip Code

99104

Predicted Screening Level

2–4 pCi/L (Zone 2)

Belmont and the 99104 zip code are located in Whitman 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 Belmont, WA

What EPA Radon Zone is Belmont in?

Belmont and the 99104 zip code are in Whitman 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 Belmont?

Radon mitigation in Belmont 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 Belmont?

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