Blair, WI Radon Levels

Q: What EPA Radon Zone is Blair in?

Blair is in Trempealeau County, EPA Zone 2.

Q: Why are radon readings shown from areas near Blair?

No homeowner radon tests have been submitted for Blair yet, so readings from the closest cities and the Trempealeau County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Blair?

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

Check local Blair radon levels and find certified testing and mitigation professionals to keep your home safe

Blair, WI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Trempealeau County, WI

Zip Code 54616

Blair sits in Trempealeau County in western Wisconsin's driftless area, where EPA Zone 2 indicates moderate radon potential. The region's unique geology, characterized by limestone bluffs and sandstone formations that escaped glaciation, can create variable radon conditions. Testing data remains limited for this 54616 community, making individual home testing important for residents to understand their specific radon exposure levels.

5.00

pCi/L area average

Above EPA Action Level

Trempealeau County average: 5.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Blair itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Blair, WI Radon Mitigation

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

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Radon Readings Near Blair, WI

No homeowner tests have been submitted for Blair yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Osseo	18.2 mi	5.00 pCi/L	1
Black River Falls	19.4 mi	9.00 pCi/L	1
Holmen	22.2 mi	2.00 pCi/L	1
Onalaska	27.6 mi	3.00 pCi/L	1
Sparta	31.2 mi	5.00 pCi/L	2
Fall Creek	32.7 mi	8.00 pCi/L	1
Altoona	36.5 mi	6.00 pCi/L	1
Westby	47.1 mi	5.00 pCi/L	1

Trempealeau County Radon Profile

EPA mapping assigns Trempealeau County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Trempealeau County average 5.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Trempealeau County home regardless of zone or a neighbor's results.

Radon FAQ for Blair, WI

What EPA Radon Zone is Blair in?

Blair and the 54616 zip code are in Trempealeau 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.

Why are radon readings shown from areas near Blair?

No homeowner radon tests have been submitted for Blair yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Trempealeau County average—are the best available indicator of local conditions until Blair homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Blair?

Radon mitigation in Blair 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 Blair?

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.