Hillsboro, WI Radon Levels

Q: What EPA Radon Zone is Hillsboro in?

Hillsboro is in Vernon County, EPA Zone 1.

Q: How much does radon mitigation cost in Hillsboro?

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

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

Hillsboro, WI Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Vernon County, WI

Zip Code 54634

Positioned in Vernon County within the La Crosse Metro area, this community lies in the Driftless Area where ancient sandstone and limestone formations create varied radon potential. Given the lack of comprehensive testing data for zip code 54634, local residents should prioritize radon testing to understand their home's specific risk levels.

5.00

pCi/L area average

Above EPA Action Level

Vernon County average: 5.00 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Hillsboro 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+

Hillsboro, 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 Hillsboro, WI

No homeowner tests have been submitted for Hillsboro 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
Kendall	13.8 mi	9.00 pCi/L	1
La Valle	15.1 mi	9.00 pCi/L	2
Reedsburg	22.0 mi	5.00 pCi/L	1
Westby	22.8 mi	5.00 pCi/L	1
Viroqua	23.7 mi	5.00 pCi/L	1
Blue River	26.1 mi	6.00 pCi/L	1
Sparta	31.4 mi	5.00 pCi/L	2
Spring Green	33.5 mi	4.00 pCi/L	1

Vernon County Radon Profile

Vernon County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 2 cities in Vernon County average 5.00 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Vernon County to test, as levels can differ between neighboring homes.

Radon FAQ for Hillsboro, WI

What EPA Radon Zone is Hillsboro in?

Hillsboro and the 54634 zip code are in Vernon County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Hillsboro?

No homeowner radon tests have been submitted for Hillsboro yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Vernon County average—are the best available indicator of local conditions until Hillsboro 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 Hillsboro?

Radon mitigation in Hillsboro 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 Hillsboro?

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.