Wilton, WI Radon Levels

Q: What EPA Radon Zone is Wilton in?

Wilton is in Monroe County, EPA Zone 2.

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

No homeowner radon tests have been submitted for Wilton yet, so readings from the closest cities and the Monroe 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 Wilton?

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

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

Wilton, WI Radon Facts

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

County Monroe County, WI

Zip Code 54670

Located in Monroe County within Wisconsin's Driftless Area, Wilton sits where sandstone bedrock and thin glacial deposits create the region's distinctive geological character. Although testing data for zip code 54670 is currently limited, the area's fractured bedrock can allow radon migration into homes throughout this scenic valley region. Professional radon testing is recommended for all residents, particularly those in older homes with stone or block foundations.

6.33

pCi/L area average

Above EPA Action Level

Monroe County average: 6.33 pCi/L, based on 3 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Wilton 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+

Wilton, 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 Wilton, WI

No homeowner tests have been submitted for Wilton 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	7.9 mi	9.00 pCi/L	1
Sparta	17.1 mi	5.00 pCi/L	2
Westby	21.3 mi	5.00 pCi/L	1
La Valle	26.5 mi	9.00 pCi/L	2
Necedah	26.7 mi	7.50 pCi/L	2
Viroqua	27.4 mi	5.00 pCi/L	1
Reedsburg	33.3 mi	5.00 pCi/L	1
Black River Falls	35.6 mi	9.00 pCi/L	1

Monroe County Radon Profile

The soils and bedrock of Monroe County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 2 cities in Monroe County average 6.33 pCi/L across 3 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 Monroe County to test, as levels can differ between neighboring homes.

Radon FAQ for Wilton, WI

What EPA Radon Zone is Wilton in?

Wilton and the 54670 zip code are in Monroe 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 Wilton?

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

Radon mitigation in Wilton 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 Wilton?

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.