Lone Rock, WI Radon Levels

Q: What EPA Radon Zone is Lone Rock in?

Lone Rock is in Richland County, EPA Zone 1.

Q: How much does radon mitigation cost in Lone Rock?

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

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

Lone Rock, WI Radon Facts

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

County Richland County, WI

Zip Code 53556

Set in the scenic countryside of Richland County, Lone Rock sits on sandstone and limestone formations typical of southwestern Wisconsin's Driftless Area. Radon testing data isn't available for this 53556 community, though the region's geology can sometimes produce elevated readings. Individual home testing is particularly important given the area's mix of older construction and the potential for radon entry through foundation cracks.

6.00

pCi/L area average

Above EPA Action Level

Richland County average: 6.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Lone Rock 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+

Lone Rock, 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 Lone Rock, WI

No homeowner tests have been submitted for Lone Rock 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
Spring Green	8.7 mi	4.00 pCi/L	1
Blue River	17.8 mi	6.00 pCi/L	1
Ridgeway	19.3 mi	8.00 pCi/L	1
Reedsburg	24.6 mi	5.00 pCi/L	1
La Valle	24.7 mi	9.00 pCi/L	2
Blue Mounds	25.1 mi	15.00 pCi/L	1
Mount Horeb	29.1 mi	9.00 pCi/L	1
Middleton	37.5 mi	4.00 pCi/L	1

Richland County Radon Profile

Richland 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 1 city in Richland County average 6.00 pCi/L across 1 test — 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 Richland County to test, as levels can differ between neighboring homes.

Radon FAQ for Lone Rock, WI

What EPA Radon Zone is Lone Rock in?

Lone Rock and the 53556 zip code are in Richland 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 Lone Rock?

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

Radon mitigation in Lone Rock 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 Lone Rock?

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.