Edgerton, WI Radon Levels

Q: What EPA Radon Zone is Edgerton in?

Edgerton is in Rock County, EPA Zone 1.

Q: How much does radon mitigation cost in Edgerton?

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

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

Edgerton, WI Radon Facts

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

County Rock County, WI

Zip Code 53534

Positioned in Rock County within the Janesville and Madison metro areas, Edgerton sits on glacial outwash deposits over dolomite bedrock that underlies much of southern Wisconsin. The community features historic downtown structures and suburban neighborhoods developed primarily from the mid-1900s onward, most with full basements standard to the region. Limited testing data for ZIP code 53534 emphasizes the importance of individual radon testing for homeowners in this EPA Zone 1 area.

11.50

pCi/L area average

Above EPA Action Level

Rock County average: 11.50 pCi/L, based on 2 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Edgerton 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+

Edgerton, 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 Edgerton, WI

No homeowner tests have been submitted for Edgerton 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
Milton	7.0 mi	11.50 pCi/L	2
Mc Farland	16.7 mi	9.00 pCi/L	1
Oregon	17.5 mi	12.00 pCi/L	1
Delavan	26.7 mi	6.00 pCi/L	1
Verona	27.1 mi	18.00 pCi/L	1
Elkhorn	27.9 mi	5.00 pCi/L	1
Middleton	29.0 mi	4.00 pCi/L	1
New Glarus	29.4 mi	7.00 pCi/L	1

Rock County Radon Profile

The bedrock and soils beneath Rock County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Rock County average 11.50 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Rock County.

Radon FAQ for Edgerton, WI

What EPA Radon Zone is Edgerton in?

Edgerton and the 53534 zip code are in Rock 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 Edgerton?

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

Radon mitigation in Edgerton 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 Edgerton?

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.