Fort Atkinson, WI Radon Levels

Q: What EPA Radon Zone is Fort Atkinson in?

Fort Atkinson is in Jefferson County, EPA Zone 1.

Q: How much does radon mitigation cost in Fort Atkinson?

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

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

Fort Atkinson, WI Radon Facts

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

County Jefferson County, WI

Zip Code 53538

Located in Jefferson County within the Janesville Metro area, Fort Atkinson overlies glacial deposits and dolomite bedrock that create conditions favorable for radon accumulation. The community features a mix of historic downtown buildings and suburban residential areas, with many homes including full basements where radon levels can concentrate. Testing data for the 53538 area is currently limited, making individual radon testing essential for homeowners in this EPA Zone 1 region.

7.00

pCi/L area average

Above EPA Action Level

Jefferson County average: 7.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Fort Atkinson 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+

Fort Atkinson, 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 Fort Atkinson, WI

No homeowner tests have been submitted for Fort Atkinson 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	11.3 mi	11.50 pCi/L	2
Elkhorn	21.6 mi	5.00 pCi/L	1
Watertown	22.5 mi	7.00 pCi/L	1
Mc Farland	23.5 mi	9.00 pCi/L	1
Delavan	23.5 mi	6.00 pCi/L	1
Oregon	27.3 mi	12.00 pCi/L	1
Williams Bay	28.5 mi	12.00 pCi/L	1
Fontana	29.8 mi	4.50 pCi/L	2

Jefferson County Radon Profile

The bedrock and soils beneath Jefferson 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 Jefferson County average 7.00 pCi/L across 1 test — 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 Jefferson County.

Radon FAQ for Fort Atkinson, WI

What EPA Radon Zone is Fort Atkinson in?

Fort Atkinson and the 53538 zip code are in Jefferson 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 Fort Atkinson?

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

Radon mitigation in Fort Atkinson 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 Fort Atkinson?

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.