Black Earth, WI Radon Levels

Q: What EPA Radon Zone is Black Earth in?

Black Earth is in Dane County, EPA Zone 1.

Q: How much does radon mitigation cost in Black Earth?

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

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

Black Earth, WI Radon Facts

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

County Dane County, WI

Zip Code 53515

This Dane County community in the Madison Metro area sits in EPA Zone 1, reflecting Wisconsin's significant radon potential from glacial deposits over uranium-bearing bedrock. Current testing data for zip code 53515 is limited, emphasizing the need for homeowners to conduct their own radon measurements. Wisconsin's geology and climate create conditions where radon can accumulate readily in homes with basements or crawl spaces.

9.75

pCi/L area average

Above EPA Action Level

Dane County average: 9.75 pCi/L, based on 8 user-submitted tests across 7 cities in the county. No homeowner readings have been submitted for Black Earth 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+

Black Earth, 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 Black Earth, WI

No homeowner tests have been submitted for Black Earth 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
Mount Horeb	9.0 mi	9.00 pCi/L	1
Blue Mounds	10.0 mi	15.00 pCi/L	1
Middleton	11.8 mi	4.00 pCi/L	1
Verona	13.1 mi	18.00 pCi/L	1
Waunakee	14.8 mi	5.50 pCi/L	2
Ridgeway	15.3 mi	8.00 pCi/L	1
Spring Green	17.0 mi	4.00 pCi/L	1
New Glarus	22.5 mi	7.00 pCi/L	1

Dane County Radon Profile

Dane 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 7 cities in Dane County average 9.75 pCi/L across 8 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 Dane County to test, as levels can differ between neighboring homes.

Radon FAQ for Black Earth, WI

What EPA Radon Zone is Black Earth in?

Black Earth and the 53515 zip code are in Dane 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 Black Earth?

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

Radon mitigation in Black Earth 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 Black Earth?

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.