Butterfield, MN Radon Levels

Q: What EPA Radon Zone is Butterfield in?

Butterfield is in Watonwan County, EPA Zone 1.

Q: How much does radon mitigation cost in Butterfield?

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

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

Butterfield, MN Radon Facts

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

County Watonwan County, MN

Zip Code 56120

This small Watonwan County community in south-central Minnesota sits on glacial till deposits that can create variable radon conditions. Rural properties in the 56120 zip code area feature a mix of older farmsteads and modern homes, each presenting different foundation characteristics. Since local testing data is limited, homeowners should prioritize professional radon testing to understand their individual property's risk profile.

8.60

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 8.60 pCi/L, based on 5 tests from 5 nearby cities. No readings have been submitted for Butterfield yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Butterfield, MN 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 Butterfield, MN

No homeowner tests have been submitted for Butterfield 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
Sleepy Eye	22.1 mi	12.00 pCi/L	1
Fairmont	28.4 mi	8.00 pCi/L	1
Nicollet	36.9 mi	2.00 pCi/L	1
Mankato	40.2 mi	14.00 pCi/L	1
Blue Earth	41.7 mi	7.00 pCi/L	1

Watonwan County Radon Profile

Watonwan 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. Few homeowner tests have been logged inside Watonwan County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Watonwan County to test, as levels can differ between neighboring homes.

Radon FAQ for Butterfield, MN

What EPA Radon Zone is Butterfield in?

Butterfield and the 56120 zip code are in Watonwan 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 Butterfield?

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

Radon mitigation in Butterfield 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 Butterfield?

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.