Fosston, MN Radon Levels

Q: What EPA Radon Zone is Fosston in?

Fosston is in Polk County, EPA Zone 1.

Q: How much does radon mitigation cost in Fosston?

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

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

Fosston, MN Radon Facts

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

County Polk County, MN

Zip Code 56542

Fosston sits in Polk County in northwestern Minnesota, where glacial lake deposits and underlying granite bedrock create high radon potential typical of EPA Zone 1 areas. With limited radon testing data available for the 56542 zip code, residents should prioritize home testing to assess individual risk levels. The region's long, cold winters mean homes stay tightly sealed for months, potentially allowing radon concentrations to build up significantly in basement and lower-level living areas.

7.00

pCi/L area average

Above EPA Action Level

Polk 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 Fosston 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+

Fosston, 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 Fosston, MN

No homeowner tests have been submitted for Fosston 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
Crookston	41.8 mi	7.00 pCi/L	1
Thief River Falls	42.3 mi	9.00 pCi/L	1

Polk County Radon Profile

The bedrock and soils beneath Polk 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 Polk 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 Polk County.

Radon FAQ for Fosston, MN

What EPA Radon Zone is Fosston in?

Fosston and the 56542 zip code are in Polk 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 Fosston?

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

Radon mitigation in Fosston 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 Fosston?

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.