Ortonville, MN Radon Levels

Q: What EPA Radon Zone is Ortonville in?

Ortonville is in Big Stone County, EPA Zone 1.

Q: How much does radon mitigation cost in Ortonville?

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

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

Ortonville, MN Radon Facts

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

County Big Stone County, MN

Zip Code 56278

Border community in Big Stone County along the Minnesota-South Dakota line, Ortonville sits in EPA Zone 1 where prairie geology and glacial till create high radon potential. Testing data for zip code 56278 is currently limited, emphasizing the importance of individual home testing. The area's granite outcrops and typical basement construction make professional radon evaluation crucial for residential properties.

12.00

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 12.00 pCi/L, based on 1 test from 1 nearby city. No readings have been submitted for Ortonville 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+

Ortonville, 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 Ortonville, MN

No homeowner tests have been submitted for Ortonville 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
Morris	31.9 mi	12.00 pCi/L	1

Big Stone County Radon Profile

Because of its underlying geology, Big Stone County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Direct test data for Big Stone County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Big Stone County home regardless of zone or a neighbor's results.

Radon FAQ for Ortonville, MN

What EPA Radon Zone is Ortonville in?

Ortonville and the 56278 zip code are in Big Stone 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 Ortonville?

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

Radon mitigation in Ortonville 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 Ortonville?

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.