Middle River, MN Radon Levels

Q: What EPA Radon Zone is Middle River in?

Middle River is in Marshall County, EPA Zone 1.

Q: How much does radon mitigation cost in Middle River?

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

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

Middle River, MN Radon Facts

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

County Marshall County, MN

Zip Code 56737

Situated in Marshall County within Minnesota's northwestern prairie region, Middle River sits where glacial lake deposits and underlying bedrock create variable radon conditions. Testing data for zip code 56737 is currently unavailable, emphasizing the importance of individual radon assessments. The area's agricultural landscape and seasonal temperature variations can affect indoor radon accumulation.

7.50

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.50 pCi/L, based on 2 tests from 2 nearby cities. No readings have been submitted for Middle River 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+

Middle River, 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 Middle River, MN

No homeowner tests have been submitted for Middle River 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
Thief River Falls	22.5 mi	9.00 pCi/L	1
Roseau	24.9 mi	6.00 pCi/L	1

Marshall County Radon Profile

Because of its underlying geology, Marshall 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 Marshall 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 Marshall County home regardless of zone or a neighbor's results.

Radon FAQ for Middle River, MN

What EPA Radon Zone is Middle River in?

Middle River and the 56737 zip code are in Marshall 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 Middle River?

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

Radon mitigation in Middle River 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 Middle River?

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.