Newfolden, MN Radon Levels

Q: What EPA Radon Zone is Newfolden in?

Newfolden is in Marshall County, EPA Zone 1.

Q: How much does radon mitigation cost in Newfolden?

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

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

Newfolden, MN Radon Facts

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

County Marshall County, MN

Zip Code 56738

Positioned in rural Marshall County along Minnesota's northern border, Newfolden sits atop glacial lake sediments and till deposits from ancient Lake Agassiz. Testing data for zip code 56738 remains sparse, making individual home testing essential for residents. The area's clay-rich soils over Precambrian bedrock can trap and concentrate naturally occurring radon gas.

7.33

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.33 pCi/L, based on 3 tests from 3 nearby cities. No readings have been submitted for Newfolden 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+

Newfolden, 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 Newfolden, MN

No homeowner tests have been submitted for Newfolden 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	12.3 mi	9.00 pCi/L	1
Roseau	36.8 mi	6.00 pCi/L	1
Crookston	38.5 mi	7.00 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 Newfolden, MN

What EPA Radon Zone is Newfolden in?

Newfolden and the 56738 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 Newfolden?

No homeowner radon tests have been submitted for Newfolden 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 Newfolden 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 Newfolden?

Radon mitigation in Newfolden 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 Newfolden?

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.