Ontonagon, MI Radon Levels

Q: What EPA Radon Zone is Ontonagon in?

Ontonagon is in Ontonagon County, EPA Zone 3.

Q: Why are radon readings shown from areas near Ontonagon?

No homeowner radon tests have been submitted for Ontonagon yet, so readings from the closest cities and the Ontonagon County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Ontonagon?

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

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

Ontonagon, MI Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Ontonagon County, MI

Zip Code 49953

Ontonagon residents in Ontonagon County have minimal radon testing data available for the 49953 zip code. Michigan's Upper Peninsula features Precambrian bedrock and glacial soils that can produce variable radon levels, though typically lower than southern Michigan. Testing helps establish your home's individual risk profile.

6.25

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.25 pCi/L, based on 4 tests from 4 nearby cities. No readings have been submitted for Ontonagon 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+

Ontonagon, MI 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 Ontonagon, MI

No homeowner tests have been submitted for Ontonagon 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
Marenisco	36.2 mi	10.00 pCi/L	1
Houghton	42.3 mi	3.00 pCi/L	1
Hancock	42.6 mi	5.00 pCi/L	1
Calumet	42.7 mi	7.00 pCi/L	1

Ontonagon County Radon Profile

Ontonagon County is classified as EPA Radon Zone 3, the lowest predicted-risk tier, with modeled indoor screening averages below 2 pCi/L. User-submitted readings are still sparse within Ontonagon County itself, so the nearby measurements shown on this page provide the closest real-world picture of local radon conditions. 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 Ontonagon County.

Radon FAQ for Ontonagon, MI

What EPA Radon Zone is Ontonagon in?

Ontonagon and the 49953 zip code are in Ontonagon County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

Why are radon readings shown from areas near Ontonagon?

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

Radon mitigation in Ontonagon 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 Ontonagon?

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.