Corunna, MI Radon Levels

Q: What EPA Radon Zone is Corunna in?

Corunna is in Shiawassee County, EPA Zone 2.

Q: How much does radon mitigation cost in Corunna?

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

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

Corunna, MI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Shiawassee County, MI

Zip Code 48817

Located in Shiawassee County in central Michigan's agricultural region, Corunna sits atop glacial deposits that can produce moderate radon levels throughout the state. With current testing data unavailable for zip code 48817, residents should prioritize radon measurement given Michigan's geological radon potential. The community's mix of historic downtown homes and rural properties presents varying foundation types that can influence radon accumulation patterns.

8.53

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 8.53 pCi/L, based on 15 tests from 10 nearby cities. No readings have been submitted for Corunna 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+

Corunna, 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 Corunna, MI

No homeowner tests have been submitted for Corunna 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
Flushing	9.6 mi	7.50 pCi/L	2
Swartz Creek	12.5 mi	10.00 pCi/L	1
Flint	15.8 mi	9.00 pCi/L	3
Linden	19.7 mi	3.50 pCi/L	2
Grand Blanc	22.1 mi	4.00 pCi/L	1
Fenton	23.3 mi	4.00 pCi/L	1
Frankenmuth	25.1 mi	19.00 pCi/L	1
Fowlerville	26.4 mi	13.00 pCi/L	1

Shiawassee County Radon Profile

Shiawassee County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. User-submitted readings are still sparse within Shiawassee 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 Shiawassee County.

Radon FAQ for Corunna, MI

What EPA Radon Zone is Corunna in?

Corunna and the 48817 zip code are in Shiawassee County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Corunna?

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

Radon mitigation in Corunna 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 Corunna?

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.