Saint Charles, MI Radon Levels

Q: What EPA Radon Zone is Saint Charles in?

Saint Charles is in Saginaw County, EPA Zone 3.

Q: Why are radon readings shown from areas near Saint Charles?

No homeowner radon tests have been submitted for Saint Charles yet, so readings from the closest cities and the Saginaw 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 Saint Charles?

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

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

Saint Charles, MI Radon Facts

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

County Saginaw County, MI

Zip Code 48655

Nestled in Saginaw County within the Saginaw Metro area, Saint Charles currently has limited radon testing data for zip code 48655. Michigan's glacial geology can create unpredictable radon conditions, making individual home testing essential for accurate assessment. Given the state's varied geological formations and diverse housing stock, residents should prioritize radon testing regardless of neighborhood assumptions about risk levels.

14.67

pCi/L area average

Above EPA Action Level

Saginaw County average: 14.67 pCi/L, based on 3 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Saint Charles itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Saint Charles, 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 Saint Charles, MI

No homeowner tests have been submitted for Saint Charles 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
Saginaw	13.3 mi	12.50 pCi/L	2
Frankenmuth	21.1 mi	19.00 pCi/L	1
Flushing	21.8 mi	7.50 pCi/L	2
Ithaca	22.6 mi	3.00 pCi/L	1
Bay City	24.6 mi	2.00 pCi/L	1
Flint	28.6 mi	9.00 pCi/L	3
Swartz Creek	29.1 mi	10.00 pCi/L	1
Grand Blanc	37.0 mi	4.00 pCi/L	1

Saginaw County Radon Profile

The EPA maps Saginaw County as Radon Zone 3, the lowest predicted classification, with modeled indoor screening levels under 2 pCi/L. Homeowner-submitted tests from 2 cities in Saginaw County average 14.67 pCi/L across 3 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Saginaw County home regardless of zone or a neighbor's results.

Radon FAQ for Saint Charles, MI

What EPA Radon Zone is Saint Charles in?

Saint Charles and the 48655 zip code are in Saginaw 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 Saint Charles?

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

Radon mitigation in Saint Charles 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 Saint Charles?

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.