Onondaga, MI Radon Levels

Q: What EPA Radon Zone is Onondaga in?

Onondaga is in Ingham County, EPA Zone 2.

Q: How much does radon mitigation cost in Onondaga?

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

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

Onondaga, MI Radon Facts

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

County Ingham County, MI

Zip Code 49264

Straddling both the Jackson and Lansing metropolitan areas in Ingham County, Onondaga sits over Michigan's glacial till deposits and limestone bedrock that create moderate-to-high radon potential. The community's housing stock spans from rural farmsteads to suburban developments, most featuring full basements typical of Michigan construction. Since comprehensive radon testing data for zip code 49264 remains limited, homeowners should prioritize testing to establish their individual radon exposure levels.

5.80

pCi/L area average

Above EPA Action Level

Ingham County average: 5.80 pCi/L, based on 5 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Onondaga 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+

Onondaga, MI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Onondaga?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Ingham County Pros

1-800-299-3578 517-222-0145 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Onondaga, MI

No homeowner tests have been submitted for Onondaga 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
Rives Junction	6.4 mi	5.00 pCi/L	1
Mason	10.3 mi	6.00 pCi/L	1
Pleasant Lake	11.5 mi	13.00 pCi/L	1
Holt	13.3 mi	12.00 pCi/L	1
Jackson	15.8 mi	7.00 pCi/L	1
Munith	16.5 mi	3.00 pCi/L	1
Charlotte	16.6 mi	12.00 pCi/L	2
Spring Arbor	16.7 mi	20.00 pCi/L	1

Ingham County Radon Profile

EPA mapping assigns Ingham County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 4 cities in Ingham County average 5.80 pCi/L across 5 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 Ingham County home regardless of zone or a neighbor's results.

Radon FAQ for Onondaga, MI

What EPA Radon Zone is Onondaga in?

Onondaga and the 49264 zip code are in Ingham 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 Onondaga?

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

Radon mitigation in Onondaga 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 Onondaga?

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.