Saint Johns, MI Radon Levels

Q: What EPA Radon Zone is Saint Johns in?

Saint Johns is in Clinton County, EPA Zone 2.

Q: How much does radon mitigation cost in Saint Johns?

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

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

Saint Johns, MI Radon Facts

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

County Clinton County, MI

Zip Code 48879

Positioned in central Michigan's Clinton County within the Lansing Metro area, Saint Johns falls under EPA Zone 2 classification with moderate radon potential expected. Testing data for the 48879 zip code remains limited despite the region's glacial geology over limestone bedrock. The community's mix of mid-century suburban homes and rural properties, many featuring full or partial basements common in Michigan construction, makes radon testing an important health consideration for area residents.

20.00

pCi/L area average

Above EPA Action Level

Clinton County average: 20.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Saint Johns 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 Johns, 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 Saint Johns?

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

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

Radon Readings Near Saint Johns, MI

No homeowner tests have been submitted for Saint Johns 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
Dewitt	11.3 mi	20.00 pCi/L	1
Lansing	19.2 mi	5.00 pCi/L	1
Ithaca	19.2 mi	3.00 pCi/L	1
Grand Ledge	19.4 mi	7.00 pCi/L	2
Haslett	19.5 mi	3.50 pCi/L	2
Okemos	22.2 mi	4.00 pCi/L	1
Holt	25.4 mi	12.00 pCi/L	1
Sunfield	26.4 mi	6.00 pCi/L	1

Clinton County Radon Profile

EPA mapping assigns Clinton 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 1 city in Clinton County average 20.00 pCi/L across 1 test — 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 Clinton County home regardless of zone or a neighbor's results.

Radon FAQ for Saint Johns, MI

What EPA Radon Zone is Saint Johns in?

Saint Johns and the 48879 zip code are in Clinton 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 Saint Johns?

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

Radon mitigation in Saint Johns 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 Johns?

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.