Saint Johns, MI Radon Mitigation and Testing

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.

Clinton County

EPA Zone 2

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.

Saint Johns, MI Radon Mitigation

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

Saint Johns, MI Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Saint Johns Radon Facts

Key details about the radon risk profile for Saint Johns and the 48879 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Clinton County, MI

Zip Code

48879

Predicted Screening Level

2–4 pCi/L (Zone 2)

Saint Johns and the 48879 zip code are located in Clinton County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

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.

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.

Most Active Radon Markets in Michigan

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Novi	5.00 pCi/L	7
Rochester	9.00 pCi/L	5
Battle Creek	6.60 pCi/L	5
White Lake	10.00 pCi/L	4
Ypsilanti	8.50 pCi/L	4
Waterford	7.75 pCi/L	4
Howell	7.50 pCi/L	4
Gaylord	6.00 pCi/L	4
Gladstone	5.25 pCi/L	4
West Bloomfield	5.25 pCi/L	4
Clarkston	5.00 pCi/L	4
Flint	9.00 pCi/L	3
Pinckney	7.33 pCi/L	3
Northville	5.33 pCi/L	3
Milford	4.33 pCi/L	3
Plymouth	4.33 pCi/L	3
Portage	3.33 pCi/L	3
Lake Orion	11.00 pCi/L	2
Oxford	11.00 pCi/L	2
Grand Ledge	7.00 pCi/L	2