Saint Charles, AR Radon Mitigation and Testing

Q: What EPA Radon Zone is Saint Charles in?

Saint Charles is in Arkansas County, EPA Zone 3.

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.

Arkansas County

EPA Zone 3

Saint Charles in Arkansas County sits in the Arkansas River valley where alluvial deposits over deeper sedimentary formations create generally lower radon potential. Testing data for zip code 72140 remains unavailable, though the area's EPA Zone 3 classification suggests typically lower radon levels. Agricultural homes in this delta region, whether on piers or slabs, can still benefit from radon testing to ensure indoor air quality.

Saint Charles, AR Radon Mitigation

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

Saint Charles, AR Radon Testing

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

Saint Charles Radon Facts

Key details about the radon risk profile for Saint Charles and the 72140 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Arkansas County, AR

Zip Code

72140

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Saint Charles and the 72140 zip code are located in Arkansas County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Saint Charles, AR

What EPA Radon Zone is Saint Charles in?

Saint Charles and the 72140 zip code are in Arkansas 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.

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.

Most Active Radon Markets in Arkansas

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

City	Avg User Radon Level	Submissions
Hot Springs Village	11.60 pCi/L	5
Bentonville	4.00 pCi/L	4
Bella Vista	13.67 pCi/L	3
Little Rock	7.00 pCi/L	1