Lamar, AR Radon Mitigation and Testing

Q: What EPA Radon Zone is Lamar in?

Lamar is in Johnson County, EPA Zone 3.

Q: How much does radon mitigation cost in Lamar?

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

Johnson County

EPA Zone 3

Nestled in Johnson County within the Arkansas River Valley region, Lamar (72846) sits on Pennsylvanian-era sedimentary formations that typically produce low-to-moderate radon levels. Testing data for this small community remains limited, making individual property assessment important for homeowners. The area's modest housing stock includes many older homes with partial basements or pier foundations that can still facilitate radon entry under certain conditions.

Lamar, AR Radon Mitigation

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

Lamar, AR Radon Testing

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

Lamar Radon Facts

Key details about the radon risk profile for Lamar and the 72846 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Johnson County, AR

Zip Code

72846

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Lamar and the 72846 zip code are located in Johnson 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 Lamar, AR

What EPA Radon Zone is Lamar in?

Lamar and the 72846 zip code are in Johnson 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 Lamar?

Radon mitigation in Lamar 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 Lamar?

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