Winthrop, AR Radon Levels

Q: What EPA Radon Zone is Winthrop in?

Winthrop is in Little River County, EPA Zone 3.

Q: How much does radon mitigation cost in Winthrop?

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

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

Winthrop, AR Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Little River County, AR

Zip Code 71866

Positioned in Little River County near Arkansas's southwestern border, Winthrop sits on Coastal Plain sedimentary formations typical of the region's geology. The rural community's housing stock includes older farmhouses and newer construction, with many homes featuring pier and beam or slab-on-grade foundations suited to the local soil conditions. Since radon testing data is not currently available for zip code 71866, homeowners should consider individual testing to understand their specific radon exposure potential.

Winthrop, AR Radon Mitigation

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

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Radon FAQ for Winthrop, AR

What EPA Radon Zone is Winthrop in?

Winthrop and the 71866 zip code are in Little River 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 Winthrop?

Radon mitigation in Winthrop 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 Winthrop?

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 in Arkansas with the most user-submitted radon test data, ranked by number of submissions.

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