Is Scott County, AR a radon risk area?

Scott County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Rank it against the rest of the country and Scott County lands in the 7th percentile for radon potential.

Where Scott County sits nationally

About 9,837 people live in Scott County, Arkansas, spread over 892.85 square miles. Population density there runs about 11 people per square mile. Rank 825 by population within its EPA zone puts Scott County at the 20th percentile among zone peers. EPA's geology-based Region 6 groups Scott County with 502 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Scott County

A Zone 3 county like Scott County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. A Zone 3 rating means Scott County's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

Testing and mitigation in Scott County

Nothing about Scott County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Arkansas's state radon program

Scott County's test kit answers today; a Airthings radon monitor keeps answering for Scott County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Scott County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.