What EPA's radon map says about Hot Spring County

EPA's own radon map rates Hot Spring County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Hot Spring County sits at the 18th percentile nationally for radon potential — above 18 of every 100 rated counties.

How Hot Spring County compares

About 33,313 people live in Hot Spring County, Arkansas, spread over 614.944 square miles. Population density there runs about 54 people per square mile. Among counties sharing Hot Spring County's EPA zone, it outranks 56% of them by population. Hot Spring County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Hot Spring County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. A Zone 3 label describes Hot Spring County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Testing and mitigation in Hot Spring County

Mitigation cost doesn't depend on Hot Spring County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Arkansas's state radon program

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

More on how this number was built

Hot Spring County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.