Drew County, AR: EPA's radon zone, explained

Drew 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 Drew County lands in the 11th percentile for radon potential.

Drew County by the numbers

Drew County, Arkansas is home to about 16,935 people across 828.667 square miles. Population density there runs about 20 people per square mile. By population, Drew County is the 680th largest of every county sharing its EPA zone — the 34th percentile by population within that zone. EPA's geology-based Region 6 groups Drew County with 502 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Drew 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 Drew County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Next steps for a home in Drew County

For a Drew County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Arkansas's state radon program

For Drew County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Drew County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

Where Drew County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Drew County's numbers. Whatever zone Drew County carries, the zone explainer covers what it does and doesn't tell you about any one house.