Cleveland County, AR radon potential

EPA's own radon map rates Cleveland County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Cleveland County sits at the 4th percentile nationally for radon potential — above 4 of every 100 rated counties.

Where Cleveland County sits nationally

Cleveland County, Arkansas is home to about 7,367 people across 597.91 square miles. Averaged across its land area, Cleveland County runs about 12 people per square mile. Within its own EPA zone, Cleveland County is bigger by population than 13% of the counties that share it. Geologically, Cleveland County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Cleveland County's Zone 3 prediction is the low end of the scale. A Zone 3 label describes Cleveland County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

If Cleveland County tests above the action level

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Arkansas's state radon program

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

Where Cleveland County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Cleveland County carries, the zone explainer covers what it does and doesn't tell you about any one house.