Cheatham County, TN: EPA's radon zone, explained

EPA's own radon map rates Cheatham County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally, Cheatham County ranks higher in radon potential than 54% of rated counties (the 54th percentile).

Where Cheatham County sits nationally

Cheatham County, Tennessee is home to about 42,604 people across 302.498 square miles. Population density there runs about 141 people per square mile. By population, Cheatham County is the 384th largest of every county sharing its EPA zone — the 63rd percentile by population within that zone. Cheatham County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Cheatham County

Cheatham County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Middle-of-the-pack doesn't mean risk-free for any one Cheatham County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Cheatham County

For a Cheatham 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 Tennessee's state radon program

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

Where Cheatham 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 Cheatham County carries, the zone explainer covers what it does and doesn't tell you about any one house.