What EPA's radon map says about Rutherford County

Rutherford County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally, Rutherford County ranks higher in radon potential than 57% of rated counties (the 57th percentile).

Rutherford County by the numbers

About 65,587 people live in Rutherford County, North Carolina, spread over 565.437 square miles. Averaged across its land area, Rutherford County runs about 116 people per square mile. Among counties sharing Rutherford County's EPA zone, it outranks 72% of them by population. Geologically, Rutherford County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

What this actually means for a house in Rutherford County

Rutherford County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. Nothing about a Zone 2 label lowers the case for testing in Rutherford County — EPA recommends it in every zone, moderate included.

Next steps for a home in Rutherford County

Mitigation cost doesn't depend on Rutherford 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 North Carolina's state radon program

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

More on how this number was built

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.