What EPA's radon map says about Appomattox County

EPA's own radon map rates Appomattox County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Appomattox County ranks higher in radon potential than 80% of rated counties (the 80th percentile).

How Appomattox County compares

About 16,957 people live in Appomattox County, Virginia, spread over 334.224 square miles. That works out to roughly 51 people per square mile. Among counties sharing Appomattox County's EPA zone, it outranks 42% of them by population. EPA's geology-based Region 3 groups Appomattox County with 244 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Appomattox County

Where the national indoor average runs about 1.3 pCi/L, Appomattox County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Appomattox County specifically.

If Appomattox County tests above the action level

Mitigation cost doesn't depend on Appomattox 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 Virginia's state radon program

Appomattox County's test kit answers today; a Airthings radon monitor keeps answering for Appomattox 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. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.