What EPA's radon map says about Churchill County

EPA's own radon map rates Churchill County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Rank it against the rest of the country and Churchill County lands in the 49th percentile for radon potential.

Churchill County by the numbers

About 26,033 people live in Churchill County, Nevada, spread over 4,950.157 square miles. That works out to roughly 5 people per square mile. Among counties sharing Churchill County's EPA zone, it outranks 48% of them by population. EPA's geology-based Region 9 groups Churchill County with 94 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Churchill 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). A county-wide moderate average, like Churchill County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Next steps for a home in Churchill County

Mitigation cost doesn't depend on Churchill 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 Nevada's state radon program

Churchill County's test kit answers today; a Airthings radon monitor keeps answering for Churchill 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.