What EPA's radon map says about Mineral County

EPA's own radon map rates Mineral County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Mineral County sits at the 70th percentile nationally for radon potential — above 70 of every 100 rated counties.

Mineral County by the numbers

About 4,475 people live in Mineral County, Nevada, spread over 3,751.283 square miles. Averaged across its land area, Mineral County runs about 1 people per square mile. Among counties sharing Mineral County's EPA zone, it outranks 12% of them by population. EPA's geology-based Region 9 groups Mineral County with 94 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Mineral County

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Mineral County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. That doesn't mean every Mineral County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

Testing and mitigation in Mineral County

Mitigation cost doesn't depend on Mineral 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

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

The methodology guide shows exactly which EPA and Census sources feed Mineral County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.