Is Lander County, NV a radon risk area?

EPA's own radon map rates Lander County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Rank it against the rest of the country and Lander County lands in the 72nd percentile for radon potential.

Where Lander County sits nationally

About 5,785 people live in Lander County, Nevada, spread over 5,519.247 square miles. Population density there runs about 1 people per square mile. Rank 891 by population within its EPA zone puts Lander County at the 16th percentile among zone peers. EPA's geology-based Region 9 groups Lander County with 94 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Lander County carries a Zone 1 label because its predicted average clears 4 pCi/L outright — three-plus times the 0.4 pCi/L typical outdoors and above the 1.3 pCi/L most homes see. Some Lander County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Testing and mitigation in Lander County

Nothing about Lander County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Nevada's state radon program

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

Lander County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Lander County carries, the zone explainer covers what it does and doesn't tell you about any one house.