What EPA's radon map says about Pershing County

EPA places Pershing County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Pershing County sits at the 72nd percentile nationally for radon potential — above 72 of every 100 rated counties.

Pershing County by the numbers

About 6,536 people live in Pershing County, Nevada, spread over 6,036.589 square miles. Population density there runs about 1 people per square mile. Among counties sharing Pershing County's EPA zone, it outranks 19% of them by population. Geologically, Pershing County is grouped into EPA Region 9 alongside 94 other counties that share its rock and soil setting.

Zone vs. an actual test

Pershing County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. Being in Zone 1 raises the odds Pershing County homes test above the action level, but it does not mean any specific house does — EPA recommends every home be tested, in every zone, because the only way to know is to test.

Testing and mitigation in Pershing County

Mitigation cost doesn't depend on Pershing 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

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

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Pershing County's numbers. Whatever zone Pershing County carries, the zone explainer covers what it does and doesn't tell you about any one house.