Is Potter County, TX a radon risk area?

Potter County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Rank it against the rest of the country and Potter County lands in the 60th percentile for radon potential.

Where Potter County sits nationally

About 114,649 people live in Potter County, Texas, spread over 908.401 square miles. Population density there runs about 126 people per square mile. Rank 177 by population within its EPA zone puts Potter County at the 83rd percentile among zone peers. EPA's geology-based Region 6 groups Potter County with 502 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Potter County's Zone 2 prediction lands in the gap between the two. A county-wide moderate average, like Potter County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Testing and mitigation in Potter County

Nothing about Potter 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 Texas's state radon program

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

Potter County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.