Is Borden County, TX a radon risk area?

Borden County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Borden County sits at the 0th percentile nationally for radon potential — above 0 of every 100 rated counties.

How Borden County compares

About 557 people live in Borden County, Texas, spread over 897.443 square miles. Averaged across its land area, Borden County runs about 1 people per square mile. Rank 1024 by population within its EPA zone puts Borden County at the 1st percentile among zone peers. Geologically, Borden County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

Zone vs. an actual test

A Zone 3 county like Borden County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. Don't read Zone 3 as a pass for Borden County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Borden County

Nothing about Borden 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

Borden County's test kit answers today; a Airthings radon monitor keeps answering for Borden County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 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. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.