What EPA's radon map says about Bowie County

Bowie County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally, Bowie County ranks higher in radon potential than 26% of rated counties (the 26th percentile).

Bowie County by the numbers

About 91,992 people live in Bowie County, Texas, spread over 884.94 square miles. That works out to roughly 104 people per square mile. Among counties sharing Bowie County's EPA zone, it outranks 78% of them by population. EPA's geology-based Region 6 groups Bowie County with 502 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Bowie County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. Don't read Zone 3 as a pass for Bowie County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Bowie County

Mitigation cost doesn't depend on Bowie 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 Texas's state radon program

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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Bowie County carries, the zone explainer covers what it does and doesn't tell you about any one house.