Is Moore County, TX a radon risk area?

EPA places Moore County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Moore County in the 47th percentile nationally for radon potential — higher than 47% of the counties EPA has rated.

Moore County by the numbers

About 21,872 people live in Moore County, Texas, spread over 899.698 square miles. Population density there runs about 24 people per square mile. Rank 595 by population within its EPA zone puts Moore County at the 42nd percentile among zone peers. Moore County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Moore County's Zone 2 prediction. Moore County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Testing and mitigation in Moore County

Nothing about Moore 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

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

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