Is Pontotoc County, MS a radon risk area?

EPA places Pontotoc 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. Pontotoc County sits at the 51st percentile nationally for radon potential — above 51 of every 100 rated counties.

Where Pontotoc County sits nationally

About 32,014 people live in Pontotoc County, Mississippi, spread over 497.813 square miles. That works out to roughly 64 people per square mile. Rank 469 by population within its EPA zone puts Pontotoc County at the 55th percentile among zone peers. Geologically, Pontotoc County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

What this actually means for a house in Pontotoc County

Pontotoc County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Pontotoc County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Pontotoc County

Nothing about Pontotoc 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 Mississippi's state radon program

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

More on how this number was built

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