What EPA's radon map says about Tate County

EPA's own radon map rates Tate County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally that's the 17th percentile for radon potential — Tate County outranks 17% of every county EPA has rated.

Where Tate County sits nationally

About 28,551 people live in Tate County, Mississippi, spread over 404.763 square miles. Population density there runs about 71 people per square mile. Among counties sharing Tate County's EPA zone, it outranks 52% of them by population. EPA's geology-based Region 4 groups Tate County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Tate 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 Tate County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Tate County

Mitigation cost doesn't depend on Tate 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 Mississippi's state radon program

Tate County's test kit answers today; a Airthings radon monitor keeps answering for Tate 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. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.