Is East Feliciana Parish, LA a radon risk area?

EPA places East Feliciana Parish in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, East Feliciana Parish ranks higher in radon potential than 13% of rated counties (the 13th percentile).

Where East Feliciana Parish sits nationally

About 19,112 people live in East Feliciana Parish, Louisiana, spread over 453.293 square miles. Population density there runs about 42 people per square mile. Rank 638 by population within its EPA zone puts East Feliciana Parish at the 38th percentile among zone peers. Geologically, East Feliciana Parish is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

East Feliciana Parish's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. A Zone 3 rating means East Feliciana Parish's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

Testing and mitigation in East Feliciana Parish

Nothing about East Feliciana Parish'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 Louisiana's state radon program

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