Is Tensas Parish, LA a radon risk area?

EPA places Tensas 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. Rank it against the rest of the country and Tensas Parish lands in the 2nd percentile for radon potential.

Where Tensas Parish sits nationally

About 3,844 people live in Tensas Parish, Louisiana, spread over 603.302 square miles. Population density there runs about 6 people per square mile. Rank 961 by population within its EPA zone puts Tensas Parish at the 7th percentile among zone peers. Geologically, Tensas Parish is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

Zone vs. an actual test

A Zone 3 county like Tensas Parish is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. A Zone 3 label describes Tensas Parish's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Next steps for a home in Tensas Parish

Nothing about Tensas 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

Tensas Parish's test kit answers today; a Airthings radon monitor keeps answering for Tensas Parish 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 Tensas Parish's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.