Is Keya Paha County, NE a radon risk area?

EPA places Keya Paha 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. Keya Paha County sits at the 33rd percentile nationally for radon potential — above 33 of every 100 rated counties.

Where Keya Paha County sits nationally

About 819 people live in Keya Paha County, Nebraska, spread over 772.876 square miles. That works out to roughly 1 people per square mile. Rank 1025 by population within its EPA zone puts Keya Paha County at the 1st percentile among zone peers. EPA's geology-based Region 7 groups Keya Paha County with 411 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Keya Paha 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). Middle-of-the-pack doesn't mean risk-free for any one Keya Paha County address — a moderate county average still leaves individual homes to test either side of it.

If Keya Paha County tests above the action level

Nothing about Keya Paha 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 Nebraska's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Keya Paha County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.