Is Valley County, NE a radon risk area?

EPA places Valley 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. Nationally, Valley County ranks higher in radon potential than 35% of rated counties (the 35th percentile).

Valley County by the numbers

About 4,032 people live in Valley County, Nebraska, spread over 568.09 square miles. That works out to roughly 7 people per square mile. Rank 959 by population within its EPA zone puts Valley County at the 7th percentile among zone peers. EPA's geology-based Region 7 groups Valley County with 411 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Valley County's Zone 2 prediction. Nothing about a Zone 2 label lowers the case for testing in Valley County — EPA recommends it in every zone, moderate included.

Next steps for a home in Valley County

Nothing about Valley 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

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

Valley County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.