Is Nance County, NE a radon risk area?

Nance County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally that's the 69th percentile for radon potential — Nance County outranks 69% of every county EPA has rated.

Where Nance County sits nationally

About 3,262 people live in Nance County, Nebraska, spread over 441.595 square miles. That works out to roughly 7 people per square mile. Rank 975 by population within its EPA zone puts Nance County at the 8th percentile among zone peers. Geologically, Nance County is grouped into EPA Region 7 alongside 411 other counties that share its rock and soil setting.

What this actually means for a house in Nance County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Nance County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Nance County specifically.

Testing and mitigation in Nance County

Nothing about Nance 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

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

Nance County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Nance County carries, the zone explainer covers what it does and doesn't tell you about any one house.