McPherson County, NE Radon Zone Data

Is McPherson County, NE a radon risk area?

EPA places McPherson County 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, McPherson County ranks higher in radon potential than 0% of rated counties (the 0th percentile).

McPherson County by the numbers

About 376 people live in McPherson County, Nebraska, spread over 859.259 square miles. Averaged across its land area, McPherson County runs about 0 people per square mile. Rank 1027 by population within its EPA zone puts McPherson County at the 0th percentile among zone peers. McPherson County falls in EPA Radon Region 7, one of 412 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in McPherson County

McPherson County'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 McPherson County'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.

If McPherson County tests above the action level

Nothing about McPherson 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

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

The methodology guide shows exactly which EPA and Census sources feed McPherson County's numbers. Whatever zone McPherson County carries, the zone explainer covers what it does and doesn't tell you about any one house.