Is Juneau County, WI a radon risk area?

EPA's own radon map rates Juneau County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Juneau County sits at the 49th percentile nationally for radon potential — above 49 of every 100 rated counties.

Where Juneau County sits nationally

About 26,590 people live in Juneau County, Wisconsin, spread over 767.081 square miles. Averaged across its land area, Juneau County runs about 35 people per square mile. Rank 526 by population within its EPA zone puts Juneau County at the 49th percentile among zone peers. EPA's geology-based Region 5 groups Juneau County with 523 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Juneau County

Juneau 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). Juneau County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Next steps for a home in Juneau County

Nothing about Juneau 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 Wisconsin's state radon program

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

Juneau 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.