Is Waupaca County, WI a radon risk area?

EPA's own radon map rates Waupaca County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Waupaca County ranks higher in radon potential than 90% of rated counties (the 90th percentile).

How Waupaca County compares

About 51,171 people live in Waupaca County, Wisconsin, spread over 747.702 square miles. That works out to roughly 68 people per square mile. Rank 310 by population within its EPA zone puts Waupaca County at the 71st percentile among zone peers. Waupaca County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Waupaca County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. Some Waupaca County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Next steps for a home in Waupaca County

Nothing about Waupaca 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

Waupaca County's test kit answers today; a Airthings radon monitor keeps answering for Waupaca 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 Waupaca County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.