What EPA's radon map says about Wabasha County

EPA's own radon map rates Wabasha County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Wabasha County ranks higher in radon potential than 83% of rated counties (the 83rd percentile).

How Wabasha County compares

About 21,574 people live in Wabasha County, Minnesota, spread over 522.965 square miles. Population density there runs about 41 people per square mile. Among counties sharing Wabasha County's EPA zone, it outranks 49% of them by population. Geologically, Wabasha County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Wabasha County carries a Zone 1 label because its predicted average clears 4 pCi/L outright — three-plus times the 0.4 pCi/L typical outdoors and above the 1.3 pCi/L most homes see. That doesn't mean every Wabasha County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

Next steps for a home in Wabasha County

Mitigation cost doesn't depend on Wabasha County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Minnesota's state radon program

Wabasha County's test kit answers today; a Airthings radon monitor keeps answering for Wabasha 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 Wabasha County's numbers. Whatever zone Wabasha County carries, the zone explainer covers what it does and doesn't tell you about any one house.