Waseca County, MN radon potential

Waseca County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Waseca County ranks higher in radon potential than 81% of rated counties (the 81st percentile).

Where Waseca County sits nationally

Waseca County, Minnesota is home to about 18,684 people across 423.361 square miles. Population density there runs about 44 people per square mile. Within its own EPA zone, Waseca County is bigger by population than 45% of the counties that share it. Geologically, Waseca 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

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Waseca County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. 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 Waseca County specifically.

Next steps for a home in Waseca County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Minnesota's state radon program

For Waseca County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Waseca County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Waseca County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.