Kandiyohi County, MN radon potential

EPA's own radon map rates Kandiyohi County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Kandiyohi County ranks higher in radon potential than 89% of rated counties (the 89th percentile).

How Kandiyohi County compares

Kandiyohi County, Minnesota is home to about 44,674 people across 797.352 square miles. Population density there runs about 56 people per square mile. Within its own EPA zone, Kandiyohi County is bigger by population than 67% of the counties that share it. Kandiyohi County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Kandiyohi 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 Kandiyohi County specifically.

Testing and mitigation in Kandiyohi 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 Kandiyohi County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Kandiyohi 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 Kandiyohi 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.