Mower County, MN radon potential

EPA's own radon map rates Mower County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 88th percentile for radon potential — Mower County outranks 88% of every county EPA has rated.

Where Mower County sits nationally

Mower County, Minnesota is home to about 40,900 people across 711.273 square miles. Population density there runs about 58 people per square mile. Within its own EPA zone, Mower County is bigger by population than 65% of the counties that share it. Mower County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Mower County

Mower County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. Some Mower 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.

If Mower County tests above the action level

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

Where Mower County's figures come from

Mower County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.