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Minnesota radon levels by county

Minnesota Radon Levels by County

Minnesota has some of the highest indoor radon in the country — and it varies sharply by county. Below is the measured average for every Minnesota county we serve (CDC test data, 2008–2017), compared to the U.S. average of 1.3 pCi/L and the EPA action level of 4.0. Find your county to see what's typical and what to do next.

County Avg radon (pCi/L) vs U.S. Status
Hennepin County → 4.4 3.4× Above action level
Ramsey County → 4.4 3.4× Above action level
Olmsted County → 4.4 3.4× Above action level
St. Louis County → 4.4 3.4× Above action level
Stearns County → 4.4 3.4× Above action level
Washington County → 4.4 3.4× Above action level
Dakota County → 4.4 3.4× Above action level
Blue Earth County → 4.4 3.4× Above action level

Source: CDC National Environmental Public Health Tracking Network — mean pre-mitigation radon level in tested buildings, Minnesota, 2008–2017. Every home should be tested regardless of county average.

Find Out Your Home's Radon Level

Minnesota Radon Experts routes you to an NRPP-certified Minnesota partner contractor for testing or mitigation. Free quote.

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