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RADON MEASUREMENTS TABLE BY COUNTY AND ZIP CODE

The numbers of results at various radon levels, tabulated below, are from measurements in basements, up to a week in duration, while windows are kept closed.  Because there is less radon upstairs and less when windows are open, this table represents neither average resident exposures nor their lung cancer risks from radon.  

The data were obtained largely from companies that sell radon detectors to the public, and are only a fraction of all radon measurements that have been made in Wisconsin.

For estimating the fraction of houses with average occupant exposures greater than 4 pCi/L for the radon averaged over a year on the main floor: divide the number in the “>10 pCi/L” column by the number in the “Total No.” (of measurements) column.  For more information on that relationship, click here. 

The data listed for Zip Codes crosses county borders.

Wisconsin Measurement Summary - 2006

Numbers of Measurements versus Radon:

County

Zip
Code

No. of Measurements

Ave.
pCi\L

High
pCi\L

Total
No.

# 4 - 10
pCi\L*

# >10
pCi\L

Bayfield County

54517 2 0 0 2.5 3.1
  54806 117 14 2 1.9 12.8
  54814 72 2 4 2.2 30.9
  54820 5 1 0 2.2 4.0
  54821 26 10 0 3.2 8.5
  54827 8 0 0 0.5 1.1
  54832 7 4 0 3.6 6.3
  54838 7 3 0 2.7 5.0
  54839 2 0 0 0.8 1.6
  54843 224 56 4 3.0 16.1
  54844 8 0 1 3.0 14.5
  54847 27 8 1 4.7 30.1
  54855 7 0 0 0.8 1.8
  54856 19 0 0 1.2 3.3
  54859 4 0 0 1.7 2.4
  54865 1 0 1 11.9 11.9
  54873 18 4 0 3.2 9.5
  54891 74 7 6 2.7 24.2

County Totals

 

628

109

19

 

30.9

      * pCi/L: picoCuries per Liter, a measure of radon concentration

 

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