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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

St Croix County

54002 77 11 3 2.8 12.6
  54005 10 0 0 1.7 2.4
  54007 9 3 1 4.8 14.3
  54012 7 0 0 1.8 3.6
  54013 26 4 0 2.7 9.9
  54015 20 1 0 1.7 6.1
  54016 340 114 42 7.9 938.0
  54017 181 69 33 6.6 53.1
  54022 158 56 12 4.8 31.2
  54023 74 17 10 4.8 37.8
  54025 30 12 1 4.2 11.6
  54026 11 6 0 4.8 9.4
  54027 9 2 0 2.5 7.3
  54028 24 4 1 2.8 12.4
  54032 1 1 0 4.5 4.5
  54041 1 0 0 0.5 0.5
  54043 1 0 0 1.6 1.6
  54061 1 1 0 4.1 4.1
  54082 18 11 1 5.5 14.1
  54734 8 1 0 2.0 4.3
  54749 5 2 0 3.7 6.5
  54767 16 4 4 6.9 28.8
  54997 1 0 1 30.7 30.7

County Totals

 

1028

319

109

 

938.0

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

 

 

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