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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 over many years, 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.

Estimate the fraction of houses with average occupant exposures (house bottom to top) greater than 4 pCi/L for the radon averaged over a year: divide the number in the “>10 pCi/L” column by the “Total No.” (of measurements) column.  (Average between basement and 1st floor: 40%)  For further information on the relationship,  click here.

The data listed for Zip Codes crosses county borders.

Wisconsin Measurement Summary - 2009

Numbers of Measurements versus Radon:

 

County

Zip
Code

No. of Measurements

High
pCi\L

Total
No.

#  4 - 10
pCi\L*

#  >10
pCi\L

Washington County

53002 27 9 1 16.5
  53010 52 15 5 14.9
  53012 590 236 77 29.4
  53017 337 93 144 120.0
  53021 70 25 7 240.0
  53022 407 145 57 42.6
  53027 271 98 46 56.6
  53033 164 56 45 80.0
  53037 169 65 10 46.0
  53040 93 34 8 22.5
  53060 5 2 0 6.9
  53076 86 38 20 36.1
  53086 109 39 28 45.8
  53090 241 58 19 54.7
  53091 14 4 5 27.6
  53095 794 177 78 62.8

County Totals

 

3,249

1,094

550

 

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

 

 

 

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