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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.

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

Walworth County

53105 426 154 53 64.0
  53114 40 13 15 20.0
  53115 290 114 37 52.3
  53119 143 44 48 57.4
  53120 154 51 28 55.1
  53121 335 109 60 43.9
  53125 63 25 4 30.1
  53128 46 20 2 12.9
  53138 4 0 0 1.7
  53147 343 88 46 37.0
  53148 12 5 3 18.4
  53149 489 182 67 35.2
  53157 14 7 1 10.3
  53176 4 1 2 31.9
  53184 51 13 13 23.4
  53190 152 35 28 43.9
  53191 84 30 18 24.8
  53525 51 11 8 28.2
  53585 27 9 2 59.1

County Totals

 

2,728

911

435

 

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

 

 

 

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