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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

Winnebago County

54901 611 174 60 23.5
  54902 273 102 36 32.1
  54903 6 1 0 6.7
  54904 680 277 138 240.0
  54914 784 294 88 120.0
  54915 1008 402 115 37.1
  54923 133 55 10 30.7
  54927 9 4 0 6.9
  54934 3 0 1 16.9
  54940 46 10 4 27.3
  54947 70 29 22 33.2
  54952 1116 428 166 64.7
  54956 2264 872 454 100.0
  54957 15 3 3 17.2
  54963 109 43 14 27.8
  54964 23 8 7 69.3
  54971 153 53 29 69.6
  54979 18 5 2 11.0
  54980 3 3 0 9.3
  54985 1 1 0 5.7
  54986 94 27 15 28.6

County Totals

 

7,419

2,791

1,164

 

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

 

 

 

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