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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

Sauk County

53556 115 8 1 15.4
  53561 23 11 0 7.7
  53577 20 8 2 11.0
  53578 120 25 6 16.7
  53583 67 19 4 17.0
  53588 91 14 10 44.2
  53913 533 106 43 510.0
  53924 105 30 17 42.0
  53937 32 9 2 26.1
  53940 9 0 0 3.4
  53941 54 9 6 37.4
  53943 24 2 4 33.9
  53944 40 2 0 5.8
  53951 34 9 5 17.0
  53959 296 45 23 61.8
  53961 14 7 1 11.1
  53965 225 20 4 51.3
  53968 168 8 8 132.2

County Totals

 

1,970

332

136

 

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

 

 

 

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