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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

Rock County

53114 40 13 15 20.0
  53190 152 35 28 43.9
  53501 5 3 2 18.4
  53505 14 6 3 18.6
  53511 694 261 88 180.0
  53512 11 1 4 11.7
  53520 93 16 3 13.0
  53521 46 9 7 66.0
  53525 51 11 8 28.2
  53534 154 61 17 39.2
  53536 97 35 5 22.4
  53537 10 3 0 6.8
  53545 645 227 78 66.8
  53546 648 272 136 81.1
  53547 86 37 9 220.0
  53548 181 70 22 25.1
  53563 212 79 27 39.5
  53576 39 7 8 39.45
  53585 27 9 2 59.1

County Totals

 

3,205

1,155

462

 

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

 

 

 

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