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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

Portage County

54406 68 25 21 31.4
  54407 74 36 9 24.0
  54423 108 33 39 47.0
  54443 67 21 6 42.4
  54454 31 4 9 117.0
  54455 886 274 277 351.3
  54458 3 1 1 12.5
  54467 235 96 10 21.6
  54473 76 25 16 45.0
  54475 69 15 12 58.9
  54481 1436 507 123 120.0
  54482 4 2 0 5.0
  54494 584 128 37 176.9
  54909 32 11 4 14.0
  54921 14 5 0 9.1
  54945 103 26 37 240.7
  54966 19 1 0 5.6
  54977 42 13 10 26.7
  54981 508 195 126 96.5

County Totals

 

4,359

1,418

737

 

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

 

 

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