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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

Marathon County

54401 3506 987 911 330.0
  54402 20 9 5 28.3
  54403 1138 297 285 317.0
  54405 35 6 4 21.1
  54408 66 15 27 96.6
  54411 117 37 22 78.0
  54412 37 6 16 43.9
  54414 97 32 29 38.7
  54417 11 6 0 8.0
  54421 24 5 2 17.8
  54425 6 0 1 105.9
  54426 173 33 68 141.3
  54427 64 27 11 273.4
  54429 2 1 0 5.7
  54432 4 2 1 12.0
  54440 138 53 44 470.0
  54443 67 21 6 42.4
  54448 319 70 129 285.5
  54449 511 122 56 133.6
  54452 1139 287 163 361.2
  54455 886 274 277 351.3
  54471 120 30 36 84.9
  54473 76 25 16 45.0
  54474 325 90 45 46.6
  54476 1066 388 279 93.1
  54479 23 6 2 10.5
  54480 38 2 0 6.0
  54484 223 30 72 172.6
  54488 13 4 1 20.5
  54499 94 27 37 76

County Totals

 

10,338

2892

2545

 

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

 

 

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