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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 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.

For estimating the fraction of houses with average occupant exposures greater than 4 pCi/L for the radon averaged over a year on the main floor: divide the number in the “>10 pCi/L” column by the number in the “Total No.” (of measurements) column.  For more information on that relationship, click here. 

The data listed for Zip Codes crosses county borders.

Wisconsin Measurement Summary - 2006

Numbers of Measurements versus Radon:

County

Zip
Code

No. of Measurements

Ave.
pCi\L

High
pCi\L

Total
No.

#  4 - 10
pCi\L*

#  >10
pCi\L

Rock County

53114 25 8 10 8.0 19.0
  53190 105 25 12 4.9 43.9
  53500 1 0 1 11.0 11.0
  53501 5 3 2 10.4 18.4
  53502 22 2 2 3.7 14.6
  53505 2 0 0 1.3 1.7
  53511 377 148 51 6.7 180.0
  53512 3 0 0 3.0 3.1
  53520 58 2 2 2.0 12.4
  53521 35 7 3 5.7 45.1
  53525 20 6 2 4.6 11.8
  53534 51 21 10 6.7 39.2
  53536 41 13 2 3.9 22.4
  53537 4 1 0 3.0 5.5
  53538 97 28 3 3.5 27.6
  53545 312 107 33 5.0 66.8
  53546 160 56 27 6.0 42.9
  53547 26 7 5 28.2 220.0
  53548 36 16 2 4.4 17.5
  53563 29 14 1 4.4 11.6
  53576 21 5 7 8.8 39.5
  53585 19 6 2 7.1 59.1
  53589 154 57 7 4.3 41.2

County Totals

 

1602

532

184

 

220.0

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

 

 

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