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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

Clark County

54405

35 6 4 21.1
 

54420

11 4 1 10.1
 

54421

24 5 2 17.8
 

54422

7 1 0 4.8
 

54425

6 0 1 105.9
 

54436

14 3 2 10.6
 

54437

33 14 0 9.9
 

54446

8 2 0 5.7
 

54456

48 3 7 43.5
 

54460

13 0 1 11.3
 

54466

72 4 7 69.4
 

54479

23 6 2 10.5
 

54488

13 4 1 20.5
 

54493

3 1 0 4.0
 

54498

22 1 3 25.2
 

54746

6 2 0 6.6
 

54754

16 1 1 22.43
 

54768

68 5 0 7.4
 

54771

14 4 1 11.0

County Totals

 

436

66

33

 

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

 

 

 

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