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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

Eau Claire County

54493 2 1 0 2.3 4.0

 

54701 858 173 85 6.1 181.0
  54702 75 4 0 1.3 11.9
  54703 553 149 62 5.4 79.4
  54720 121 25 20 5.5 33.3
  54722 22 3 0 1.8 6.4
  54726 29 1 3 3.1 17.2
  54727 55 14 2 3.5 19.0
  54729 448 207 57 5.8 38.8
  54738 19 3 1 2.7 10.3
  54739 55 16 5 11.0 214.9
  54741 6 1 2 5.5 11.4
  54742 46 11 5 4.6 19.5
  54755 43 8 1 3.2 11.5
  54758 34 2 2 2.9 14.7
  54768 68 5 0 1.8 7.4
  54770 6 2 0 2.9 5.3

County Totals

 

2440

625

245

 

214.9

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

 

 

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