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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

Iowa County

53503 18 6 1 4.6 34.7
  53506 25 3 0 2.2 8.2
  53507 53 23 5 6.2 40.7
  53516 36 12 6 6.5 32.2
  53517 23 9 0 3.6 9.0
  53526 26 11 2 4.6 13.6
  53530 170 63 20 5.8 42.7
  53533 261 104 52 6.7 57.7
  53535 1 1 0 6.8 6.8
  53543 44 17 4 4.3 17.0
  53544 28 9 3 5.9 35.1
  53553 3 1 0 3.4 8.2
  53554 21 7 2 4.1 13.6
  53556 59 0 0 1.4 3.3
  53560 37 6 0 2.4 6.3
  53565 125 41 23 6.6 30.4
  53569 43 14 5 4.8 34.6
  53572 87 25 18 5.6 20.5
  53573 111 12 1 2.1 14.8
  53580 6 3 0 4.2 6.1
  53582 22 6 7 8.2 41.9
  53583 46 13 4 4.1 17.0
  53588 64 10 8 5.8 44.2
  53595 1 0 0 2.6 2.6
  53818 375 144 45 5.3 89.1

County Totals

 

1685

541

206

 

89.1

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

 

 

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