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Jefferson County
Indoor Radon Estimates
Percent Homes Above 4 pCi/L
June 1999

Town or City
homes
measured
living area*
basement**
best
estimate
(%)
range #
(%)
best
estimate
(%)
range #
(%)
Adams town 8 8 (3 - 13) 27 (17 - 35)
Alexandria town 3 7 (2 - 13) 27 (15 - 42)
Antwerp town 2 5 (2 - 11) 17 (9 - 30)
Brownville town 9 4 (2 - 8) 19 (12 - 27)
Cape Vincent town 5 2 (1 - 6) 11 (5 - 22)
Champion town 7 5 (2 - 9) 25 (14 - 36)
Clayton town 5 11 (6 - 20) 40 (26 - 54)
Ellisburg town 7 11 (6 - 19) 40 (28 - 53)
Henderson town 2 4 (1 - 9) 16 (5 - 29)
Hounsfield town 2 4 (1 - 9) 18 (7 - 31)
Le Ray town 8 10 (5 - 15) 31 (22 - 41)
Lorraine town 2 8 (3 - 16) 28 (16 - 45)
Lyme town 3 1.5 (0.4 - 4.3) 7 (2 - 16)
Orleans town 0 4 (1 - 10) 18 (7 - 31)
Pamelia town 3 7 (2 - 12) 19 (11 - 30)
Philadelphia town 0 4 (1 - 10) 18 (6 - 33)
Rodman town 2 4 (1 - 10) 16 (7 - 29)
Rutland town 1 7 (2 - 16) 27 (13 - 45)
Theresa town 0 4 (1 - 11) 17 (7 - 35)
Watertown city 47 1.6 (0.9 - 2.5) 9 (6 - 11)
Watertown town 8 3 (1 - 6) 12 (6 - 20)
Wilna town 6 3 (1 - 6) 12 (5 - 22)
Worth town 0 4 (1 - 11) 18 (7 - 36)
           
Jefferson county 130 5   19  

* Long-term measurement, 90 days to one year.

**Short-term measurement, typically 2 to 7 days.

# Uncertainty range of one sigma corresponds to a 68% confidence interval.


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New York State Department of Health - Wadsworth Center

Revised: June 2001