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Westchester County (North and South)
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 # (%) |
||
| Bedford town | 81 | 3 | (2 - 4) | 16 | (13 - 19) |
| Cortlandt town | 156 | 9 | (7 - 10) | 29 | (26 - 31) |
| Eastchester town | 52 | 3 | (2 - 5) | 17 | (14 - 21) |
| Greenburgh town | 223 | 2.1 | (1.7 - 2.6) | 13 | (11 - 14) |
| Harrison town | 59 | 4 | (3 - 5) | 22 | (18 - 25) |
| Lewisboro town | 56 | 6 | (4 - 8) | 27 | (22 - 31) |
| Mamaroneck town | 92 | 6 | (4 - 7) | 27 | (23 - 30) |
| Mount Kisco town | 29 | 3 | (2 - 5) | 18 | (13 - 22) |
| Mount Pleasant town | 136 | 2.3 | (1.8 - 2.9) | 14 | (12 - 16) |
| Mount Vernon city | 35 | 4 | (3 - 6) | 22 | (17 - 28) |
| New Castle town | 127 | 2.5 | (1.9 - 3.2) | 15 | (12 - 17) |
| New Rochelle city | 122 | 2.1 | (1.6 - 2.7) | 13 | (10 - 15) |
| North Castle town | 54 | 6 | (4 - 8) | 27 | (23 - 31) |
| North Salem town | 28 | 6 | (4 - 9) | 26 | (21 - 32) |
| Ossining town | 75 | 3 | (2 - 4) | 15 | (12 - 18) |
| Peekskill city | 22 | 5 | (3 - 7) | 25 | (19 - 31) |
| Pelham town | 21 | 3 | (2 - 5) | 18 | (13 - 23) |
| Pound Ridge town | 23 | 10 | (6 - 14) | 30 | (25 - 36) |
| Rye city | 37 | 3 | (2 - 4) | 17 | (13 - 21) |
| Rye town | 55 | 4 | (3 - 5) | 20 | (16 - 23) |
| Scarsdale town | 93 | 2.3 | (1.6 - 2.9) | 13 | (10 - 16) |
| Somers town | 57 | 5 | (4 - 7) | 27 | (22 - 31) |
| White Plains city | 104 | 1.4 | (0.9 - 2.0) | 10 | (8 - 12) |
| Yonkers city | 136 | 3 | (2 - 4) | 15 | (13 - 17) |
| Yorktown town | 159 | 3.4 | (2.7 - 4.3) | 19 | (16 - 22) |
| Westchester county | 2032 | 4 | 18 | ||
* 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