Measured Basement Screening Radon Levels by County - October 2012

County Homes
Tested
Radon Screening Values (pCi/L) Number of Homes
Average GEO Mean GEO SD Maximum <4 pCi/L ≥4 & <20 pCi/L ≥20 pCi/L
ALBANY 2,439 5.23 2.02 3.33 338.5 1,833 499 107
ALLEGANY 514 10.82 4.67 3.83 216.6 230 214 70
BROOME 3,246 5.93 2.88 3.26 210.7 2,020 1,037 189
CATTARAUGUS 1,430 9.35 4.2 3.35 522.1 705 564 161
CAYUGA 1,144 4.79 2.85 2.64 145.6 764 344 36
CHAUTAUQUA 999 6.07 2.73 3.51 141 645 299 55
CHEMUNG 2,006 12.5 7.05 3.24 118.3 594 1,004 408
CHENANGO 656 9.73 4.89 3.32 105.5 277 296 83
CLINTON 209 2.05 1.2 2.84 23.2 186 22 1
COLUMBIA 649 6.84 3.66 3.15 298 320 292 37
CORTLAND 1,574 14.82 8.69 3.19 125.3 364 834 376
DELAWARE 716 8.28 3.97 3.42 180.4 350 302 64
DUTCHESS 3,117 6.86 4.04 2.99 135.2 1,426 1,523 168
ERIE 7,035 5.35 1.67 3.92 391.1 5,436 1,204 395
ESSEX 162 1.62 1.05 2.46 26.3 153 8 1
FRANKLIN 103 1.3 0.91 2.43 6.2 101 2 0
FULTON 146 2.64 1.45 2.82 30.1 125 18 3
GENESEE 697 7.73 3.3 3.03 322.7 444 206 47
GREENE 331 6.97 2.92 3.44 245.2 204 111 16
HAMILTON 21 1.49 1 2.54 5.5 19 2 0
HERKIMER 298 6.08 3.44 2.93 74.1 167 116 15
JEFFERSON 257 4.87 1.89 3.42 336.3 187 64 6
LEWIS 107 4.71 2.39 2.89 107.6 75 29 3
LIVINGSTON 819 8.03 3.57 3.25 157.6 465 287 67
MADISON 1,108 6.16 3.26 2.97 203.6 648 402 58
MONROE 2,457 3.83 1.8 2.8 405.6 2,030 364 63
MONTGOMERY 230 4.13 2.26 3.18 44 155 70 5
NASSAU 740 1.47 1.02 2.38 13.9 700 40 0
NEW YORK 1,364 1.58 0.9 2.83 49.5 1,272 87 5
NIAGARA 1,285 1.81 1.09 2.61 65.4 1,174 107 4
ONEIDA 2,145 5.67 2.9 3.2 107.8 1,334 697 114
ONONDAGA 8,677 8.25 3.64 3.61 348.8 4,576 3,323 778
ONTARIO 620 5.57 3.04 2.91 125 389 202 29
ORANGE 2,304 5.34 2.95 2.92 160.8 1,403 819 82
ORLEANS 513 3.59 1.91 2.77 86.4 407 95 11
OSWEGO 267 2.3 1.43 2.57 29.6 234 30 3
OTSEGO 1,329 8.68 4.5 3.35 299.7 571 633 125
OUT OF STATE 195 3.92 2.22 2.98 52.1 137 55 3
PUTNAM 950 4.8 2.66 2.91 235.2 619 306 25
RENSSELAER 1,963 6.72 3.38 3.39 134.7 1,068 765 130
ROCKLAND 2,527 2.57 1.55 2.61 123.7 2,144 360 23
SARATOGA 1,346 4.19 2.27 2.92 142.2 982 332 32
SCHENECTADY 1,099 4.9 2.08 3.08 186.4 843 213 43
SCHOHARIE 317 6.15 3.12 3.12 94 186 110 21
SCHUYLER 179 6 3.36 2.94 80.4 103 69 7
SENECA 193 2.87 1.83 2.68 19.5 157 36 0
ST.LAWRENCE 326 2.85 1.51 2.79 66.5 282 37 7
STEUBEN 1,444 11.94 6.24 3.41 415.2 480 719 245
SUFFOLK 507 1.81 1.17 2.52 42.6 470 34 3
SULLIVAN 233 3.77 2.05 2.98 46 171 56 6
TIOGA 923 10.49 4.93 3.59 236.8 397 404 122
TOMPKINS 1,457 5.01 2.84 2.9 206.8 907 505 45
ULSTER 1,377 5.12 2.9 2.75 175.7 877 459 41
UNKNOWN 26 4.63 2.15 3.53 34.5 18 7 1
WARREN 267 3.39 1.67 2.85 90.1 225 36 6
WASHINGTON 545 6.32 3.31 3.2 73.6 309 203 33
WAYNE 592 4.61 2.53 2.84 63.6 426 141 25
WESTCHESTER 2,447 2.87 1.73 2.67 95.4 2,022 400 25
WYOMING 520 10.09 4.47 3.68 226.2 247 210 63
YATES 179 5.49 3.23 2.71 69 105 66 8

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