Skip to main content
. Author manuscript; available in PMC: 2022 Feb 14.
Published in final edited form as: Environ Sci Technol. 2017 Oct 18;51(21):12443–12454. doi: 10.1021/acs.est.7b02881

Table 3.

Estimates of Populations Using Domestic Wells with Arsenic >10 μg/L, and Lower and Upper Confidence Limits, by state for the conterminous U.S.

population likely to have arsenic concentration >10 μg/L in domestic well water
95% confidence limit
state domestic well population % estimated population lower upper rank by population, descending
AL 539 394 0.5 2592 1750 3960 43
AR 144 434 0.8 1147 803 1696 48
AZ 218 170 7.8 16 979 13 637 20 902 30
CA 2 476 047 4.7 115 823 91 768 145 900 5
CO 311 619 4.6 14 339 11 705 17 607 31
CT 871 373 6.0 52 105 36 138 74 452 16
DE 185 267 5.4 9925 6643 14 737 34
FL 1 907 603 2.7 50 924 33 060 78 014 17
GA 1 530 125 2.3 34 969 23 251 53 637 22
IA 591 403 6.0 35 650 28 006 44 865 21
ID 431 945 11 47 041 38 491 57 021 18
IL 1 155 342 5.9 67 709 53 347 85 636 11
IN 1 658 685 9.1 150 858 115 385 195 482 3
KS 150 883 4.1 6168 5059 7511 39
KY 663 634 1.0 6707 4680 9744 36
LA 587 505 1.1 6464 4331 9681 37
MA 533 820 5.7 30 549 22 067 41 883 24
MD 1 069 848 3.9 41 276 27 202 63 107 19
ME 560 801 18 102 452 80 281 128 879 6
MI 2 675 773 7.2 192 747 151 408 246 037 1
MN 1 127 975 7.1 80 353 64 209 100 266 9
MO 883 261 1.2 10 242 7587 14 058 33
MS 446 129 0.6 2804 1959 4047 42
MT 285 143 8.2 23 269 18 006 30 042 27
NC 3 303 760 3.6 119 633 76 523 187 279 4
ND 49 355 4.1 2014 1591 2659 45
NE 345 966 5.0 17 399 13 593 22 252 29
NH 445 540 14 60 962 45 643 80 275 13
NJ 964 107 4.2 40 563 26 951 60 496 20
NM 303 139 10 30 990 24 485 38 647 23
NV 157 998 14 21 533 17 769 25 641 28
NY 2 046 039 3.2 66 265 47 992 92 295 12
OH 1 830 099 10 189 191 118 913 294 655 2
OK 315 670 1.4 4337 3392 5622 41
OR 606 611 4.3 26 051 20 233 33 612 26
PA 3 345 559 2.4 80 729 52 104 126 925 8
RI 112 941 1.3 1509 1145 1998 46
SC 1 152 116 2.4 28 131 18 768 42 146 25
SD 75 585 1.6 1182 900 1663 47
TN 538 259 1.0 5245 3448 8102 40
TX 2 440 586 3.9 95 455 74 590 122 294 7
UT 50 514 4.2 2131 1583 2816 44
VA 1 649 470 3.2 52 800 34 585 81 003 14
VT 181 611 5.3 9716 6988 13 363 35
WA 1 002 899 5.2 52 249 40 173 67 401 15
WI 1 644 873 4.4 72 670 58 722 90 438 10
WV 393 332 2.9 11 589 6309 20 661 32
WY 114 123 5.4 6215 5001 7761 38
Total 44 076 331 2 101 648 1 542 173 2 879 171