1990 Public system Individual Individual Individual Some other or private well drilled well dug well source company Number Per- Number Per- Number Per- Number Per- Number Per- cent cent cent cent cent US 86068766 84.2% 15131691 14.8% 13467148 13.2% 1664543 1.6% 1063221 1.0% AL 1454160 87.1% 201105 12.0% 170898 10.2% 30207 1.8% 15114 0.9% AK 152550 65.6% 56116 24.1% 52697 22.7% 3419 1.5% 23942 10.3% AZ 1568614 94.5% 77229 4.7% 71562 4.3% 5667 0.3% 13587 0.8% AR 815155 81.5% 174664 17.5% 154969 15.5% 19695 2.0% 10848 1.1% CA 10668942 95.4% 464621 4.2% 432689 3.9% 31932 0.3% 49319 0.4% CO 1344307 91.0% 119898 8.1% 110516 7.5% 9382 0.6% 13144 0.9% CT 1026900 77.7% 289885 21.9% 252669 19.1% 37216 2.8% 4065 0.3% DE 220935 76.2% 68452 23.6% 62267 21.5% 6185 2.1% 532 0.2% DC 278190 99.9% 181 0.1% 151 0.1% 30 0.0% 118 0.0% FL 5298184 86.9% 794558 13.0% 745506 12.2% 49052 0.8% 7520 0.1% GA 2144049 81.3% 476726 18.1% 391011 14.8% 85715 3.2% 17643 0.7% HI 380375 97.6% 868 0.2% 755 0.2% 113 0.0% 8567 2.2% ID 289502 70.0% 112333 27.2% 105860 25.6% 6473 1.6% 11492 2.8% IL 4044971 89.8% 440172 9.8% 366146 8.1% 74026 1.6% 21132 0.5% IN 1664281 74.1% 564286 25.1% 516561 23.0% 47725 2.1% 17479 0.8% IA 927716 81.1% 209984 18.4% 174323 15.2% 35661 3.1% 5969 0.5% KS 934508 89.5% 104107 10.0% 90689 8.7% 13418 1.3% 5497 0.5% KY 1214664 80.6% 206523 13.7% 171220 11.4% 35303 2.3% 85658 5.7% LA 1527872 89.0% 182931 10.7% 156538 9.1% 26393 1.5% 5438 0.3% ME 312299 53.2% 245831 41.9% 190639 32.5% 55192 9.4% 28915 4.9% MD 1565946 82.8% 315155 16.7% 283750 15.0% 31405 1.7% 10816 0.6% MA 2265229 91.6% 200314 8.1% 171182 6.9% 29132 1.2% 7168 0.3% MI 2711224 70.5% 1121066 29.1% 1064011 27.7% 57055 1.5% 15636 0.4% MN 1348611 73.0% 484018 26.2% 442662 23.9% 41356 2.2% 15816 0.9% MS 882496 87.3% 122447 12.1% 106407 10.5% 16040 1.6% 5480 0.5% MO 1839532 83.6% 336598 15.3% 309678 14.1% 26920 1.2% 22999 1.0% MT 236532 65.5% 109273 30.3% 100222 27.8% 9051 2.5% 15350 4.3% NE 548285 83.0% 110754 16.8% 102092 15.5% 8662 1.3% 1582 0.2% NV 479732 92.5% 36815 7.1% 35060 6.8% 1755 0.3% 2311 0.4% NH 303911 60.3% 188825 37.5% 141959 28.2% 46866 9.3% 11168 2.2% NJ 2756133 89.6% 314868 10.2% 288970 9.4% 25898 0.8% 4309 0.1% NM 525244 83.1% 97045 15.4% 90385 14.3% 6660 1.1% 9769 1.5% NY 6329446 87.6% 824332 11.4% 703295 9.7% 121037 1.7% 73113 1.0% NC 1843476 65.4% 913733 32.4% 771663 27.4% 142070 5.0% 60984 2.2% ND 218257 79.0% 52953 19.2% 45932 16.6% 7021 2.5% 5130 1.9% OH 3603499 82.4% 707886 16.2% 644790 14.7% 63096 1.4% 60560 1.4% OK 1223121 87.0% 177074 12.6% 163916 11.7% 13158 0.9% 6304 0.4% OR 963096 80.7% 204470 17.1% 189423 15.9% 15047 1.3% 26001 2.2% PA 3854953 78.1% 978220 19.8% 905420 18.3% 72800 1.5% 104967 2.1% RI 367984 88.8% 45836 11.1% 37434 9.0% 8402 2.0% 752 0.2% SC 1099695 77.2% 318708 22.4% 273941 19.2% 44767 3.1% 5752 0.4% SD 238038 81.4% 48892 16.7% 42806 14.6% 6086 2.1% 5506 1.9% TN 1736138 85.7% 244943 12.1% 215752 10.6% 29191 1.4% 44986 2.2% TX 6417136 91.6% 566716 8.1% 511056 7.3% 55660 0.8% 25147 0.4% UT 573222 95.8% 18522 3.1% 17106 2.9% 1416 0.2% 6644 1.1% VT 137953 50.9% 99781 36.8% 83366 30.7% 16415 6.1% 33480 12.3% VA 1900436 76.1% 539237 21.6% 444953 17.8% 94284 3.8% 56661 2.3% WA 1742224 85.7% 263532 13.0% 231249 11.4% 32283 1.6% 26622 1.3% WV 563191 72.1% 184098 23.6% 166306 21.3% 17792 2.3% 34006 4.4% WI 1367925 66.5% 674510 32.8% 626299 30.5% 48211 2.3% 13339 0.6% WY 157927 77.6% 40600 20.0% 38397 18.9% 2203 1.1% 4884 2.4%