1980 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 72528131 83.6% 13101922 15.1% 11227722 12.9% 1874200 2.2% 1128664 1.3% AL 1158608 79.9% 267202 18.4% 204219 14.1% 62983 4.3% 24945 1.7% AK 107768 70.0% 32391 21.0% 30171 19.6% 2220 1.4% 13892 9.0% AZ 1020731 95.2% 43226 4.0% 40427 3.8% 2799 0.3% 7830 0.7% AR 659725 74.2% 213672 24.0% 182740 20.6% 30932 3.5% 15796 1.8% CA 8819702 95.6% 359584 3.9% 334836 3.6% 24748 0.3% 43834 0.5% CO 1074680 91.9% 84459 7.2% 76836 6.6% 7623 0.7% 10435 0.9% CT 899330 78.6% 241130 21.1% 203602 17.8% 37528 3.3% 4060 0.4% DE 176869 76.8% 52701 22.9% 45450 19.7% 7251 3.1% 731 0.3% DC 276646 99.9% 76 0.0% 62 0.0% 14 0.0% 135 0.0% FL 3698274 86.4% 573059 13.4% 542716 12.7% 30343 0.7% 7301 0.2% GA 1585084 78.7% 405078 20.1% 302876 15.0% 102202 5.1% 23677 1.2% HI 327197 98.5% 536 0.2% 443 0.1% 93 0.0% 4472 1.3% ID 261496 72.6% 88853 24.7% 83013 23.1% 5840 1.6% 9682 2.7% IL 3835388 89.1% 443681 10.3% 346903 8.1% 96778 2.2% 25356 0.6% IN 1495026 72.4% 546381 26.5% 494918 24.0% 51463 2.5% 23708 1.1% IA 877037 78.2% 236709 21.1% 181883 16.2% 54826 4.9% 7568 0.7% KS 825134 86.8% 116567 12.3% 97143 10.2% 19424 2.0% 8810 0.9% KY 1003974 74.1% 247506 18.3% 188758 13.9% 58748 4.3% 103954 7.7% LA 1328035 86.4% 200446 13.0% 165258 10.8% 35188 2.3% 8702 0.6% ME 261322 61.0% 149331 34.9% 105262 24.6% 44069 10.3% 17592 4.1% MD 1283600 82.8% 252142 16.3% 211361 13.6% 40781 2.6% 13938 0.9% MA 2003575 93.6% 132119 6.2% 104153 4.9% 27966 1.3% 5670 0.3% MI 2503336 72.5% 934184 27.1% 880736 25.5% 53448 1.5% 13176 0.4% MN 1137212 74.3% 382572 25.0% 339464 22.2% 43108 2.8% 10509 0.7% MS 738555 81.7% 150816 16.7% 123622 13.7% 27194 3.0% 15152 1.7% MO 1620506 82.6% 305853 15.6% 264551 13.5% 41302 2.1% 36217 1.8% MT 223211 70.8% 80817 25.6% 72119 22.9% 8698 2.8% 11070 3.5% NE 504320 81.5% 112740 18.2% 103037 16.7% 9703 1.6% 1773 0.3% NV 312151 92.4% 24142 7.2% 23074 6.8% 1068 0.3% 1356 0.4% NH 230811 66.1% 110712 31.7% 72774 20.8% 37938 10.9% 7649 2.2% NJ 2408624 89.5% 277326 10.3% 248691 9.2% 28635 1.1% 4427 0.2% NM 415179 84.1% 70157 14.2% 63659 12.9% 6498 1.3% 8153 1.7% NY 5990705 89.3% 659973 9.8% 554603 8.3% 105370 1.6% 55521 0.8% NC 1324436 59.5% 821995 37.0% 645594 29.0% 176401 7.9% 77765 3.5% ND 192558 76.2% 54008 21.4% 44945 17.8% 9063 3.6% 6183 2.4% OH 3317852 81.4% 692062 17.0% 616358 15.1% 75704 1.9% 68150 1.7% OK 1056894 86.0% 164506 13.4% 149362 12.1% 15144 1.2% 8122 0.7% OR 867896 81.0% 178407 16.6% 163299 15.2% 15108 1.4% 25310 2.4% PA 3613011 80.1% 800292 17.7% 725001 16.1% 75291 1.7% 99371 2.2% RI 328261 90.5% 33987 9.4% 25711 7.1% 8276 2.3% 670 0.2% SC 812731 72.4% 297435 26.5% 241291 21.5% 56144 5.0% 12761 1.1% SD 204810 76.0% 56512 21.0% 46813 17.4% 9699 3.6% 8322 3.1% TN 1416564 81.5% 258997 14.9% 219180 12.6% 39817 2.3% 61562 3.5% TX 4961560 90.5% 490453 8.9% 419075 7.6% 71378 1.3% 33260 0.6% UT 463342 96.3% 14511 3.0% 13007 2.7% 1504 0.3% 3213 0.7% VT 113673 57.9% 58380 29.7% 41744 21.2% 16636 8.5% 24406 12.4% VA 1469796 73.5% 455556 22.8% 353757 17.7% 101799 5.1% 74723 3.7% WA 1431226 86.7% 195132 11.8% 162647 9.8% 32485 2.0% 25322 1.5% WV 517778 70.3% 181069 24.6% 156119 21.2% 24950 3.4% 38186 5.2% WI 1223745 69.7% 521579 29.7% 485183 27.6% 36396 2.1% 10987 0.6% WY 148187 81.3% 30900 16.9% 29276 16.1% 1624 0.9% 3260 1.8%