| 1 | Southwind Drilling Company | 391 | 686 | 4,282 |
| 2 | Robert E Burrows Well Drilling | 380 | 613 | 1,615 |
| 3 | Carroll's Well Drilling | 173 | 397 | 2,028 |
| 4 | Jamison Well Drilling Inc. | 151 | 236 | 11,219 |
| 5 | Davidson Well Drilling | 84 | 223 | 3,177 |
| 6 | A & G Well Drilling Inc. | 69 | 885 | 1,010 |
| 7 | Dillan Well Drilling Inc. | 64 | 77 | 2,861 |
| 8 | Denny Herr Well Drilling | 63 | 362 | 654 |
| 9 | Central Soft Water | 62 | 62 | 1,489 |
| 10 | Don Burrows Well Drilling | 49 | 254 | 514 |
| 11 | Anderson Drilling & Pump Inc. | 31 | 1,114 | 2,933 |
| 12 | Keen Well And Pump | 26 | 32 | 10,231 |
| 13 | Templeton Well Drilling | 24 | 1,300 | 1,364 |
| 14 | Cooper Water Well Drilling | 18 | 291 | 2,153 |
| 15 | Blazek Well Drilling | 18 | 159 | 1,037 |
| 16 | R H Fowler Well Drilling LLC | 14 | 57 | 844 |
| 17 | Streetsboro Sales & Service | 13 | 1,513 | 2,180 |
| 18 | Valley Well & Pump Service Inc. | 10 | 364 | 1,409 |
| 19 | Fredebaugh Well Drilling | 10 | 52 | 5,477 |
| 20 | Max Herr Well & Pump Service LLC | 9 | 492 | 2,176 |
| 21 | Patriot Drilling | 9 | 70 | 470 |
| 22 | Quality Water Systems | 8 | 81 | 2,919 |
| 23 | Donamarc Water Systems Co. | 7 | 159 | 2,417 |
| 24 | A W Smith Well Drilling | 7 | 14 | 1,041 |
| 25 | Jackson Well Services Inc. | 7 | 7 | 93 |
| 26 | Pichan Well Drilling | 6 | 169 | 701 |
| 27 | Adams & Sons Pump Service Inc. | 6 | 6 | 169 |
| 28 | Pugh (L E) | 5 | 274 | 1,908 |
| 29 | Greg Rogers Enterprises | 5 | 7 | 446 |
| 30 | Persing Water Well Drilling | 4 | 8 | 1,373 |
| 31 | J Miller & Sons Drilling | 4 | 4 | 1,124 |
| 32 | Alexander W Smith Water Well Serv | 4 | 4 | 150 |
| 33 | Flinner Drilling Inc. | 3 | 16 | 8,459 |
| 34 | Arch's Well & Pump Service | 3 | 16 | 313 |
| 35 | Robert E Smith Drilling | 2 | 97 | 2,483 |
| 36 | Aces Well Service | 2 | 6 | 35 |
| 37 | Bell Well Drilling Inc. | 2 | 5 | 2,095 |
| 38 | Yoder Drilling & Geothermal | 2 | 2 | 1,353 |
| 39 | Depew Well Drilling | 1 | 10 | 2,080 |
| 40 | Griffith Drilling Co. | 1 | 3 | 854 |
| 41 | Grim Water Systems | 1 | 1 | 71 |
| 42 | Book & Proch Well Drilling Inc. | 1 | 1 | 30 |
| 43 | C E Burrows & Sons | — | 1,060 | 1,701 |
| 44 | Thomas Well Drilling | — | 574 | 1,244 |
| 45 | Westfall Well Drilling | — | 406 | 846 |
| 46 | Freed Water Well Drilling | — | 339 | 1,755 |
| 47 | Hrubik Well Drilling | — | 303 | 433 |
| 48 | Colwell Drilling | — | 285 | 1,014 |
| 49 | Branecky (Joseph) | — | 225 | 275 |
| 50 | Scott (Oakey) Well Drilling | — | 222 | 281 |
| 51 | Scott (R G) | — | 222 | 247 |
| 52 | Pittman (Carl F) | — | 202 | 315 |
| 53 | James Westfall Well Drilling | — | 200 | 389 |
| 54 | Blocksom (P L) | — | 192 | 206 |
| 55 | Hamilton (H S) & Sons | — | 179 | 346 |
| 56 | Givens Well Drilling | — | 170 | 576 |
| 57 | Wolverton (Ken) Well Drilling | — | 160 | 221 |
| 58 | Pugh Well Drilling | — | 145 | 2,961 |
| 59 | A & A Well Drilling | — | 140 | 237 |
| 60 | Mike Herr Well & Pump | — | 136 | 179 |
| 61 | Yantis (H V) | — | 129 | 358 |
| 62 | Carl Lemon Well Drilling | — | 129 | 163 |
| 63 | Hamilton (J D JR) | — | 117 | 159 |
| 64 | Had Inc. | — | 102 | 783 |
| 65 | Suburban Pump Company | — | 93 | 130 |
| 66 | K & S Well Drilling | — | 92 | 161 |
| 67 | Fowler Drilling Inc. | — | 89 | 2,496 |
| 68 | Kisner Drilling Co. | — | 80 | 186 |
| 69 | H & H Drilling (Alliance) | — | 78 | 136 |
| 70 | Peck Well Drilling | — | 74 | 333 |
| 71 | Anderson (Raymond) | — | 66 | 180 |
| 72 | Action Well Drilling | — | 58 | 71 |
| 73 | Fowler (H C) | — | 56 | 823 |
| 74 | Economy Well Drillers | — | 54 | 1,188 |
| 75 | Ayers Well Drilling | — | 51 | 2,270 |
| 76 | Wareham Drilling | — | 50 | 238 |
| 77 | Urbank Well Drilling | — | 46 | 460 |
| 78 | Ohio Drilling Company | — | 41 | 409 |
| 79 | Alchier Well Drilling | — | 41 | 849 |
| 80 | Anders Drilling | — | 41 | 219 |
| 81 | Coventry Well & Pump Service | — | 36 | 519 |
| 82 | Lemon (Chester) & Son | — | 36 | 79 |
| 83 | Fisher's Well Drilling | — | 34 | 92 |
| 84 | Doug Adams Well Drilling | — | 32 | 2,323 |
| 85 | Urbank Brothers | — | 30 | 332 |
| 86 | Mckay & Gould Drilling Inc. | — | 26 | 1,993 |
| 87 | Hamilton (Frank S) | — | 26 | 40 |
| 88 | Culp Drilling Co. | — | 23 | 531 |
| 89 | Burrows (D K) | — | 23 | 34 |
| 90 | Fieldman (Herm) | — | 22 | 353 |
| 91 | Palmer Drilling Inc. | — | 21 | 880 |
| 92 | Ruby (Stan) Well Drilling | — | 21 | 750 |
| 93 | Kisner (J H) | — | 21 | 177 |
| 94 | R G Stockert Drilling Co. | — | 18 | 3,130 |
| 95 | Hicks Well Drilling & Pump Service | — | 18 | 27 |
| 96 | Dean Drilling | — | 17 | 45 |
| 97 | Lininger Drilling & Pumps Inc. | — | 16 | 491 |
| 98 | Quinter Well Drilling LLC | — | 15 | 12,078 |
| 99 | Snyder (L E) | — | 15 | 88 |
| 100 | S & S Well Drilling | — | 14 | 214 |
| 101 | Layne Ohio (Layne Christensen) | — | 13 | 346 |
| 102 | Suburban Drilling Co. | — | 13 | 246 |
| 103 | Buckeye Drilling | — | 13 | 29 |
| 104 | Paul W Wright Drilling | — | 12 | 1,236 |
| 105 | Roth Earth Boring | — | 12 | 231 |
| 106 | Aaa Well Drilling | — | 11 | 62 |
| 107 | Smith (Gerald) Well Drilling | — | 10 | 456 |
| 108 | Murphy (R F) | — | 10 | 410 |
| 109 | Scott Drilling | — | 10 | 135 |
| 110 | Flanagan Drilling | — | 10 | 88 |
| 111 | Kimball Well Drilling | — | 9 | 2,594 |
| 112 | North Eastern Drilling | — | 9 | 568 |
| 113 | Hamilton & Sons Well Drilling | — | 8 | 3,862 |
| 114 | Smith Drilling Co. Inc. | — | 8 | 988 |
| 115 | Ingram (Kendall) | — | 8 | 592 |
| 116 | Baldwin Qualified Well Drilling | — | 8 | 176 |
| 117 | Ohio Rotary Drilling Co. Inc. | — | 8 | 66 |
| 118 | Bjaam Environmental Inc. | — | 7 | 156 |
| 119 | Arthur's Well Drilling | — | 7 | 552 |
| 120 | Walters (M V) | — | 7 | 202 |
| 121 | H L Smith Well Drilling | — | 7 | 180 |
| 122 | Haines (A M) | — | 7 | 48 |
| 123 | Bennett Drilling Co. | — | 6 | 1,074 |
| 124 | Aqua Drilling Inc. | — | 6 | 430 |
| 125 | Scott A Welch Water Well Drilling | — | 6 | 85 |
| 126 | Graham (Parker) | — | 6 | 83 |
| 127 | Readshaw Well Drilling | — | 5 | 422 |
| 128 | Hupp Well & Pump Co. | — | 5 | 317 |
| 129 | Thomas Charles JR & Sons | — | 5 | 56 |
| 130 | G H Bierly Inc. | — | 4 | 4,064 |
| 131 | Jenei Drilling Co. Inc. | — | 4 | 1,390 |
| 132 | Waltz Everett & Co. Inc. | — | 4 | 1,124 |
| 133 | Buckeye Valley Well Drilling | — | 4 | 721 |
| 134 | Geauga Drilling & Supply Co. | — | 4 | 540 |
| 135 | Leyden Management | — | 4 | 525 |
| 136 | Frost Drilling | — | 4 | 386 |
| 137 | Spencer (A C) | — | 4 | 386 |
| 138 | H E Peck Drilling | — | 4 | 376 |
| 139 | Edgar Drilling | — | 4 | 143 |
| 140 | B & B Well Drilling | — | 4 | 134 |
| 141 | Davidson Drilling | — | 4 | 77 |
| 142 | Depew (Russell) Well Drilling | — | 4 | 64 |
| 143 | Hall Drilling | — | 4 | 63 |
| 144 | Wiley Well Drilling Inc. | — | 3 | 6,637 |
| 145 | Jackson & Sons Drilling & Pump Co. | — | 3 | 3,154 |
| 146 | Sprowls Drilling Co. | — | 3 | 1,348 |
| 147 | Crowner Drilling Inc. | — | 3 | 1,190 |
| 148 | Williams (Ronald) Drilling Co. | — | 3 | 540 |
| 149 | Steinman Water Well Drilling | — | 3 | 523 |
| 150 | Frantz Dawson Drilling Co. | — | 3 | 498 |
| 151 | Skolnik (J J) Pump Service | — | 3 | 494 |
| 152 | Hatfield (R A) & Son Inc. | — | 3 | 243 |
| 153 | J M Chuck Well Drilling | — | 3 | 239 |
| 154 | Stein (R H) | — | 3 | 163 |
| 155 | Rowan Drilling Co. | — | 3 | 121 |
| 156 | Sparks Drilling | — | 3 | 113 |
| 157 | Adams (J E) | — | 3 | 109 |
| 158 | Anderson (Sterling) | — | 3 | 102 |
| 159 | Tate Water Well Drilling | — | 3 | 63 |
| 160 | Suburban Pump Shop | — | 3 | 50 |
| 161 | Hudson (F E) | — | 3 | 46 |
| 162 | Miskimins (Homer) | — | 3 | 26 |
| 163 | Walter's Well Drilling | — | 2 | 1,507 |
| 164 | Williams (Nick) Drilling | — | 2 | 320 |
| 165 | Tnt Water Well Inc. | — | 2 | 1,121 |
| 166 | Fearon & Feller Inc. | — | 2 | 1,028 |
| 167 | Waltz (D M) Drilling | — | 2 | 777 |
| 168 | Jones Drilling | — | 2 | 631 |
| 169 | Peck (Carl) Well Drilling | — | 2 | 412 |
| 170 | Marion Harvey & Co. | — | 2 | 376 |
| 171 | Anderson Water Well | — | 2 | 293 |
| 172 | Spencer Drilling Inc. | — | 2 | 261 |
| 173 | Boreman Drilling | — | 2 | 156 |
| 174 | Thomas (Grant) | — | 2 | 153 |
| 175 | Martin (George E) & Son | — | 2 | 148 |
| 176 | Lovely (Hershel) Well Drilling | — | 2 | 117 |
| 177 | Fredebaugh (David) | — | 2 | 110 |
| 178 | Aultfather Charles Drilling | — | 2 | 105 |
| 179 | Culver (Clyde) | — | 2 | 86 |
| 180 | Sprowls Drilling Co. (Groveport) | — | 2 | 84 |
| 181 | Weingart (E H) & Sons | — | 2 | 46 |
| 182 | Steen Brothers Well Drilling | — | 1 | 370 |
| 183 | Civiello Drilling | — | 1 | 1,139 |
| 184 | Stoepfel Drilling LLC | — | 1 | 2,504 |
| 185 | Minnix Water Systems Inc. | — | 1 | 295 |
| 186 | Davis Drilling | — | 1 | 415 |
| 187 | Mullet Drilling Company Inc. | — | 1 | 2,605 |
| 188 | Short Drilling | — | 1 | 1,580 |
| 189 | W Barker & Sons Well Drilling | — | 1 | 1,072 |
| 190 | Brace (J B) | — | 1 | 889 |
| 191 | Wes Britenstine Well Drilling | — | 1 | 786 |
| 192 | Cunningham Well Drilling | — | 1 | 755 |
| 193 | Stoffel Well Drilling | — | 1 | 707 |
| 194 | Eggett Well Drilling | — | 1 | 687 |
| 195 | New Rome Pump Service | — | 1 | 682 |
| 196 | Roberts (Willard) Well Drilling | — | 1 | 635 |
| 197 | Kerr & Maxwell | — | 1 | 605 |
| 198 | Lynch (Theodore) | — | 1 | 599 |
| 199 | Lalonde Well Drilling | — | 1 | 547 |
| 200 | Dorsey (Walter R) | — | 1 | 511 |
| 201 | Quentin Neal Well Drilling | — | 1 | 491 |
| 202 | Snedden (E J) Well Drilling | — | 1 | 456 |
| 203 | Smith & Sons | — | 1 | 448 |
| 204 | Barnes & Sons | — | 1 | 446 |
| 205 | Kerr Corporation | — | 1 | 404 |
| 206 | Bauer Well Drilling | — | 1 | 393 |
| 207 | Danny's Water Well Drilling | — | 1 | 379 |
| 208 | Robert Davis Well Drilling | — | 1 | 377 |
| 209 | Wright Well Drilling | — | 1 | 366 |
| 210 | Rhoades (Paul) | — | 1 | 340 |
| 211 | Kinser Well Drilling | — | 1 | 321 |
| 212 | Mills (Dale N) | — | 1 | 317 |
| 213 | Wright (Larry) Drilling | — | 1 | 293 |
| 214 | B E Wright Drilling | — | 1 | 260 |
| 215 | J & J Builders | — | 1 | 240 |
| 216 | Burkhead Drilling & Excavating | — | 1 | 229 |
| 217 | Johnston (Dean L) | — | 1 | 212 |
| 218 | Boorn Drilling Inc. | — | 1 | 195 |
| 219 | Long (T D) Drilling Co. | — | 1 | 189 |
| 220 | Scott Well Drilling | — | 1 | 187 |
| 221 | Larry Bevard Water Well Drilling | — | 1 | 187 |
| 222 | Gene's Water Service Inc. | — | 1 | 176 |
| 223 | Wade (R Leo) | — | 1 | 175 |
| 224 | Dan Brining Pump Service | — | 1 | 171 |
| 225 | Sherman Well Drilling | — | 1 | 169 |
| 226 | Hickman (Charles W) | — | 1 | 157 |
| 227 | Brogan Well Drilling Co. | — | 1 | 155 |
| 228 | Brown Drilling | — | 1 | 152 |
| 229 | Carroll's Well & Pump Service | — | 1 | 127 |
| 230 | Hensel Drilling | — | 1 | 110 |
| 231 | Hampson Drilling | — | 1 | 96 |
| 232 | Anderson Water Well Drilling | — | 1 | 92 |
| 233 | HD Sonic Drilling Inc. | — | 1 | 86 |
| 234 | Dunbar Drilling Co. | — | 1 | 85 |
| 235 | Eddie's Well Drilling | — | 1 | 76 |
| 236 | Barker Well Drilling | — | 1 | 73 |
| 237 | Mcfarland Drilling Co. | — | 1 | 71 |
| 238 | Porter (M J & M S) | — | 1 | 69 |
| 239 | Steele (Robert) | — | 1 | 67 |
| 240 | William Fait Drilling | — | 1 | 56 |
| 241 | Smith (James H) & Sons | — | 1 | 54 |
| 242 | Hill & Son | — | 1 | 37 |
| 243 | Stoffer Drilling | — | 1 | 34 |
| 244 | Culver (Don) | — | 1 | 34 |
| 245 | Chuck Mock Water Well Drilling | — | 1 | 33 |
| 246 | Ripley (S Glenn) | — | 1 | 32 |
| 247 | Bowser-Morner (Dayton) | — | 1 | 30 |