| 1 | Neuendorff's Water Well Svc., Inc. | 701 | 1,435 | 2,088 |
| 2 | Texas Southern Drilling | 213 | 213 | 1,116 |
| 3 | Busselman Water Wells, LLC | 115 | 115 | 381 |
| 4 | Vrana Well Service Inc. | 67 | 181 | 875 |
| 5 | Chandler Drilling Inc. | 48 | 116 | 3,378 |
| 6 | J & S Water Wells | 45 | 106 | 2,842 |
| 7 | Skutca Water Well | 44 | 362 | 484 |
| 8 | Cobra Water Well Drilling, Llc. | 38 | 73 | 614 |
| 9 | Cady's Water Wells | 34 | 50 | 1,453 |
| 10 | Kight Water Well Service | 27 | 27 | 356 |
| 11 | Washington Co. Water Well Drilling | 26 | 29 | 2,441 |
| 12 | Maresh Drilling Co., Inc. | 25 | 47 | 1,315 |
| 13 | Bluebonnet Water Wells | 24 | 24 | 230 |
| 14 | Friedel Drilling Company | 20 | 36 | 3,076 |
| 15 | A.w. Flentge Service | 18 | 88 | 645 |
| 16 | Maral Drilling | 18 | 22 | 759 |
| 17 | Ricky Bonds Water Wells | 17 | 28 | 4,108 |
| 18 | Main Stream Environmental | 13 | 13 | 613 |
| 19 | WB Southern Drilling LLC | 13 | 13 | 348 |
| 20 | Leon Flentge Water Well Drilling | 11 | 17 | 161 |
| 21 | Tim Franks Water Well Service | 10 | 10 | 472 |
| 22 | Ballard Water Well Co. LLC | 9 | 11 | 3,374 |
| 23 | Chaffin Water Well Service | 8 | 10 | 1,280 |
| 24 | Geophysical Drilling, Inc. | 7 | 24 | 831 |
| 25 | B&r Water Well Service, LLC | 6 | 14 | 586 |
| 26 | Crowell Drilling Company, Inc. | 4 | 16 | 98 |
| 27 | Aqua Star LLC | 4 | 7 | 1,400 |
| 28 | G.w.davis Water Well Co. LLC | 4 | 6 | 494 |
| 29 | Diggs Drilling Co. Inc. | 3 | 5 | 72 |
| 30 | A C Water Well Service | 3 | 4 | 914 |
| 31 | Scott Drilling Inc. | 3 | 4 | 1,906 |
| 32 | Bell's Drilling Service | 3 | 3 | 864 |
| 33 | Independent Water Well Service | 3 | 3 | 70 |
| 34 | Heflin Water Works | 2 | 11 | 291 |
| 35 | O'day Drilling Company, Inc. | 2 | 5 | 1,687 |
| 36 | Mesecke Water Well | 2 | 5 | 620 |
| 37 | Terra Power Drilling LLC | 2 | 5 | 175 |
| 38 | Dale's Water Wells | 2 | 2 | 1,310 |
| 39 | Landowner Drilled | 2 | 2 | 1,508 |
| 40 | Ltw Services, LP | 2 | 2 | 3,625 |
| 41 | J4 Water Works, LLC | 2 | 2 | 89 |
| 42 | One Stop Septics & Water Wells | 2 | 2 | 86 |
| 43 | Zavala Drilling, Co. | 2 | 2 | 145 |
| 44 | Gmg Water Well Drilling, LLC | 2 | 2 | 68 |
| 45 | 1st Choice Water Wells | 2 | 2 | 698 |
| 46 | Brien Water Wells | 1 | 21 | 1,641 |
| 47 | Weisinger Incorporated | 1 | 9 | 918 |
| 48 | Bussell & Sons LLC | 1 | 9 | 1,244 |
| 49 | B&r Water Well Drilling, LLC | 1 | 2 | 1,142 |
| 50 | Jackson Water Well | 1 | 2 | 396 |
| 51 | Brown's Water Well Drilling, LLC | 1 | 2 | 298 |
| 52 | Delta Drillers | 1 | 1 | 1,019 |
| 53 | Goolsby Water Well Service LLC | 1 | 1 | 1,894 |
| 54 | R&d Water Wells | 1 | 1 | 1,073 |
| 55 | Hurst Water Wells | 1 | 1 | 1,073 |
| 56 | Jimmy's Well Service | 1 | 1 | 726 |
| 57 | Johnstons Water Well Drilling | 1 | 1 | 322 |
| 58 | Harvey's Water Wells | 1 | 1 | 955 |
| 59 | Nickel Water Well Service | 1 | 1 | 169 |
| 60 | 3g Drilling | 1 | 1 | 29 |
| 61 | Burleson Services, Inc. | — | 57 | 935 |
| 62 | Joe Ferguson Water Well Drilling, Inc. | — | 47 | 960 |
| 63 | Austin County Water Well | — | 41 | 151 |
| 64 | Leon Flentge Water Well Drilling And Service | — | 33 | 391 |
| 65 | Joe Ferguson Drilling, Inc. | — | 26 | 247 |
| 66 | Rangnow Water Well Service | — | 21 | 1,294 |
| 67 | Evans Drilling | — | 20 | 202 |
| 68 | Everett Carroll Water Well Service | — | 16 | 428 |
| 69 | Flentge Water Well Drilling And Service | — | 14 | 180 |
| 70 | Fleck Water Well Drilling | — | 12 | 33 |
| 71 | Washington County Water Well Drilling | — | 11 | 1,112 |
| 72 | J & S Water Wells - Primo Trejo | — | 9 | 216 |
| 73 | B & L Water Well Service,Inc. | — | 8 | 1,439 |
| 74 | Deharde Water Well Service | — | 7 | 1,906 |
| 75 | Northwest Water Wells | — | 6 | 1,047 |
| 76 | J & S Water Wells - John Richardson | — | 6 | 78 |
| 77 | Fleck Water Well Drilling And Serv. | — | 6 | 28 |
| 78 | Richter Well Drilling, Inc. | — | 5 | 942 |
| 79 | C & S Utesey Water Well Service & Drilling, LLC | — | 5 | 713 |
| 80 | Lone Star Drilling & Pump Service | — | 5 | 290 |
| 81 | Vrana's Well Service Inc. | — | 5 | 38 |
| 82 | Berry Water Well Service | — | 4 | 102 |
| 83 | W-5 Water Well Service | — | 4 | 43 |
| 84 | Holly Water Wells | — | 3 | 1,130 |
| 85 | Royall's Windmill & Pump | — | 3 | 307 |
| 86 | B&r Waterwell | — | 3 | 121 |
| 87 | J & S Water Wells- Monte Richardson | — | 3 | 58 |
| 88 | Everett Carroll Water Well Service & Drilling Co. | — | 3 | 39 |
| 89 | Thomas Dwayne Bilski | — | 3 | 33 |
| 90 | J & S Drilling, LLC | — | 2 | 552 |
| 91 | Robinson Water Well | — | 2 | 356 |
| 92 | Triple C Drilling | — | 2 | 188 |
| 93 | Ronnie Goolsby Water Well | — | 2 | 2,290 |
| 94 | Weisinger Water Well, Inc. | — | 2 | 823 |
| 95 | Leeper W.w. | — | 2 | 395 |
| 96 | R Michael Chandler | — | 2 | 272 |
| 97 | Washington Cnty Water Well Drilling | — | 2 | 141 |
| 98 | Craig O Bussell | — | 2 | 106 |
| 99 | Wellco Drilling & Service Company | — | 2 | 93 |
| 100 | Ondrey Water Well Service | — | 1 | 1,173 |
| 101 | Felder Water Well & Pump Service, LLC | — | 1 | 1,155 |
| 102 | Hazelett Drilling | — | 1 | 227 |
| 103 | Davison Water Well Service | — | 1 | 843 |
| 104 | Kenco Water Well Service | — | 1 | 894 |
| 105 | Layne Christensen | — | 1 | 103 |
| 106 | J & S Water Wells - Tomas Salinas | — | 1 | 294 |
| 107 | Jackson Waterwell | — | 1 | 262 |
| 108 | Washington County Water Well | — | 1 | 117 |
| 109 | Dirba Water Wells | — | 1 | 108 |
| 110 | Washington Cnty Water Well Dril | — | 1 | 90 |
| 111 | Tomas Salinas | — | 1 | 55 |
| 112 | Spradley Water Well | — | 1 | 54 |