| 1 | Ondrey Water Well Service | 425 | 916 | 1,173 |
| 2 | 1st Choice Water Wells | 269 | 413 | 698 |
| 3 | Chaffin Water Well Service | 213 | 514 | 1,280 |
| 4 | G.w.davis Water Well Co. LLC | 208 | 267 | 494 |
| 5 | Almeda Water Well Service | 163 | 545 | 2,617 |
| 6 | Meza Water Well Service | 150 | 151 | 925 |
| 7 | Geophysical Drilling, Inc. | 104 | 435 | 831 |
| 8 | Ricky Bonds Water Wells | 96 | 174 | 4,108 |
| 9 | Scott Drilling Inc. | 82 | 188 | 1,906 |
| 10 | Goolsby Water Well Service LLC | 75 | 89 | 1,894 |
| 11 | Texas Southern Drilling | 75 | 75 | 1,116 |
| 12 | Aqua Star LLC | 69 | 89 | 1,400 |
| 13 | Hatton Water Well Service | 65 | 65 | 100 |
| 14 | O'day Drilling Company, Inc. | 39 | 169 | 1,687 |
| 15 | Maral Drilling | 37 | 42 | 759 |
| 16 | Bluebonnet Water Wells | 36 | 36 | 230 |
| 17 | Mesecke Water Well | 28 | 515 | 620 |
| 18 | Neuendorff's Water Well Svc., Inc. | 27 | 31 | 2,088 |
| 19 | Ballard Water Well Co. LLC | 24 | 37 | 3,374 |
| 20 | Weisinger Incorporated | 24 | 33 | 918 |
| 21 | Gwr Windmills & Water Well Services, LLC | 21 | 21 | 648 |
| 22 | Johnstons Water Well Drilling | 21 | 21 | 322 |
| 23 | Bussell & Sons LLC | 20 | 68 | 1,244 |
| 24 | Alsay Incorporated | 20 | 52 | 440 |
| 25 | Gmg Water Well Drilling, LLC | 20 | 20 | 68 |
| 26 | Mesecke Water Well Enterprises, Inc. | 20 | 20 | 46 |
| 27 | J & S Water Wells | 18 | 37 | 2,842 |
| 28 | Felder Water Well & Pump Service, LLC | 18 | 34 | 1,155 |
| 29 | Tim Franks Water Well Service | 16 | 16 | 472 |
| 30 | Davison Water Well Service | 13 | 36 | 843 |
| 31 | B&r Water Well Drilling, LLC | 13 | 16 | 1,142 |
| 32 | Busselman Water Wells, LLC | 9 | 9 | 381 |
| 33 | Robinson Water Well | 8 | 24 | 356 |
| 34 | Terra Power Drilling LLC | 7 | 28 | 175 |
| 35 | One Stop Septics & Water Wells | 6 | 6 | 86 |
| 36 | Finch Water Well | 5 | 15 | 1,273 |
| 37 | Bell's Drilling Service | 5 | 5 | 864 |
| 38 | Main Stream Environmental | 5 | 5 | 613 |
| 39 | Brazoria Water Well | 5 | 5 | 135 |
| 40 | A&i Water Well Services | 4 | 4 | 226 |
| 41 | Raymond Services, Inc. | 3 | 14 | 734 |
| 42 | Dale's Water Wells | 3 | 3 | 1,310 |
| 43 | J4 Water Works, LLC | 3 | 3 | 89 |
| 44 | Hydro Resources | 3 | 3 | 175 |
| 45 | Cady's Water Wells | 2 | 3 | 1,453 |
| 46 | Brien Water Wells | 2 | 2 | 1,641 |
| 47 | Zavala Drilling, Co. | 2 | 2 | 145 |
| 48 | Gotcher Water Well | 2 | 2 | 108 |
| 49 | Johnston Water Wells | 2 | 2 | 72 |
| 50 | A.w. Flentge Service | 1 | 18 | 645 |
| 51 | Hydro Resources Mid Continent Inc. | 1 | 1 | 3,334 |
| 52 | WB Southern Drilling LLC | 1 | 1 | 348 |
| 53 | Cobra Water Well Drilling, Llc. | 1 | 1 | 614 |
| 54 | M&m Water Well, LLC | 1 | 1 | 632 |
| 55 | Sotex Water Well Service | 1 | 1 | 113 |
| 56 | Mccarty Drilling, LLC | 1 | 1 | 120 |
| 57 | GG Drilling | 1 | 1 | 41 |
| 58 | B&r Water Well Service, LLC | 1 | 1 | 586 |
| 59 | Mahler Water Well Service | — | 380 | 426 |
| 60 | A.c.hughes Water Well | — | 150 | 217 |
| 61 | Ronnie Goolsby Water Well | — | 114 | 2,290 |
| 62 | Guy Steven Mahler | — | 78 | 92 |
| 63 | Northwest Water Wells | — | 77 | 1,047 |
| 64 | Burleson Services, Inc. | — | 76 | 935 |
| 65 | Smerek Water Well Drilling & Service | — | 71 | 85 |
| 66 | Wellco Drilling & Service Company | — | 48 | 93 |
| 67 | Mesecke W/W | — | 40 | 44 |
| 68 | A,C Hughes Water Well Drilling Serv | — | 25 | 30 |
| 69 | John Mike Pyburn | — | 21 | 122 |
| 70 | Weisinger Water Well, Inc. | — | 19 | 823 |
| 71 | Austin County Water Well | — | 17 | 151 |
| 72 | Friedel Drilling Company | — | 15 | 3,076 |
| 73 | Heflin Water Works | — | 14 | 291 |
| 74 | Walker Water Well | — | 14 | 183 |
| 75 | Spradley Water Well | — | 14 | 54 |
| 76 | Chandler Drilling Inc. | — | 13 | 3,378 |
| 77 | B & L Water Well Service,Inc. | — | 11 | 1,439 |
| 78 | Everett Carroll Water Well Service | — | 9 | 428 |
| 79 | A-1 Water Well Drilling Service | — | 7 | 83 |
| 80 | Alameda Water Well Service | — | 7 | 29 |
| 81 | Johnston's Water Wells, LLC | — | 5 | 376 |
| 82 | Wells Water Well Company | — | 5 | 156 |
| 83 | Felder Water Well | — | 5 | 136 |
| 84 | Dirba Water Wells | — | 5 | 108 |
| 85 | Ellis Drilling And Service Co. | — | 5 | 88 |
| 86 | Felder Water Well & Pump Service, LLC | — | 5 | 61 |
| 87 | Joe Ferguson Water Well Drilling, Inc. | — | 4 | 960 |
| 88 | Kenco Water Well Service | — | 4 | 894 |
| 89 | Anchor Water Well | — | 4 | 341 |
| 90 | Craig O Bussell | — | 4 | 106 |
| 91 | Doherty Water Well | — | 4 | 28 |
| 92 | Almeda Warer Well Service | — | 4 | 26 |
| 93 | Holly Water Wells | — | 3 | 1,130 |
| 94 | Joe Ferguson Drilling, Inc. | — | 3 | 247 |
| 95 | J & S Water Wells - Primo Trejo | — | 3 | 216 |
| 96 | Walker Water Solutions | — | 3 | 44 |
| 97 | Robert Quincy Pipes | — | 3 | 42 |
| 98 | Hurst Water Wells | — | 2 | 1,073 |
| 99 | Siegert Water Wells, Inc. | — | 2 | 1,128 |
| 100 | Waller County Water Wells, Inc. | — | 2 | 136 |
| 101 | Berry Water Well Service | — | 2 | 102 |
| 102 | J & S Water Wells- Monte Richardson | — | 2 | 58 |
| 103 | Goolsby W.w. | — | 2 | 36 |
| 104 | Chuck's W.w. | — | 2 | 25 |
| 105 | Landowner Drilled | — | 1 | 1,508 |
| 106 | Davis Water Well, LLC | — | 1 | 77 |
| 107 | Southern Waterwell | — | 1 | 49 |
| 108 | Coastal Waterwell Services Inc. | — | 1 | 1,516 |
| 109 | Layne Christensen | — | 1 | 103 |
| 110 | J & S Water Wells - Tomas Salinas | — | 1 | 294 |
| 111 | Flentge Water Well Drilling And Service | — | 1 | 180 |
| 112 | B&r Waterwell | — | 1 | 121 |
| 113 | Crowell Drilling Company, Inc. | — | 1 | 98 |
| 114 | J & S Water Wells - John Richardson | — | 1 | 78 |
| 115 | Randy's Water Well Drilling | — | 1 | 76 |
| 116 | Everett Carroll Water Well Service & Drilling Co. | — | 1 | 39 |
| 117 | Burns Water Well Service | — | 1 | 28 |