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Best well drillers in Lewis and Clark County, Montana
Not a pay-to-play list: these are the 135 drilling companies with wells
on record in Lewis and Clark County, ranked by wells actually drilled here — 15,793 logged
wells in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC) (records as of 2026-07-27). Every number links back to
the public record.
135companies on record
43active since 2022
15,793wells in county record
| # | Company | In Lewis and Clark Co. since 2016 | All-time in county | Statewide |
|---|
| 1 | H & L Drilling Inc. | 889 | 4,432 | 7,604 |
| 2 | A-10 Drilling | 699 | 1,252 | 2,343 |
| 3 | Western Water Wells | 459 | 459 | 1,146 |
| 4 | Aaaa Water Well Drilling Inc. | 179 | 316 | 769 |
| 5 | Lindsay Drilling Co. Inc. | 159 | 3,719 | 6,738 |
| 6 | MT Poverty Water Well Drilling | 112 | 268 | 408 |
| 7 | Okeefe Drilling Co. | 81 | 265 | 8,849 |
| 8 | 406 Water Wells, LLC | 54 | 54 | 182 |
| 9 | Aquasource Drilling LLC | 51 | 59 | 1,071 |
| 10 | Cascade Drilling LP | 48 | 67 | 716 |
| 11 | HL Ventures LLC | 38 | 38 | 193 |
| 12 | Yellow Jacket Drilling Services LLC | 37 | 37 | 72 |
| 13 | MT Dept OF Transportation | 27 | 172 | 5,869 |
| 14 | Boland Drilling | 17 | 97 | 1,807 |
| 15 | Aquasource Inc. LLC | 16 | 34 | 497 |
| 16 | AK Drilling Inc. | 6 | 16 | 1,288 |
| 17 | Pioneer Technical Services Inc. | 5 | 6 | 204 |
| 18 | Hydrometrics Inc. | 3 | 72 | 194 |
| 19 | Poverty Drilling | 2 | 279 | 992 |
| 20 | SK Geotechnical Co. | 2 | 10 | 434 |
| 21 | West Central Environmental Consultants | 2 | 2 | 291 |
| 22 | Red Tiger Drilling | 1 | 18 | 3,139 |
| 23 | Jeromes Drilling Co. | 1 | 13 | 6,463 |
| 24 | Western Water Works Inc. | 1 | 1 | 1,205 |
| 25 | Montana Highway Dept. | 1 | 1 | 370 |
| 26 | Treasure State Drilling | — | 1,133 | 1,444 |
| 27 | Welch | — | 451 | 457 |
| 28 | A.f. Welch Driling | — | 413 | 425 |
| 29 | MT-Poverty | — | 272 | 400 |
| 30 | Brazill Drilling | — | 145 | 674 |
| 31 | Jerome And Okeefe Drilling Co. | — | 138 | 1,032 |
| 32 | Leroy Johnson Well Drilling | — | 121 | 156 |
| 33 | Mahlum Drilling | — | 101 | 142 |
| 34 | Dept OF Transportation | — | 94 | 527 |
| 35 | M.t. | — | 84 | 116 |
| 36 | Johnson | — | 75 | 658 |
| 37 | Riddock Casing And Drilling | — | 75 | 91 |
| 38 | Phelps Dodge | — | 63 | 63 |
| 39 | Murrays Well Service | — | 60 | 376 |
| 40 | Maxim Technologies | — | 57 | 491 |
| 41 | Byrne | — | 47 | 1,232 |
| 42 | Environmental West Exploration | — | 44 | 329 |
| 43 | Water & Environmental Technologies | — | 39 | 110 |
| 44 | Riddock | — | 35 | 51 |
| 45 | Price & Lindsay | — | 32 | 57 |
| 46 | Grizzly Drilling | — | 31 | 81 |
| 47 | Anderson Drilling | — | 30 | 1,057 |
| 48 | Bailey And Okeefe Drilling Co. | — | 28 | 82 |
| 49 | A.f. Welch | — | 27 | 31 |
| 50 | Price Well Drilling | — | 25 | 35 |
| 51 | M.t. Drilling | — | 25 | 29 |
| 52 | Nicka Well Drilling | — | 24 | 160 |
| 53 | Tetra Tech | — | 24 | 137 |
| 54 | Chris Boland Drilling Co. | — | 24 | 37 |
| 55 | Haz Tech Drilling Inc. | — | 23 | 2,135 |
| 56 | Johnson Water Well Service | — | 22 | 275 |
| 57 | Martin Well Drilling | — | 16 | 1,451 |
| 58 | Diamond Core Drilling Inc. | — | 16 | 38 |
| 59 | Whitaker Well Drilling | — | 15 | 72 |
| 60 | Hand | — | 14 | 63 |
| 61 | Olympus | — | 14 | 34 |
| 62 | Hillman Drilling | — | 13 | 2,321 |
| 63 | Debuff Drilling | — | 12 | 443 |
| 64 | Chen-Northern, Inc. | — | 12 | 205 |
| 65 | Smith Drilling | — | 12 | 120 |
| 66 | Schmidt | — | 12 | 114 |
| 67 | Franklin | — | 10 | 162 |
| 68 | Environmental West | — | 8 | 143 |
| 69 | Aqua | — | 8 | 189 |
| 70 | P & S Drilling | — | 8 | 49 |
| 71 | Van Dyken Drilling Inc. | — | 7 | 5,564 |
| 72 | Mendenhall Drilling | — | 7 | 70 |
| 73 | Ruen | — | 7 | 57 |
| 74 | Billmayer Drilling | — | 6 | 3,225 |
| 75 | Pat Byrne Drilling Inc. | — | 6 | 440 |
| 76 | A & G Drilling Inc. | — | 6 | 173 |
| 77 | MT Department OF Transportation | — | 6 | 29 |
| 78 | Potts Drilling Inc. | — | 5 | 3,839 |
| 79 | Rainbow Well Drilling | — | 5 | 204 |
| 80 | Briggs Drilling | — | 5 | 381 |
| 81 | Brown | — | 5 | 247 |
| 82 | Rafferty | — | 5 | 193 |
| 83 | Boart Longyear Company | — | 5 | 96 |
| 84 | Bridger Drilling Inc. | — | 4 | 2,382 |
| 85 | Diamond M Drilling Inc. | — | 4 | 782 |
| 86 | Sure Water Drilling | — | 4 | 125 |
| 87 | Aqua Source | — | 4 | 117 |
| 88 | Magstadt | — | 4 | 80 |
| 89 | Nelson | — | 4 | 53 |
| 90 | Central Drilling Inc. | — | 3 | 1,101 |
| 91 | H & H Drilling | — | 3 | 1,083 |
| 92 | Liberty Drilling & Pump Co. | — | 3 | 2,646 |
| 93 | Joe Liss Drilling | — | 3 | 313 |
| 94 | Kornec | — | 3 | 135 |
| 95 | Usgs | — | 3 | 102 |
| 96 | Taylor | — | 3 | 88 |
| 97 | Raging Wolf Drilling | — | 3 | 57 |
| 98 | MT Dept OF Highways | — | 3 | 55 |
| 99 | Jones Welding & Drilling Co. | — | 3 | 50 |
| 100 | Eslinger Drilling & Pump Service | — | 2 | 4,560 |
| 101 | MT Bureau OF Mines & Geology | — | 2 | 620 |
| 102 | Corveau Drilling | — | 2 | 141 |
| 103 | Camp Well Drilling | — | 2 | 3,803 |
| 104 | Pickett | — | 2 | 347 |
| 105 | Clayton Larson | — | 2 | 111 |
| 106 | Barrus Drilling And Pump Co. | — | 2 | 109 |
| 107 | Bush | — | 2 | 44 |
| 108 | Layne-Minnesota | — | 2 | 39 |
| 109 | Bertram Drilling Inc. | — | 1 | 748 |
| 110 | Hayes Drilling | — | 1 | 1,920 |
| 111 | HI-Line Drilling Inc. | — | 1 | 1,575 |
| 112 | Ravalli Drilling Inc. | — | 1 | 4,911 |
| 113 | Kelly Drilling | — | 1 | 153 |
| 114 | Haggerty Drilling | — | 1 | 3,618 |
| 115 | Valley Drilling Co. | — | 1 | 1,108 |
| 116 | Advanced Well Drilling Inc. | — | 1 | 811 |
| 117 | Williams Well Drilling | — | 1 | 785 |
| 118 | Stinger Well Drilling | — | 1 | 774 |
| 119 | Drane Drilling Service | — | 1 | 702 |
| 120 | Jones | — | 1 | 642 |
| 121 | Hickel & Tooke Drilling Co. | — | 1 | 569 |
| 122 | Hulbert | — | 1 | 558 |
| 123 | Blackfoot Well Drilling & Pump Service Inc. | — | 1 | 450 |
| 124 | Parsons Drilling | — | 1 | 417 |
| 125 | Western | — | 1 | 202 |
| 126 | Montana | — | 1 | 176 |
| 127 | Sommer | — | 1 | 131 |
| 128 | Lloyd | — | 1 | 130 |
| 129 | Joe Johnson Drilling | — | 1 | 126 |
| 130 | Porter Drilling | — | 1 | 126 |
| 131 | Carlson | — | 1 | 115 |
| 132 | Wroble | — | 1 | 101 |
| 133 | Porter Well Drilling | — | 1 | 47 |
| 134 | Ray | — | 1 | 42 |
| 135 | Morelock Drilling And Pump | — | 1 | 36 |
Ranked by wells drilled in Lewis and Clark County since 2016 (then all-time), from the full GWIC
record. A ★ marks a featured sponsor — sponsors must appear in the county record to be listed, and
the ranking below them is never reordered.
Who drills the most wells in Lewis and Clark County?
H & L Drilling Inc. has drilled the most Lewis and Clark County wells in the recent record — 889 since 2016, 4,432 in the county all-time.
How many well drilling companies work in Lewis and Clark County?
135 companies in the GWIC record have drilled wells in Lewis and Clark County; 43 of them have drilled somewhere in Montana since 2022. Smaller operators below the record threshold may also serve the area.
How deep is a typical well in Lewis and Clark County?
The median drilled depth in Lewis and Clark County is 105 ft, based on 17,141 recorded wells. Depths, water levels, and yields are on the Lewis and Clark County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on
the Lewis and Clark County wells page.
Drill in Lewis and Clark County?
If your company is on this list, your profile is free to claim — confirm your details and add your
contact information so Lewis and Clark County property owners reach you directly.
Claim your profile Free to claim · built from GWIC public well-log records.