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Best well drillers in Jefferson County, Montana
Not a pay-to-play list: these are the 72 drilling companies with wells
on record in Jefferson County, ranked by wells actually drilled here — 5,089 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.
72companies on record
26active since 2022
5,089wells in county record
| # | Company | In Jefferson Co. since 2016 | All-time in county | Statewide |
|---|
| 1 | H & L Drilling Inc. | 225 | 1,106 | 7,604 |
| 2 | A-10 Drilling | 204 | 340 | 2,343 |
| 3 | Lindsay Drilling Co. Inc. | 118 | 1,348 | 6,738 |
| 4 | Western Water Wells | 100 | 100 | 1,146 |
| 5 | Okeefe Drilling Co. | 98 | 685 | 8,849 |
| 6 | Red Tiger Drilling | 72 | 141 | 3,139 |
| 7 | Aaaa Water Well Drilling Inc. | 53 | 69 | 769 |
| 8 | AK Drilling Inc. | 44 | 86 | 1,288 |
| 9 | Graham Drilling Inc. | 25 | 110 | 3,141 |
| 10 | Van Dyken Drilling Inc. | 11 | 59 | 5,564 |
| 11 | MT Dept OF Transportation | 9 | 248 | 5,869 |
| 12 | Montana Highway Dept. | 8 | 8 | 370 |
| 13 | Vidic Drilling Inc. | 7 | 7 | 1,062 |
| 14 | Potts Drilling Inc. | 6 | 44 | 3,839 |
| 15 | Dynamite Drilling | 5 | 184 | 631 |
| 16 | Old Town Drilling | 5 | 5 | 163 |
| 17 | Excel Pump And Well Inc. | 4 | 4 | 99 |
| 18 | Parsons Drilling | 2 | 33 | 417 |
| 19 | Bridger Drilling Inc. | 2 | 8 | 2,382 |
| 20 | Boland Drilling | 2 | 4 | 1,807 |
| 21 | Kevin Haggerty Drilling Inc. | 1 | 13 | 1,027 |
| 22 | Beck Drilling & Pump | 1 | 3 | 364 |
| 23 | Eagle Drilling And Pump Service | 1 | 1 | 830 |
| 24 | Diamond M Drilling Inc. | 1 | 1 | 782 |
| 25 | Graham Drilling & Pumps | 1 | 1 | 38 |
| 26 | Treasure State Drilling | — | 185 | 1,444 |
| 27 | Brazill Drilling | — | 43 | 674 |
| 28 | Murrays Well Service | — | 36 | 376 |
| 29 | Barrus Drilling And Pump Co. | — | 29 | 109 |
| 30 | Jbr Environmental Consultants | — | 16 | 72 |
| 31 | Diamond Core Drilling Inc. | — | 15 | 38 |
| 32 | Jerome And Okeefe Drilling Co. | — | 14 | 1,032 |
| 33 | Boart Longyear Company | — | 14 | 96 |
| 34 | Montana Salinity Control Association | — | 10 | 2,583 |
| 35 | Leroy Johnson Well Drilling | — | 9 | 156 |
| 36 | Price & Lindsay | — | 9 | 57 |
| 37 | Hydrometrics Inc. | — | 8 | 194 |
| 38 | Grizzly Drilling | — | 8 | 81 |
| 39 | A.f. Welch Driling | — | 7 | 425 |
| 40 | Atlatl Inc. | — | 7 | 86 |
| 41 | Price Well Drilling | — | 7 | 35 |
| 42 | Mahlum Drilling | — | 6 | 142 |
| 43 | Hillman Drilling | — | 5 | 2,321 |
| 44 | Kornec | — | 5 | 135 |
| 45 | Morelock Drilling And Pump | — | 5 | 36 |
| 46 | Ravalli Drilling Inc. | — | 3 | 4,911 |
| 47 | A-1 Drilling/Billings Drilling | — | 3 | 804 |
| 48 | Jones | — | 3 | 642 |
| 49 | PC Exploration | — | 3 | 47 |
| 50 | Eslinger Drilling & Pump Service | — | 2 | 4,560 |
| 51 | Welch | — | 2 | 457 |
| 52 | Pickett | — | 2 | 347 |
| 53 | Aqua | — | 2 | 189 |
| 54 | Wroble | — | 2 | 101 |
| 55 | Bailey And Okeefe Drilling Co. | — | 2 | 82 |
| 56 | Riddock | — | 2 | 51 |
| 57 | A.f. Welch | — | 2 | 31 |
| 58 | Liberty Drilling & Pump Co. | — | 1 | 2,646 |
| 59 | Martin Well Drilling | — | 1 | 1,451 |
| 60 | Valley Drilling Co. | — | 1 | 1,108 |
| 61 | Poverty Drilling | — | 1 | 992 |
| 62 | Dept OF Transportation | — | 1 | 527 |
| 63 | Briggs Drilling | — | 1 | 381 |
| 64 | Esd Inc. | — | 1 | 284 |
| 65 | Johnson Water Well Service | — | 1 | 275 |
| 66 | Morelock | — | 1 | 130 |
| 67 | Lloyd | — | 1 | 130 |
| 68 | Riddock Casing And Drilling | — | 1 | 91 |
| 69 | Mendenhall Drilling | — | 1 | 70 |
| 70 | Hand | — | 1 | 63 |
| 71 | Ulrich | — | 1 | 35 |
| 72 | Olympus | — | 1 | 34 |
Ranked by wells drilled in Jefferson 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 Jefferson County?
H & L Drilling Inc. has drilled the most Jefferson County wells in the recent record — 225 since 2016, 1,106 in the county all-time.
How many well drilling companies work in Jefferson County?
72 companies in the GWIC record have drilled wells in Jefferson County; 26 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 Jefferson County?
The median drilled depth in Jefferson County is 180 ft, based on 5,299 recorded wells. Depths, water levels, and yields are on the Jefferson County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on
the Jefferson County wells page.
Drill in Jefferson County?
If your company is on this list, your profile is free to claim — confirm your details and add your
contact information so Jefferson County property owners reach you directly.
Claim your profile Free to claim · built from GWIC public well-log records.