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Best well drillers in Stillwater County, Montana
Not a pay-to-play list: these are the 96 drilling companies with wells
on record in Stillwater County, ranked by wells actually drilled here — 4,763 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.
96companies on record
34active since 2022
4,763wells in county record
| # | Company | In Stillwater Co. since 2016 | All-time in county | Statewide |
|---|
| 1 | Aaqua Drilling Inc. | 571 | 1,878 | 5,240 |
| 2 | A-1 Drilling | 99 | 113 | 387 |
| 3 | Okeefe Drilling Co. | 45 | 64 | 8,849 |
| 4 | American Drilling & Supply | 42 | 170 | 3,867 |
| 5 | Douglas Drilling | 34 | 108 | 1,060 |
| 6 | Bertram Drilling Inc. | 23 | 42 | 748 |
| 7 | Haz Tech Drilling Inc. | 12 | 48 | 2,135 |
| 8 | Pro Pump & Equipment Inc. | 6 | 310 | 1,338 |
| 9 | Thompson Drilling & Pump | 6 | 6 | 82 |
| 10 | Water & Environmental Technologies | 6 | 6 | 110 |
| 11 | Potts Drilling Inc. | 4 | 6 | 3,839 |
| 12 | 406 Water Wells, LLC | 4 | 4 | 182 |
| 13 | MT Dept OF Transportation | 3 | 30 | 5,869 |
| 14 | Gary's Drilling Inc. | 3 | 8 | 261 |
| 15 | Pioneer Technical Services Inc. | 3 | 3 | 204 |
| 16 | Birchell Drilling | 2 | 29 | 1,046 |
| 17 | Gary Mayes Drilling Inc. | 2 | 17 | 386 |
| 18 | A-1 Drilling/Billings Drilling | 1 | 198 | 804 |
| 19 | A-10 Drilling | 1 | 8 | 2,343 |
| 20 | SK Geotechnical Co. | 1 | 4 | 434 |
| 21 | Outlaw Drilling & Pump, LLC | 1 | 1 | 45 |
| 22 | Montana Highway Dept. | 1 | 1 | 370 |
| 23 | Boart Longyear Company | 1 | 1 | 96 |
| 24 | B & H | — | 442 | 1,341 |
| 25 | B & H Drilling | — | 295 | 613 |
| 26 | Rock Creek Drilling Inc. | — | 125 | 977 |
| 27 | MT Bureau OF Mines & Geology | — | 84 | 620 |
| 28 | Montana Salinity Control Association | — | 58 | 2,583 |
| 29 | Sabine Productions | — | 50 | 50 |
| 30 | Digger Drilling | — | 49 | 725 |
| 31 | Stillwater | — | 44 | 72 |
| 32 | Dept OF Transportation | — | 34 | 527 |
| 33 | Kal | — | 31 | 115 |
| 34 | Davis Drilling | — | 30 | 385 |
| 35 | Vidic Drilling Inc. | — | 28 | 1,062 |
| 36 | Tcd | — | 27 | 41 |
| 37 | Kal Well Service | — | 21 | 134 |
| 38 | Haugan | — | 20 | 59 |
| 39 | Anderson Drilling | — | 18 | 1,057 |
| 40 | Beven Drilling | — | 18 | 332 |
| 41 | Stillwater Drilling | — | 17 | 26 |
| 42 | Billings | — | 16 | 367 |
| 43 | Y-Environmental | — | 16 | 94 |
| 44 | Terracon | — | 15 | 122 |
| 45 | Mayes Drilling Inc. | — | 13 | 1,139 |
| 46 | H & H Drilling | — | 13 | 1,083 |
| 47 | Billings Drilling | — | 13 | 895 |
| 48 | Maxim Technologies | — | 13 | 491 |
| 49 | Patterson | — | 13 | 41 |
| 50 | Hunt Drilling | — | 12 | 627 |
| 51 | Big Flo Drilling | — | 11 | 45 |
| 52 | Mckeehan | — | 11 | 45 |
| 53 | 50/50 Drilling | — | 9 | 103 |
| 54 | Hansen Environmental Drilling | — | 8 | 1,195 |
| 55 | Gordon Drilling Inc. | — | 8 | 1,128 |
| 56 | Chen-Northern, Inc. | — | 8 | 205 |
| 57 | Hayes Drilling | — | 7 | 1,920 |
| 58 | Sunrise Drilling Inc. | — | 7 | 392 |
| 59 | Sommer | — | 7 | 131 |
| 60 | Mclaughlin | — | 7 | 31 |
| 61 | Adt | — | 7 | 25 |
| 62 | Sharp Drilling Inc. | — | 6 | 772 |
| 63 | Advanced Well Drilling Inc. | — | 6 | 811 |
| 64 | Tetra Tech | — | 6 | 137 |
| 65 | Clayton Larson | — | 6 | 111 |
| 66 | Liberty Drilling & Pump Co. | — | 5 | 2,646 |
| 67 | Hillman Drilling | — | 5 | 2,321 |
| 68 | Pickett | — | 5 | 347 |
| 69 | Pierce | — | 5 | 64 |
| 70 | Debuff Drilling | — | 4 | 443 |
| 71 | A & G Drilling Inc. | — | 4 | 173 |
| 72 | Kornec | — | 4 | 135 |
| 73 | Lloyd | — | 4 | 130 |
| 74 | Sando | — | 4 | 62 |
| 75 | Hunter | — | 4 | 26 |
| 76 | Johnson | — | 3 | 658 |
| 77 | Leroy Johnson Well Drilling | — | 3 | 156 |
| 78 | Pinnow Drilling | — | 3 | 62 |
| 79 | Pinnow | — | 3 | 26 |
| 80 | L & D Drilling | — | 2 | 76 |
| 81 | Hunt - Pearce Drilling | — | 2 | 70 |
| 82 | L & D | — | 2 | 63 |
| 83 | Hand | — | 2 | 63 |
| 84 | Nelson | — | 2 | 53 |
| 85 | Bush | — | 2 | 44 |
| 86 | Graham Drilling Inc. | — | 1 | 3,141 |
| 87 | Van Dyken Drilling Inc. | — | 1 | 5,564 |
| 88 | Aaaa Water Well Drilling Inc. | — | 1 | 769 |
| 89 | Wahl Construction | — | 1 | 245 |
| 90 | Hydrometrics Inc. | — | 1 | 194 |
| 91 | Kelly Drilling | — | 1 | 153 |
| 92 | Martin Well Drilling | — | 1 | 1,451 |
| 93 | Johnson Water Well Service | — | 1 | 275 |
| 94 | I & I Drilling | — | 1 | 118 |
| 95 | Northern Pacific Railway | — | 1 | 63 |
| 96 | Bray | — | 1 | 30 |
Ranked by wells drilled in Stillwater 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 Stillwater County?
Aaqua Drilling Inc. has drilled the most Stillwater County wells in the recent record — 571 since 2016, 1,878 in the county all-time.
How many well drilling companies work in Stillwater County?
96 companies in the GWIC record have drilled wells in Stillwater County; 34 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 Stillwater County?
The median drilled depth in Stillwater County is 60 ft, based on 5,835 recorded wells. Depths, water levels, and yields are on the Stillwater County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on
the Stillwater County wells page.
Drill in Stillwater County?
If your company is on this list, your profile is free to claim — confirm your details and add your
contact information so Stillwater County property owners reach you directly.
Claim your profile Free to claim · built from GWIC public well-log records.