All 23 drilling companies that have filed a well log in Ravalli County in the last ten years, 19 of them in the last five, ranked by recent work.
| Company | Last 5 yrs | Last 10 yrs | All time | Latest | First on file |
|---|---|---|---|---|---|
| Eslinger Drilling & Pump Service | 557 | 1103 | 4,238 | 2026 | 1888 |
| Aqwa Drilling Llc | 391 | 765 | 1,791 | 2025 | 1988 |
| Eagle Drilling And Pump Service | 285 | 341 | 729 | 2026 | 1992 |
| Western Montana Drilling Co. | 164 | 188 | 188 | 2026 | 2019 |
| S & S Well Drilling, Llc | 104 | 104 | 104 | 2026 | 2021 |
| Jeromes Drilling Co | 66 | 175 | 991 | 2025 | 1972 |
| Camp Well Drilling And Pump Service | 56 | 92 | 111 | 2025 | 1963 |
| Ravalli Drilling Inc | 43 | 167 | 4,481 | 2024 | 1916 |
| Ak Drilling Inc | 39 | 74 | 96 | 2026 | 2003 |
| Camp Well Drilling & Pump Supply | 5 | 49 | 503 | 2026 | 1962 |
| Jkj Drilling Llc | 5 | 5 | 5 | 2026 | 2025 |
| West Central Environmental Consultants | 4 | 4 | 4 | 2025 | 2025 |
| Coldwater Drilling And Pumps | 3 | 23 | 23 | 2024 | 2018 |
| Okeefe Drilling Co | 3 | 11 | 67 | 2023 | 1972 |
| Heimark Drilling | 2 | 2 | 2 | 2026 | 2026 |
| Aqua Drilling And Pump | 1 | 3 | 10 | 2021 | 2007 |
| Holt Services Inc | 1 | 1 | 1 | 2022 | 2022 |
| Ace Drilling | 1 | 1 | 1 | 2024 | 2024 |
| Rainbow Well Drilling | 1 | 1 | 23 | 2022 | 1973 |
| Western Drilling Co. | 0 | 11 | 11 | 2019 | 2019 |
| Western Water Wells | 0 | 2 | 2 | 2020 | 2020 |
| A-10 Drilling | 0 | 1 | 1 | 2020 | 2020 |
| Callison Well Drilling | 0 | 1 | 11 | 2018 | 1994 |
Source: MBMG Ground Water Information Center well logs. A count of public records, not a recommendation. How to check a driller. Depth and yield for Ravalli County: Montana Water Report.
Victor Stevensville Carlton Pinesdale Hamilton Charlos Heights Darby Conner Sula
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