The drilling companies that have actually completed wells within 15 miles of Great Falls, ranked by how many, from the well logs each company filed with the state. Great Falls is in Cascade County.
In the last five years, 424 wells were completed within 15 miles of Great Falls, by 17 different drilling companies. The most active was Aquasource Drilling Llc, with 128. The three busiest companies drilled 56 percent of them, with the rest spread across smaller outfits.
| Company | Wells within 15 mi | Latest | Closest well |
|---|---|---|---|
| Aquasource Drilling Llc | 128 | 2026 | 1 mi |
| Boland Drilling | 56 | 2026 | 1 mi |
| Vista Geoscience | 52 | 2023 | 5 mi |
| Aaaa Water Well Drilling Inc | 47 | 2026 | 4 mi |
| Cascade Drilling Lp | 43 | 2025 | 2 mi |
| 406 Water Wells, Llc | 18 | 2026 | 2 mi |
| Aquasource Inc Llc | 17 | 2023 | 4 mi |
| Montana Salinity Control Association | 15 | 2026 | 3 mi |
| Pat Byrne Drilling Inc | 13 | 2026 | 4 mi |
| West Central Environmental Consultants | 9 | 2025 | 4 mi |
| Hl Ventures Llc | 5 | 2025 | 4 mi |
| Western Water Wells | 4 | 2025 | 7 mi |
| Okeefe Drilling Co | 3 | 2025 | 3 mi |
| Olympus Technical Services | 3 | 2025 | 2 mi |
| Corveau Drilling | 2 | 2022 | 8 mi |
| Haz Tech Drilling Inc | 2 | 2021 | 4 mi |
| Thomas, Dean, And Hoskins, Inc. | 1 | 2025 | 1 mi |
Source: MBMG Ground Water Information Center well logs completed 2021 to 2026, counted by distance from the center of Great Falls. Only logs that name a company are ranked. This is a count of public records, not a recommendation; see how to check a driller before you hire. For depth, yield and water level near a specific property, see Montana Water Report.
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