The drilling companies that have actually completed wells within 15 miles of Sand Coulee, ranked by how many, from the well logs each company filed with the state. Sand Coulee is in Cascade County.
In the last five years, 431 wells were completed within 15 miles of Sand Coulee, by 17 different drilling companies. The most active was Aquasource Drilling Llc, with 126. The three busiest companies drilled 59 percent of them, with the rest spread across smaller outfits.
| Company | Wells within 15 mi | Latest | Closest well |
|---|---|---|---|
| Aquasource Drilling Llc | 126 | 2026 | 3 mi |
| Boland Drilling | 74 | 2026 | 0 mi |
| Vista Geoscience | 52 | 2023 | 7 mi |
| Aaaa Water Well Drilling Inc | 47 | 2026 | 4 mi |
| Cascade Drilling Lp | 43 | 2025 | 6 mi |
| Aquasource Inc Llc | 19 | 2023 | 5 mi |
| Pat Byrne Drilling Inc | 16 | 2026 | 2 mi |
| 406 Water Wells, Llc | 15 | 2026 | 5 mi |
| West Central Environmental Consultants | 9 | 2025 | 8 mi |
| Western Water Wells | 7 | 2025 | 5 mi |
| Hl Ventures Llc | 6 | 2025 | 5 mi |
| Okeefe Drilling Co | 3 | 2025 | 9 mi |
| Olympus Technical Services | 3 | 2025 | 11 mi |
| Corveau Drilling | 2 | 2022 | 12 mi |
| Haz Tech Drilling Inc | 2 | 2021 | 9 mi |
| Montana Salinity Control Association | 1 | 2026 | 12 mi |
| Thomas, Dean, And Hoskins, Inc. | 1 | 2025 | 10 mi |
Source: MBMG Ground Water Information Center well logs completed 2021 to 2026, counted by distance from the center of Sand Coulee. 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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