The drilling companies that have actually completed wells within 15 miles of Boulder, ranked by how many, from the well logs each company filed with the state. Boulder is in Jefferson County.
In the last five years, 117 wells were completed within 15 miles of Boulder, by 7 different drilling companies. The most active was H & L Drilling Inc, with 38. The three busiest companies drilled 70 percent of them, so work here is concentrated among a few outfits.
| Company | Wells within 15 mi | Latest | Closest well |
|---|---|---|---|
| H & L Drilling Inc | 38 | 2026 | 1 mi |
| A-10 Drilling | 29 | 2026 | 3 mi |
| Lindsay Drilling Co Inc | 15 | 2025 | 1 mi |
| Western Water Wells | 14 | 2026 | 4 mi |
| Okeefe Drilling Co | 12 | 2025 | 0 mi |
| Aaaa Water Well Drilling Inc | 5 | 2024 | 5 mi |
| Ak Drilling Inc | 4 | 2025 | 7 mi |
Source: MBMG Ground Water Information Center well logs completed 2021 to 2026, counted by distance from the center of Boulder. 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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