Who is actually doing the work in Custer County, drawn from state well logs and county rosters, and how to get quotes.
Depth is the median of 156 water wells completed in Custer County in the last five years. Half fell between 100 and 560 feet. Your parcel can sit well outside that range; nearby wells tell you more than any county figure.
Ranked by wells completed in the county over the last five years, from the well logs each company filed with the state. Recent work matters more than a long history.
| Company | Last 5 yrs | Last 10 yrs | Latest | Median depth |
|---|---|---|---|---|
| Askin Drilling | 123 | 286 | 2026 | 260 ft |
| Higgins Drilling Company | 40 | 88 | 2025 | 180 ft |
| Olympus Technical Services | 21 | 27 | 2026 | 22 ft |
| Haz Tech Drilling Inc | 14 | 40 | 2025 | 20 ft |
| West Central Environmental Consultants | 4 | 24 | 2024 | 19 ft |
| Sharp Drilling Inc | 2 | 9 | 2023 | 240 ft |
| Ww Drilling | 2 | 5 | 2025 | 311 ft |
| Pirtz Waterworx Llc | 2 | 2 | 2023 | 402 ft |
| Sk Geotechnical Co | 1 | 1 | 2025 | 20 ft |
| 406 Water Wells, Llc | 1 | 1 | 2026 | 60 ft |
See all 14 drilling companies in Custer County →
Source: MBMG Ground Water Information Center well logs. Counts include only logs that name a company. Companies that have not filed a log here in ten years are left off.
Working near a stream? 310 permits in Custer County →
Septic permits in Montana are issued locally. Before anything else, call the Custer County sanitarian or environmental health office and ask for a site evaluation; on raw land it belongs before you close. Our septic guide explains what they will look for.
Tell us what you need. We'll send your request to up to three contractors who work in Custer County, and they contact you directly. Free for landowners.
Request quotes