Hansen Environmental Drilling
Recorded as the driller on 1,195 water wells across 39 Montana counties in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC), most in Valley County. Well-log records span 1938–2026.
Counties served
Wells drilled by Hansen Environmental Drilling, by county, across the full record.
| County | Wells drilled |
|---|---|
| Valley County | 239 |
| Roosevelt County | 147 |
| Custer County | 94 |
| Dawson County | 94 |
| Richland County | 93 |
| Yellowstone County | 78 |
| Phillips County | 64 |
| Rosebud County | 42 |
| Hill County | 41 |
| Sheridan County | 37 |
| Fallon County | 22 |
| Musselshell County | 21 |
…and 27 more Montana counties.
Well characteristics
Across the wells Hansen Environmental Drilling has drilled, the median depth is 25 ft (middle half 19 ft–30 ft), median tested yield 8 gpm, and median static water level 16 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Hansen Environmental Drilling, straight from the public MBMG record:
"Records span 1938–2026" refers to the earliest and latest well logs attributed to this company in the MBMG database — the state digitized older paper logs, so the first date is the oldest record on file, not necessarily the company's founding year.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Valley County — never sold elsewhere.
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