Hennings Bros Drilling Co. Inc.
Recorded as the driller on 6,824 water wells across 14 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in San Joaquin County. Well-log records span 1952–2026.
Counties served
Wells drilled by Hennings Bros Drilling Co. Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| San Joaquin County | 2,846 |
| Stanislaus County | 2,433 |
| Merced County | 1,056 |
| Contra Costa County | 323 |
| Alameda County | 83 |
| Mariposa County | 48 |
| Madera County | 13 |
| Sacramento County | 13 |
| Calaveras County | 3 |
| Fresno County | 2 |
| San Benito County | 1 |
| Tuolumne County | 1 |
Show all 14 counties
| Solano County | 1 |
| Yolo County | 1 |
Well characteristics
Across the wells Hennings Bros Drilling Co. Inc. has drilled, the median depth is 181 ft (middle half 125 ft–250 ft), median tested yield 2,588 gpm, and median static water level 35 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Hennings Bros Drilling Co. Inc., straight from the public DWR record:
"Records span 1952–2026" refers to the earliest and latest well logs attributed to this company in the DWR 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. Goes to licensed drillers working San Joaquin County, including Hennings Bros Drilling Co. Inc..
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