Kvilhaug Drilling & Pump Inc.
Recorded as the driller on 328 water wells across 20 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Contra Costa County. Well-log records span 1976–2026.
Counties served
Wells drilled by Kvilhaug Drilling & Pump Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Contra Costa County | 156 |
| Santa Clara County | 47 |
| Solano County | 46 |
| Alameda County | 31 |
| Sacramento County | 12 |
| San Mateo County | 9 |
| Yolo County | 7 |
| Amador County | 3 |
| San Benito County | 2 |
| Merced County | 2 |
| Napa County | 2 |
| Sonoma County | 2 |
Show all 20 counties
| Butte County | 2 |
| Stanislaus County | 1 |
| Marin County | 1 |
| Placer County | 1 |
| Sutter County | 1 |
| Colusa County | 1 |
| Yuba County | 1 |
| Mendocino County | 1 |
Well characteristics
Across the wells Kvilhaug Drilling & Pump Inc. has drilled, the median depth is 163 ft (middle half 45 ft–300 ft), median tested yield 20 gpm, and median static water level 36 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Kvilhaug Drilling & Pump Inc., straight from the public DWR record:
"Records span 1976–2026" 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 Contra Costa County, including Kvilhaug Drilling & Pump Inc..
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