Guardino Well Drilling Inc.
Recorded as the driller on 1,756 water wells across 18 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Santa Clara County. Well-log records span 1952–2026.
Counties served
Wells drilled by Guardino Well Drilling Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Santa Clara County | 1,268 |
| San Benito County | 166 |
| Los Angeles County | 119 |
| Monterey County | 68 |
| San Mateo County | 54 |
| Alameda County | 17 |
| San Joaquin County | 17 |
| Placer County | 10 |
| Santa Cruz County | 8 |
| Merced County | 8 |
| Contra Costa County | 8 |
| Stanislaus County | 4 |
Show all 18 counties
| Madera County | 3 |
| Kings County | 2 |
| Fresno County | 1 |
| Napa County | 1 |
| Sacramento County | 1 |
| Sutter County | 1 |
Well characteristics
Across the wells Guardino Well Drilling Inc. has drilled, the median depth is 300 ft (middle half 220 ft–400 ft), median tested yield 39 gpm, and median static water level 57 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Guardino Well Drilling 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 Santa Clara County, including Guardino Well Drilling Inc..
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