Fisch Brothers Drilling, Inc.
Recorded as the driller on 6,393 water wells across 10 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Sonoma County. Well-log records span 1975–2026.
Counties served
Wells drilled by Fisch Brothers Drilling, Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Sonoma County | 3,221 |
| Mendocino County | 2,806 |
| Marin County | 264 |
| Napa County | 57 |
| Contra Costa County | 23 |
| Lake County | 15 |
| Sacramento County | 3 |
| Calaveras County | 2 |
| Alameda County | 1 |
| San Joaquin County | 1 |
Well characteristics
Across the wells Fisch Brothers Drilling, Inc. has drilled, the median depth is 220 ft (middle half 160 ft–300 ft), median tested yield 20 gpm, and median static water level 70 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
"Records span 1975–2026" 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.
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