Fredrick Mark Pump & Supply Co.
Recorded as the driller on 297 water wells across 8 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Amador County. Well-log records span 1990–2026.
Counties served
Wells drilled by Fredrick Mark Pump & Supply Co., by county, across the full record.
| County | Wells drilled |
|---|---|
| Amador County | 232 |
| Calaveras County | 29 |
| Placer County | 11 |
| El Dorado County | 9 |
| Nevada County | 7 |
| Alpine County | 5 |
| Napa County | 3 |
| Sacramento County | 1 |
Well characteristics
Across the wells Fredrick Mark Pump & Supply Co. has drilled, the median depth is 340 ft (middle half 260 ft–440 ft), median tested yield 20 gpm, and median static water level 74 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Fredrick Mark Pump & Supply Co., straight from the public DWR record:
"Records span 1990–2026" 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 Amador County, including Fredrick Mark Pump & Supply Co..
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This page is built from the public DWR well-log record and helps property owners find a driller. Claim it (free) to confirm the details are right and give customers a way to reach you.
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