D & D Drilling Inc. Dba Valley Drilling Co.
Recorded as the driller on 1,282 water wells across 9 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in San Joaquin County. Well-log records span 1946–2025.
Counties served
Wells drilled by D & D Drilling Inc. Dba Valley Drilling Co., by county, across the full record.
| County | Wells drilled |
|---|---|
| San Joaquin County | 774 |
| Sacramento County | 438 |
| Yolo County | 36 |
| Solano County | 5 |
| Sutter County | 4 |
| Nevada County | 4 |
| Calaveras County | 2 |
| Stanislaus County | 1 |
| Contra Costa County | 1 |
Well characteristics
Across the wells D & D Drilling Inc. Dba Valley Drilling Co. has drilled, the median depth is 246 ft (middle half 230 ft–290 ft), median tested yield 100 gpm, and median static water level 100 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by D & D Drilling Inc. Dba Valley Drilling Co., straight from the public DWR record:
"Records span 1946–2025" 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 D & D Drilling Inc. Dba Valley Drilling Co..
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