T S A Drilling Inc. Dba Penecore Drilling
Recorded as the driller on 582 water wells across 20 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Santa Clara County. Well-log records span 2004–2026.
Counties served
Wells drilled by T S A Drilling Inc. Dba Penecore Drilling, by county, across the full record.
| County | Wells drilled |
|---|---|
| Santa Clara County | 172 |
| Sacramento County | 150 |
| Alameda County | 100 |
| San Joaquin County | 43 |
| Contra Costa County | 26 |
| Yuba County | 16 |
| Butte County | 16 |
| Sonoma County | 12 |
| San Mateo County | 10 |
| El Dorado County | 9 |
| Yolo County | 5 |
| Tulare County | 4 |
Show all 20 counties
| Nevada County | 4 |
| Sutter County | 3 |
| Glenn County | 3 |
| Lassen County | 3 |
| San Francisco County | 2 |
| Santa Cruz County | 1 |
| Mendocino County | 1 |
| Shasta County | 1 |
Well characteristics
Across the wells T S A Drilling Inc. Dba Penecore Drilling has drilled, the median depth is 20 ft (middle half 10 ft–30 ft), median tested yield 50 gpm, and median static water level 19 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by T S A Drilling Inc. Dba Penecore Drilling, straight from the public DWR record:
"Records span 2004–2026" 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 T S A Drilling Inc. Dba Penecore Drilling.
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