MC Lean & Williams Inc.
Recorded as the driller on 831 water wells across 4 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Napa County. Well-log records span 1961–2026.
Counties served
Wells drilled by MC Lean & Williams Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Napa County | 813 |
| Sonoma County | 11 |
| Solano County | 6 |
| Madera County | 1 |
Well characteristics
Across the wells MC Lean & Williams Inc. has drilled, the median depth is 340 ft (middle half 240 ft–450 ft), median tested yield 30 gpm, and median static water level 60 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by MC Lean & Williams Inc., straight from the public DWR record:
"Records span 1961–2026" 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 Napa County, including MC Lean & Williams Inc..
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