⟁ California Well Data field records · 2026 survey

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Ballard & Foote

Recorded as the driller on 870 water wells across 5 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Sonoma County. Well-log records span 1950–1991.

870wells on record
—since 2022
5counties served
60 ftmedian depth

Counties served

Wells drilled by Ballard & Foote, by county, across the full record.

CountyWells drilled
Sonoma County 818
Marin County 41
Mendocino County 4
San Joaquin County 4
Napa County 3

Well characteristics

Across the wells Ballard & Foote has drilled, the median depth is 60 ft (middle half 34 ft–102 ft), median tested yield 4 gpm, and median static water level 22 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Ballard & Foote, straight from the public DWR record:

"Records span 1950–1991" 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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