⟁ California Well Data field records · 2026 survey

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Pioneer Pump And Well Co.

Recorded as the driller on 195 water wells across 8 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Santa Clara County. Well-log records span 1960–2006.

195wells on record
—since 2022
8counties served
192 ftmedian depth

Counties served

Wells drilled by Pioneer Pump And Well Co., by county, across the full record.

CountyWells drilled
Santa Clara County 117
Monterey County 36
San Benito County 32
Santa Cruz County 5
San Mateo County 2
Stanislaus County 1
San Francisco County 1
Alameda County 1

Well characteristics

Across the wells Pioneer Pump And Well Co. has drilled, the median depth is 192 ft (middle half 100 ft–296 ft), median tested yield 65 gpm, and median static water level 64 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Pioneer Pump And Well Co., straight from the public DWR record:

"Records span 1960–2006" 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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