⟁ California Well Data field records · 2026 survey

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Montalvo Well & Pump Co.

Recorded as the driller on 113 water wells across 4 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in San Mateo County. Well-log records span 1977–1990.

113wells on record
—since 2022
4counties served
250 ftmedian depth

Counties served

Wells drilled by Montalvo Well & Pump Co., by county, across the full record.

CountyWells drilled
San Mateo County 56
Santa Clara County 46
Santa Cruz County 9
Alameda County 2

Well characteristics

Across the wells Montalvo Well & Pump Co. has drilled, the median depth is 250 ft (middle half 180 ft–288 ft), median tested yield 25 gpm, and median static water level 80 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

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

"Records span 1977–1990" 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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