⟁ California Well Data field records · 2026 survey

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Orsolini Well Drilling

Recorded as the driller on 112 water wells across 3 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Sonoma County. Well-log records span 1966–1980.

112wells on record
—since 2022
3counties served
100 ftmedian depth

Counties served

Wells drilled by Orsolini Well Drilling, by county, across the full record.

CountyWells drilled
Sonoma County 110
San Francisco County 1
El Dorado County 1

Well characteristics

Across the wells Orsolini Well Drilling has drilled, the median depth is 100 ft (middle half 80 ft–145 ft), median tested yield 16 gpm, and median static water level 25 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Orsolini Well Drilling, straight from the public DWR record:

"Records span 1966–1980" 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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