⟁ Illinois Well Data field records · 2026 survey

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Adolphson Well Drlg. Service

Recorded as the driller on 134 water wells across 2Illinoiscounties in the Illinois State Geological Survey water well records, most in Mercer County. Well-log records span 1967–1974.

134wells on record
—since 2022
2counties served
424 ftmedian depth

Counties served

Wells drilled by Adolphson Well Drlg. Service, by county, across the full record.

CountyWells drilled
Mercer County123
Rock Island County11

Well characteristics

Across the wells Adolphson Well Drlg. Service has drilled, the median depth is 424 ft (middle half 279 ft–474 ft), median tested yield 17 gpm, and median static water level — below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Adolphson Well Drlg. Service, straight from the public ISGS record:

"Records span 1967–1974" refers to the earliest and latest well logs attributed to this company in the ISGS 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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