⟁ Illinois Well Data field records · 2026 survey

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Cosby, E. L.

Recorded as the driller on 65 water wells across 4Illinoiscounties in the Illinois State Geological Survey water well records, most in Peoria County. Well-log records span 1967–1972.

65wells on record
—since 2022
4counties served
36 ftmedian depth

Counties served

Wells drilled by Cosby, E. L., by county, across the full record.

CountyWells drilled
Peoria County45
Knox County10
Fulton County8
Marshall County2

Well characteristics

Across the wells Cosby, E. L. has drilled, the median depth is 36 ft (middle half 27 ft–45 ft), median tested yield 6 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 Cosby, E. L., straight from the public ISGS record:

"Records span 1967–1972" 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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