⟁ Illinois Well Data field records · 2026 survey

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Schlesser F & Sons

Recorded as the driller on 25 water wells across 3Illinoiscounties in the Illinois State Geological Survey water well records, most in Dupage County. Well-log records span 1948–1948.

25wells on record
—since 2022
3counties served
35 ftmedian depth

Counties served

Wells drilled by Schlesser F & Sons, by county, across the full record.

CountyWells drilled
Dupage County15
Lake County7
Cook County3

Well characteristics

Across the wells Schlesser F & Sons has drilled, the median depth is 35 ft (middle half 31 ft–40 ft), median tested yield 10 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 Schlesser F & Sons, straight from the public ISGS record:

"Records span 1948–1948" 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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