⟁ Illinois Well Data field records · 2026 survey

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Mallow

Recorded as the driller on 71 water wells across 4Illinoiscounties in the Illinois State Geological Survey water well records, most in Kendall County. Well-log records span 1967–1976.

71wells on record
—since 2022
4counties served
108 ftmedian depth

Counties served

Wells drilled by Mallow, by county, across the full record.

CountyWells drilled
Kendall County31
Kane County30
Grundy County9
Dupage County1

Well characteristics

Across the wells Mallow has drilled, the median depth is 108 ft (middle half 60 ft–173 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 Mallow, straight from the public ISGS record:

"Records span 1967–1976" 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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