Sandefur, Donald E.
Recorded as the driller on 25 water wells across 8 Illinois counties in the Illinois State Geological Survey water well records, most in Hardin County. Well-log records span 1981–1986.
Counties served
Wells drilled by Sandefur, Donald E., by county, across the full record.
| County | Wells drilled |
|---|---|
| Hardin County | 8 |
| Saline County | 8 |
| Gallatin County | 2 |
| Johnson County | 2 |
| Pope County | 2 |
| Alexander County | 1 |
| Pulaski County | 1 |
| Union County | 1 |
Well characteristics
Across the wells Sandefur, Donald E. has drilled, the median depth is 170 ft (middle half 82 ft–200 ft), median tested yield 9 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 Sandefur, Donald E., straight from the public ISGS record:
"Records span 1981–1986" 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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