Sebastian & Sons
Recorded as the driller on 1,326 water wells across 20 Michigan counties in Wellogic, the statewide groundwater database maintained by the Michigan Department of Environment, Great Lakes, and Energy (EGLE), most in Jackson County. Well-log records span 1986–2026.
Counties served
Wells drilled by Sebastian & Sons, by county, across the full record.
| County | Wells drilled |
|---|---|
| Jackson County | 467 |
| Calhoun County | 255 |
| Branch County | 205 |
| Eaton County | 133 |
| Hillsdale County | 110 |
| Ingham County | 55 |
| Lenawee County | 20 |
| Barry County | 19 |
| Kalamazoo County | 17 |
| Washtenaw County | 13 |
| St. Joseph County | 12 |
| Clinton County | 5 |
…and 8 more Michigan counties.
Well characteristics
Across the wells Sebastian & Sons has drilled, the median depth is 110 ft (middle half 78 ft–148 ft), median tested yield 37 gpm, and median static water level 23 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
"Records span 1986–2026" refers to the earliest and latest well logs attributed to this company in the EGLE 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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