Arthur & Orum Well Drilling Inc.
Recorded as the driller on 3,219 water wells across 16 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Fresno County. Well-log records span 1969–2025.
Counties served
Wells drilled by Arthur & Orum Well Drilling Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Fresno County | 1,792 |
| Tulare County | 491 |
| Madera County | 482 |
| Merced County | 173 |
| Kings County | 155 |
| Kern County | 33 |
| Stanislaus County | 27 |
| San Bernardino County | 22 |
| Monterey County | 14 |
| Mariposa County | 7 |
| San Luis Obispo County | 4 |
| Los Angeles County | 3 |
…and 4 more California counties.
Well characteristics
Across the wells Arthur & Orum Well Drilling Inc. has drilled, the median depth is 373 ft (middle half 225 ft–535 ft), median tested yield 100 gpm, and median static water level 90 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
"Records span 1969–2025" refers to the earliest and latest well logs attributed to this company in the DWR 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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