Twin City Testing
Recorded as the driller on 129 water wells across 18 South Dakota counties in the South Dakota DANR well completion report database (NR68), most in Pennington County. Well-log records span 1988–1994.
Counties served
Wells drilled by Twin City Testing, by county, across the full record.
| County | Wells drilled |
|---|---|
| Pennington County | 34 |
| Minnehaha County | 23 |
| Meade County | 19 |
| Jones County | 10 |
| Lawrence County | 10 |
| Todd County | 5 |
| Brown County | 4 |
| Butte County | 4 |
| Codington County | 4 |
| Custer County | 3 |
| Hanson County | 3 |
| Brookings County | 2 |
…and 6 more South Dakota counties.
Well characteristics
Across the wells Twin City Testing has drilled, the median depth is 19 ft (middle half 15 ft–25 ft), median tested yield —, 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 Twin City Testing, straight from the public SD DANR record:
"Records span 1988–1994" refers to the earliest and latest well logs attributed to this company in the SD DANR 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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