South Dakota Well Data › Custer County
Custer County, South Dakota: well depth, water level & drilling cost
✓ 2,675 SD DANR records · verified 2026-10-19
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How deep are wells in Custer County, South Dakota?
The median drilled well depth in Custer County is 210 ft, based on 2,673 wells with recorded depths in the state SD DANR database. Half of all wells fall between 125 ft and 350 ft; 90% are shallower than 500 ft. Wells drilled since 2016 have a median depth of 280 ft.
How much does it cost to drill a well in Custer County?
Applying published per-foot rates to the local median depth of 280 ft: drilling and casing alone typically runs $7,000–$18,200; a complete system including pump, pressure tank, and hookup typically runs $16,800–$28,000. Actual quotes depend on site access, geology, and casing requirements.
Drilled depth distribution
Who drills wells in Custer County?
Companies by number of wells completed in this county, per the completion reports South Dakota drillers file with DANR.
| Driller | Wells since 2016 |
|---|---|
| ALEXANDER DRILLING, INC. | 209 |
| J & M DRILLING | 108 |
| HOWE WELL DRILLING & EXCAVATING, INC. | 84 |
| TAYLOR DRILLING COMPANY | 20 |
| DENNIS V. JOHNSON DBA DBJ DRILLING LLC | 14 |
| DAKOTA BICE DRILLING, LLC. | 13 |
| AUTHENTIC DRILLING LLC | 6 |
| VENEKAMP DRILLING | 5 |
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Well records by ZIP code in Custer County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Pringle (57773) — 1,141 wells, median 199 ft
- Hermosa (57744) — 460 wells, median 340 ft
- Custer (57730) — 233 wells, median 165 ft
- Fairburn (57738) — 112 wells, median 240 ft
- Buffalo Gap (57722) — 67 wells, median 120 ft
Method: medians computed from SD DANR records (SD DANR NR68 well completion reports, water wells only (monitoring, test-hole, geothermal-loop and dewatering records excluded); depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.