Best well drillers in Oglala Lakota County, South Dakota
Not a pay-to-play list: these are the 8 drilling companies with wells on record in Oglala Lakota County, ranked by wells actually drilled here — 91 logged wells in the South Dakota DANR well completion report database (NR68) (records as of 2026-08-24). Every number links back to the public record.
| # | Company | In Oglala Lakota Co. since 2016 | All-time in county | Statewide |
|---|---|---|---|---|
| 1 | Forster Well Drilling | 33 | 36 | 407 |
| 2 | Geo Enterprises Inc. | 18 | 18 | 48 |
| 3 | Wild Goose Well Drilling | 14 | 19 | 126 |
| 4 | American Engineering Testing,Inc. | 6 | 8 | 687 |
| 5 | Adair Drilling | 3 | 3 | 108 |
| 6 | Rapid Drilling LLC | 2 | 2 | 140 |
| 7 | Tefertiller Drilling | 2 | 2 | 286 |
| 8 | Bice Drilling Co. Inc. | — | 3 | 1,098 |
Ranked by wells drilled in Oglala Lakota County since 2016 (then all-time), from the full SD DANR record. A ★ marks a featured sponsor — sponsors must appear in the county record to be listed, and the ranking below them is never reordered.
Who drills the most wells in Oglala Lakota County?
Forster Well Drilling has drilled the most Oglala Lakota County wells in the recent record — 33 since 2016, 36 in the county all-time.
How many well drilling companies work in Oglala Lakota County?
8 companies in the SD DANR record have drilled wells in Oglala Lakota County; 5 of them have drilled somewhere in South Dakota since 2022. Smaller operators below the record threshold may also serve the area.
How deep is a typical well in Oglala Lakota County?
The median drilled depth in Oglala Lakota County is 90 ft, based on 92 recorded wells. Depths, water levels, and yields are on the Oglala Lakota County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on the Oglala Lakota County wells page.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Oglala Lakota County — never sold elsewhere.
Drill in Oglala Lakota County?
If your company is on this list, your profile is free to claim — confirm your details and add your contact information so Oglala Lakota County property owners reach you directly.
Claim your profileFree to claim · built from SD DANR public well-log records.