Best well drillers in Yankton County, South Dakota
Not a pay-to-play list: these are the 31 drilling companies with wells on record in Yankton County, ranked by wells actually drilled here — 721 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.
Ranked by wells drilled in Yankton 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 Yankton County?
Quality Well Service LLC has drilled the most Yankton County wells in the recent record — 38 since 2016, 57 in the county all-time.
How many well drilling companies work in Yankton County?
31 companies in the SD DANR record have drilled wells in Yankton County; 15 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 Yankton County?
The median drilled depth in Yankton County is 123 ft, based on 809 recorded wells. Depths, water levels, and yields are on the Yankton County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on the Yankton County wells page.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Yankton County — never sold elsewhere.
Drill in Yankton County?
If your company is on this list, your profile is free to claim — confirm your details and add your contact information so Yankton County property owners reach you directly.
Claim your profileFree to claim · built from SD DANR public well-log records.