Best well drillers in Day County, South Dakota
Not a pay-to-play list: these are the 41 drilling companies with wells on record in Day County, ranked by wells actually drilled here — 477 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 Day 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 Day County?
Kranz Well & Excavation has drilled the most Day County wells in the recent record — 17 since 2016, 41 in the county all-time.
How many well drilling companies work in Day County?
41 companies in the SD DANR record have drilled wells in Day 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 Day County?
The median drilled depth in Day County is 125 ft, based on 575 recorded wells. Depths, water levels, and yields are on the Day County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on the Day County wells page.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Day County — never sold elsewhere.
Drill in Day County?
If your company is on this list, your profile is free to claim — confirm your details and add your contact information so Day County property owners reach you directly.
Claim your profileFree to claim · built from SD DANR public well-log records.