Best well drillers in Mercer County, Illinois
Not a pay-to-play list: these are the 60 drilling companies with wells on record in Mercer County, ranked by wells actually drilled here — 1,350 logged wells in the Illinois State Geological Survey water well records (records as of 2026-08-20). Every number links back to the public record.
Ranked by wells drilled in Mercer County since 2016 (then all-time), from the full ISGS 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 Mercer County?
White, Matt has drilled the most Mercer County wells in the recent record — 42 since 2016, 58 in the county all-time.
How many well drilling companies work in Mercer County?
60 companies in the ISGS record have drilled wells in Mercer County; 11 of them have drilled somewhere in Illinois since 2022. Smaller operators below the record threshold may also serve the area.
How deep is a typical well in Mercer County?
The median drilled depth in Mercer County is 395 ft, based on 1,579 recorded wells. Depths, water levels, and yields are on the Mercer County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on the Mercer County wells page.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Mercer County — never sold elsewhere.
Drill in Mercer County?
If your company is on this list, your profile is free to claim — confirm your details and add your contact information so Mercer County property owners reach you directly.
Claim your profileFree to claim · built from ISGS public well-log records.