Best well drillers in Cass County, Illinois
Not a pay-to-play list: these are the 50 drilling companies with wells on record in Cass County, ranked by wells actually drilled here — 807 logged wells in the Illinois State Geological Survey water well records (records as of 2026-10-12). Every number links back to the public record.
Ranked by wells drilled in Cass 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 Cass County?
Greenfield, Edward K. has drilled the most Cass County wells in the recent record — 10 since 2016, 212 in the county all-time.
How many well drilling companies work in Cass County?
50 companies in the ISGS record have drilled wells in Cass County; 9 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 Cass County?
The median drilled depth in Cass County is 67 ft, based on 930 recorded wells. Depths, water levels, and yields are on the Cass County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on the Cass County wells page.
Free. Goes to licensed drillers working Cass County.
Drill in Cass County?
If your company is on this list, your profile is free to claim — confirm your details and add your contact information so Cass County property owners reach you directly.
Claim your profileFree to claim · built from ISGS public well-log records.