Best well drillers in Glenn County, California
Not a pay-to-play list: these are the 28 drilling companies with wells on record in Glenn County, ranked by wells actually drilled here — 5,921 logged wells in the California Department of Water Resources (DWR) Well Completion Reports database (records as of 2026-08-14). Every number links back to the public record.
Ranked by wells drilled in Glenn County since 2016 (then all-time), from the full DWR 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 Glenn County?
Sullivan Drilling Inc. has drilled the most Glenn County wells in the recent record — 367 since 2016, 394 in the county all-time.
How many well drilling companies work in Glenn County?
28 companies in the DWR record have drilled wells in Glenn County; 22 of them have drilled somewhere in California since 2022. Smaller operators below the record threshold may also serve the area.
How deep is a typical well in Glenn County?
The median drilled depth in Glenn County is 160 ft, based on 6,382 recorded wells. Depths, water levels, and yields are on the Glenn County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on the Glenn County wells page.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Glenn County — never sold elsewhere.
Drill in Glenn County?
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Claim your profileFree to claim · built from DWR public well-log records.