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Best well drillers in Rock County, Wisconsin
Not a pay-to-play list: these are the 66 drilling companies with wells
on record in Rock County, ranked by wells actually drilled here — 6,129 logged
wells in the Wisconsin Department of Natural Resources Groundwater Retrieval Network (GRN) well-construction records (records as of 2026-08-14). Every number links back to
the public record.
66companies on record
19active since 2022
6,129wells in county record
| # | Company | In Rock Co. since 2016 | All-time in county | Statewide |
|---|
| 1 | Sam's Well Drilling Inc. | 923 | 1,434 | 21,895 |
| 2 | Bloyer Well & Pump Co. Inc. | 144 | 425 | 573 |
| 3 | Anhalt Well Drlg & Pump Inc. | 111 | 128 | 1,222 |
| 4 | Martin, Charles Wade | 32 | 32 | 34 |
| 5 | Krizan, Kenneth J | 5 | 5 | 342 |
| 6 | Herr Well Drilling Inc. | 3 | 105 | 10,263 |
| 7 | Charles Wade Martin | 3 | 35 | 37 |
| 8 | Lovelace Well Drilling Inc. | 3 | 27 | 2,504 |
| 9 | Niffenegger Well & Pump Inc. | 2 | 13 | 1,201 |
| 10 | Haupt Well Drlg Inc. | 2 | 4 | 1,723 |
| 11 | Lance M Gehring | 2 | 4 | 939 |
| 12 | Sweeney, Kenneth R | 1 | 1 | 904 |
| 13 | Roschi Bros Well Drlg & Pump Inc. | 1 | 1 | 1,592 |
| 14 | Webster & Sons Well Drilling, LLC | 1 | 1 | 176 |
| 15 | Biersack, Robert K | 1 | 1 | 272 |
| 16 | Binz, David J | 1 | 1 | 38 |
| 17 | Kenneth J Krizan | 1 | 1 | 304 |
| 18 | Govert Well & Pump Llp | — | 1,306 | 1,775 |
| 19 | Govert Bros Well Drilling Co. | — | 1,271 | 1,587 |
| 20 | Edwin D Greenfield | — | 393 | 570 |
| 21 | Sams Rotary Drillers Inc. | — | 304 | 12,103 |
| 22 | Govert Walter And Leon | — | 232 | 264 |
| 23 | Allen E Smith | — | 111 | 157 |
| 24 | Todd Huemann | — | 57 | 3,658 |
| 25 | Michael Hartman | — | 44 | 5,782 |
| 26 | Greenfield Edwin D | — | 42 | 87 |
| 27 | Larry D Hintz | — | 21 | 902 |
| 28 | Aqua Well & Pump Systems Inc. | — | 21 | 773 |
| 29 | Bowling Ray, Inc. | — | 21 | 389 |
| 30 | Patrick J Lahr | — | 9 | 1,066 |
| 31 | Aqua Well @ Pump Systems Inc. | — | 7 | 83 |
| 32 | James E Cheney | — | 6 | 629 |
| 33 | Webster Brad & Sons Drilling Inc. | — | 5 | 1,493 |
| 34 | Layne Christensen Company | — | 5 | 222 |
| 35 | Kenneth R Sweeney | — | 4 | 2,346 |
| 36 | Richard Berkholtz | — | 4 | 1,149 |
| 37 | Werner J F | — | 4 | 101 |
| 38 | Central Well Drilling LLC | — | 3 | 2,757 |
| 39 | ED Niffenegger JR | — | 3 | 254 |
| 40 | Niffenegger Well @ Pump Inc. | — | 3 | 220 |
| 41 | Albin Vogel | — | 3 | 204 |
| 42 | Vogel Albin | — | 3 | 63 |
| 43 | Sylvester R Haupt | — | 2 | 1,031 |
| 44 | Groth Drilling Co. Inc. | — | 2 | 844 |
| 45 | Hartman Michael | — | 2 | 446 |
| 46 | Richard E Berkholtz | — | 2 | 337 |
| 47 | Niffenegger ED JR | — | 2 | 92 |
| 48 | Groth Water Wells Inc. | — | 1 | 1,539 |
| 49 | Gohlke Well Drilling Llp | — | 1 | 864 |
| 50 | Huemann Jos H & Sons Inc. | — | 1 | 94 |
| 51 | Beach Pump & Well Service Inc. | — | 1 | 207 |
| 52 | Francis X Faherty | — | 1 | 739 |
| 53 | Michael L Coons | — | 1 | 601 |
| 54 | James A Hornung | — | 1 | 402 |
| 55 | J F Werner | — | 1 | 376 |
| 56 | Ray R Bowling | — | 1 | 307 |
| 57 | Hintz Larry D | — | 1 | 254 |
| 58 | C T W Corp | — | 1 | 149 |
| 59 | Harmon Finley | — | 1 | 146 |
| 60 | Lahr Patrick J | — | 1 | 123 |
| 61 | Russell L Krizan | — | 1 | 87 |
| 62 | Bill Van DE Yacht | — | 1 | 84 |
| 63 | James D Cheney | — | 1 | 84 |
| 64 | James L Dietzman | — | 1 | 50 |
| 65 | David J Binz | — | 1 | 42 |
| 66 | Layne Northwest Company | — | 1 | 30 |
Ranked by wells drilled in Rock County since 2016 (then all-time), from the full WI DNR
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 Rock County?
Sam's Well Drilling Inc. has drilled the most Rock County wells in the recent record — 923 since 2016, 1,434 in the county all-time.
How many well drilling companies work in Rock County?
66 companies in the WI DNR record have drilled wells in Rock County; 19 of them have drilled somewhere in Wisconsin since 2022. Smaller operators below the record threshold may also serve the area.
How deep is a typical well in Rock County?
The median drilled depth in Rock County is 140 ft, based on 14,048 recorded wells. Depths, water levels, and yields are on the Rock County wells page.
Well depths, static water levels, tested yields, and drilling cost estimates for this county live on
the Rock County wells page.
Drill in Rock County?
If your company is on this list, your profile is free to claim — confirm your details and add your
contact information so Rock County property owners reach you directly.
Claim your profile Free to claim · built from WI DNR public well-log records.