Illinois Well Data field records · 2026 survey

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Best well drillers in Clark County, Illinois

Not a pay-to-play list: these are the 52 drilling companies with wells on record in Clark County, ranked by wells actually drilled here — 865 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.

52companies on record
6active since 2022
865wells in county record
#CompanyIn Clark Co. since 2016All-time in countyStatewide
1 Skinner, Todd 7 7 562
2 Speth, James 1 11 1,113
3 Baker, J. Curtis 1 3 55
4 Findlay Bros. Well Drilling 1 1 305
5 Durbin, Dominique 1 1 102
6 Erwin, James R. 1 1 36
7 Kohnen, Clarence 121 12,561
8 Hacker, Delbert 110 644
9 Hacker, Marvin 71 223
10 Erwin, Harold E. 68 545
11 Van Gilder, Richard E. 62 136
12 Miller, Claude W. 57 208
13 Vangilder, Richard E. 45 112
14 Hacker, Tim 35 364
15 Sloan, Thomas F. 33 448
16 Ryan, John H. 30 116
17 Baker, Earl Jr. 28 1,667
18 Knierim, James 21 897
19 Dudley Drillers 20 29
20 Smith Well Drilling 19 60
21 Whiston, George N. 15 29
22 Courson, Roger 14 1,443
23 Ruester, John T. 11 166
24 Dartwater Well Drlg 11 40
25 Bartmess, John B. 8 51
26 Reynolds Well Drilling 5 1,657
27 Beckett, Donald 5 655
28 Grosch, Wayne A. 5 528
29 Whiston, George Jr. 4 32
30 Reynolds, Joseph R. 3 2,477
31 Layne Western Co., Inc. 3 1,442
32 Jones, Gerald B. 3 313
33 Arron Baum 3 223
34 Charles Hollinshead 3 219
35 Baker, Donald K. 3 82
36 Ready, Dale 3 42
37 Wiesenhofer, Andrew 2 1,411
38 Mckinney, Ted 2 310
39 Allabaugh, John H. 2 78
40 Layne-Western Drlg 2 61
41 Green, William E. 2 38
42 Mumma Bros Drilling Inc. 2 26
43 Knierim, Phil 1 5,361
44 Sims, R. Marc Jr. 1 840
45 Luttrell, Gerald Dean 1 545
46 Jones, Gerald K. 1 388
47 Jacobs, Ray E. 1 221
48 Baum, Arron 1 187
49 Eaton Well Drlg.(Zane Eaton) 1 179
50 Baker, Donald 1 133
51 Randy Gebke 1 50
52 Tegeler, Brian J. 1 26

Ranked by wells drilled in Clark 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 Clark County?

Skinner, Todd has drilled the most Clark County wells in the recent record — 7 since 2016, 7 in the county all-time.

How many well drilling companies work in Clark County?

52 companies in the ISGS record have drilled wells in Clark County; 6 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 Clark County?

The median drilled depth in Clark County is 65 ft, based on 1,151 recorded wells. Depths, water levels, and yields are on the Clark County wells page.

Well depths, static water levels, tested yields, and drilling cost estimates for this county live on the Clark County wells page.

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