Illinois Well Data field records · 2026 survey

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Best well drillers in Jasper County, Illinois

Not a pay-to-play list: these are the 46 drilling companies with wells on record in Jasper County, ranked by wells actually drilled here — 957 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.

46companies on record
6active since 2022
957wells in county record
#CompanyIn Jasper Co. since 2016All-time in countyStatewide
1 Schmalfeldt, Todd 12 12 197
2 Haake, Ralph 2 7 798
3 Baker, J. Curtis 2 3 55
4 Sloan, Thomas F. 1 28 448
5 Jones, Gerald K. 1 25 388
6 Hemmen, Jake 1 1 27
7 Kohnen, Clarence 431 12,561
8 Jones, Gerald B. 86 313
9 Hacker, Delbert 79 644
10 Courson, Roger 59 1,443
11 Hacker, Tim 42 364
12 Speth, James 21 1,113
13 Green, William E. 20 38
14 Baker, Earl Jr. 18 1,667
15 Green, William Ernest 12 38
16 Abbott, Albert 11 337
17 Hacker, Marvin 9 223
18 Bartmess, John B. 9 51
19 Arron Baum 8 223
20 Beckett, Donald 7 655
21 Whiston, George N. 7 29
22 Kohnen, Clarence E. 6 159
23 Tim Hacker 6 36
24 Miller, Claude W. 5 208
25 Charles Hollinshead 4 219
26 Whiston, George Jr. 4 32
27 Knierim, James 3 897
28 Baker, E. C. & Sons 3 232
29 Baum, Arron 3 187
30 Hollinshead, Charles 3 183
31 H&h Drilling 3 183
32 Gebke, Randy 2 93
33 Wilson, Deneal 2 600
34 Woodward, Lawrence 2 388
35 Speth, David A. 2 236
36 Speth, David 2 217
37 Miles & Sons 2 186
38 Ryan, John H. 2 116
39 NO Company 1 508
40 Jacobs, Ray E. 1 221
41 David Harper 1 200
42 Courson, Richard C. 1 143
43 Lowry, John H. 1 118
44 Allabaugh, John H. 1 78
45 Woodward, Larry A. 1 60
46 Randy Gebke 1 50

Ranked by wells drilled in Jasper 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 Jasper County?

Schmalfeldt, Todd has drilled the most Jasper County wells in the recent record — 12 since 2016, 12 in the county all-time.

How many well drilling companies work in Jasper County?

46 companies in the ISGS record have drilled wells in Jasper 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 Jasper County?

The median drilled depth in Jasper County is 40 ft, based on 1,112 recorded wells. Depths, water levels, and yields are on the Jasper County wells page.

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

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