⟁ 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 — 978 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.

46companies on record
6active since 2022
978wells in county record
#CompanyIn Jasper Co. since 2016All-time in countyStatewide
1 Schmalfeldt, Todd 12 12 200
2 Haake, Ralph 2 7 903
3 Baker, J. Curtis 2 3 59
4 Sloan, Thomas F. 1 29 463
5 Jones, Gerald K. 1 26 393
6 Hemmen, Jake 1 1 27
7 Kohnen, Clarence — 438 13,419
8 Jones, Gerald B. — 86 315
9 Hacker, Delbert — 80 646
10 Courson, Roger — 63 1,463
11 Hacker, Tim — 44 388
12 Speth, James — 22 1,212
13 Green, William E. — 20 38
14 Baker, Earl Jr. — 18 1,933
15 Green, William Ernest — 12 38
16 Abbott, Albert — 11 344
17 Hacker, Marvin — 9 227
18 Bartmess, John B. — 9 51
19 Arron Baum — 8 302
20 Beckett, Donald — 7 911
21 Whiston, George N. — 7 29
22 Kohnen, Clarence E. — 6 172
23 Tim Hacker — 6 37
24 Miller, Claude W. — 5 208
25 Charles Hollinshead — 4 224
26 H&h Drilling — 4 197
27 Whiston, George Jr. — 4 32
28 Knierim, James — 3 900
29 Woodward, Lawrence — 3 421
30 Baum, Arron — 3 270
31 Baker, E. C. & Sons — 3 255
32 Speth, David — 3 228
33 Hollinshead, Charles — 3 185
34 Gebke, Randy — 2 97
35 Wilson, Deneal — 2 646
36 Speth, David A. — 2 241
37 Miles & Sons — 2 230
38 Lowry, John H. — 2 121
39 Ryan, John H. — 2 116
40 NO Company — 1 564
41 Jacobs, Ray E. — 1 222
42 David Harper — 1 205
43 Courson, Richard C. — 1 144
44 Allabaugh, John H. — 1 79
45 Randy Gebke — 1 68
46 Woodward, Larry A. — 1 62

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 1,155 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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