⟁ Wisconsin Well Data field records · 2026 survey

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Best well drillers in Jefferson County, Wisconsin

Not a pay-to-play list: these are the 103 drilling companies with wells on record in Jefferson County, ranked by wells actually drilled here — 6,076 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.

103companies on record
20active since 2022
6,076wells in county record
#CompanyIn Jefferson Co. since 2016All-time in countyStatewide
1 Sam's Well Drilling Inc. 820 1,559 21,895
2 Herr Well Drilling Inc. 147 1,506 10,263
3 Roschi Bros Well Drlg & Pump Inc. 46 104 1,592
4 D & D Well & Pumps LLC 37 62 556
5 4-D Water Well & Pump Service LLC 20 20 707
6 Krizan, Kenneth J 12 12 342
7 Gehring, Lance M 11 11 1,126
8 Anhalt Well Drlg & Pump Inc. 8 48 1,222
9 Bloyer Well & Pump Co. Inc. 8 10 573
10 Biersack, Robert K 8 8 272
11 Sweeney, Kenneth R 7 7 904
12 Lance M Gehring 4 4 939
13 Steffes, Daniel J 3 3 1,151
14 Gehring Lance Well Drilling Inc. 3 3 375
15 Lovelace Well Drilling Inc. 2 36 2,504
16 Municipal Well & Pump/Midwest Well 2 2 70
17 Timothy J Jenks 2 2 1,553
18 Kenneth R Sweeney 1 20 2,346
19 Webster Brad & Sons Drilling Inc. 1 12 1,493
20 Gibour Well & Pump Serv Inc. 1 5 561
21 Hintz Larry D 1 5 254
22 Webster & Sons Well Drilling, LLC 1 1 176
23 Hezpaz Enterprizes 1 1 152
24 Rodamaker, Robert J 1 1 190
25 Lange Plumbing Inc. 1 1 123
26 Robert J Rodamaker 1 1 148
27 Umland Richard L 1 1 46
28 Sams Rotary Drillers Inc. — 686 12,103
29 Michael Hartman — 331 5,782
30 J F Werner — 284 376
31 Bowling Ray, Inc. — 174 389
32 Albin Vogel — 157 204
33 Ray R Bowling — 145 307
34 Aqua Well & Pump Systems Inc. — 87 773
35 Michael G Hartman — 76 1,407
36 Werner J F — 70 101
37 Govert Well & Pump Llp — 48 1,775
38 Central Well Drilling LLC — 43 2,757
39 Frederick F Kuck — 43 754
40 Larry D Hintz — 38 902
41 Vogel Albin — 37 63
42 Richard L Danecki — 34 1,182
43 Govert Bros Well Drilling Co. — 30 1,587
44 Layne Christensen Company — 26 222
45 Werner, Jim — 26 26
46 Patrick J Lahr — 22 1,066
47 Todd Huemann — 18 3,658
48 Richard Berkholtz — 18 1,149
49 Richard Morse — 18 408
50 Karl I Stenerson — 16 1,361
51 Emanuel Burgarino — 15 611
52 Edwin D Greenfield — 13 570
53 Roschi Bros Well Drlg @ Pump Inc. — 12 1,140
54 Michael J Barr — 10 621
55 Paul F Kuck — 10 123
56 Aqua Well @ Pump Systems Inc. — 10 83
57 Egofske Porter Drilling Inc. — 9 761
58 D & D Well Drilling Corp — 8 148
59 D @ D Drilling Co. Inc. — 7 285
60 Kuck Frederick F — 7 83
61 Robert W Showers — 7 80
62 James E Cheney — 6 629
63 Hartman Michael — 6 446
64 D And D Drilling Company Inc. — 6 207
65 Phillip Hastings — 6 92
66 Steve Hartman — 5 431
67 Artesian Well & Pump Co. — 5 118
68 Hartman, Steve — 4 60
69 Dr. John Harkin, UW-Dept. OF Soil Science — 4 40
70 Zoellner Central Well Drilling — 3 1,191
71 Govert Walter And Leon — 3 264
72 Berkholtz Richard — 3 182
73 Danecki, Richard L — 3 113
74 Greenfield Edwin D — 3 87
75 Municipal Well @ Pump Inc. — 3 68
76 Van DE Yacht Leo Well Drilling Inc. — 2 8,998
77 Richard E Berkholtz — 2 337
78 Lahr Well Drlg & Pump Serv Inc. — 2 276
79 Stenerson Karl I — 2 260
80 Robert S Eddy — 2 161
81 Lahr Patrick J — 2 123
82 Roschi Bros Welldrlg And Pump IN — 2 113
83 Morse Richard — 2 59
84 Daniel J Steffes — 1 4,646
85 Van DE Yacht Bill Wtr Well & Specia — 1 3,200
86 Bruce A Walker — 1 1,325
87 Ace Well Drilling Inc. — 1 858
88 Terry Farago — 1 635
89 Aschauer E G @ Sons Inc. — 1 611
90 Sam Rodamaker — 1 497
91 Robert K Biersack — 1 435
92 Albin R Herbeck — 1 360
93 Slager Larry J — 1 339
94 Bradley S Webster — 1 111
95 Water Wells Inc. — 1 108
96 Kenneth J Sweeney — 1 95
97 Barr Michael J — 1 88
98 James D Cheney — 1 84
99 Rock Johnson — 1 43
100 Louis G Sievert — 1 34
101 Layne Northwest Company — 1 30
102 Layne Western Co. Inc. — 1 26
103 Hubert R Johnson — 1 25

Ranked by wells drilled in Jefferson 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 Jefferson County?

Sam's Well Drilling Inc. has drilled the most Jefferson County wells in the recent record — 820 since 2016, 1,559 in the county all-time.

How many well drilling companies work in Jefferson County?

103 companies in the WI DNR record have drilled wells in Jefferson County; 20 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 Jefferson County?

The median drilled depth in Jefferson County is 142 ft, based on 11,175 recorded wells. Depths, water levels, and yields are on the Jefferson County wells page.

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

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