California Well Data field records · 2026 survey

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Best well drillers in El Dorado County, California

Not a pay-to-play list: these are the 125 drilling companies with wells on record in El Dorado County, ranked by wells actually drilled here — 15,232 logged wells in the California Department of Water Resources (DWR) Well Completion Reports database (records as of 2026-08-14). Every number links back to the public record.

125companies on record
38active since 2022
15,232wells in county record
#CompanyIn El Dorado Co. since 2016All-time in countyStatewide
1 Rumsey / Lang Well Drilling & Pumps Inc. 479 683 729
2 Gary C Tanko Well Drilling Inc. 185 3,772 12,022
3 Triangle Well Drilling 174 2,848 2,894
4 Diamond Well Drilling Company Inc. 17 272 1,150
5 Bruce Mackay Pump & Well Service Inc. 11 20 260
6 Top Hat Well Drilling 10 10 31
7 T S A Drilling Inc. Dba Penecore Drilling 9 9 577
8 American Well Drilling And Pump Service 6 7 439
9 Gulf Shore Construction Services Inc. 5 5 28
10 Jensen Kelin Drilling 3 3 94
11 Kleinfelder Inc. 3 3 54
12 Woodward Drilling Company Inc. 2 49 1,542
13 Peters Drilling And Pump Service 2 4 11,563
14 Cascade Drilling L P 2 3 2,827
15 Briski Well Drilling Co. 1 159 2,747
16 Hunt Drilling Company Inc. 1 100 1,213
17 Points West Drilling 1 3 78
18 Gregg Drilling LLC 1 1 558
19 American Construction And Supply Inc. 1 1 1,685
20 Well Industries Inc. 1 1 558
21 Dicken's Drilling 1 1 490
22 Castle Construction & Well Drilling Inc. 1 1 142
23 Robert Dawson Drilling & Pumps 1,357 1,415
24 Arrow Well Drilling 1,199 1,202
25 Peter Garicia 651 695
26 Water-Tech Well Drilling 599 665
27 Bfr Associates 507 5,621
28 Pambeau Pump & Well 402 405
29 Bill Rambeau Pump & Well Drilling 262 288
30 Kearns-Rivard Well Drilling 241 291
31 American River Well Drilling 177 180
32 White, Walter N. 175 175
33 Blain & Imbach Well Drilling 158 168
34 Kile's Well Drilling 150 943
35 Weston E Dawson 126 147
36 Tanko Gary C Well Drilling 106 284
37 Preston Well Drilling 90 698
38 Melvin L Lukins 90 93
39 Redhawk Drilling 79 1,197
40 James W Imbach Well Drilling 76 86
41 Signal Drilling Company 55 8,301
42 Wayne Drilling Co. 53 1,113
43 Lang Pump & Well Company 52 60
44 Tom Hunt Drilling Co. 49 418
45 W E Blain 43 82
46 Dunn Jack Inc. 39 1,424
47 Mel Meyer 31 101,127
48 Trihydro Corporation 30 46
49 Bertram Drilling Inc. 23 1,171
50 C & M Drilling Co. 23 41
51 J Field Drilling Co. 22 275
52 All Well Abandonment 21 607
53 R Wilder Gen Cont 20 409
54 Wayne Environmental Drilling Company Inc. 17 664
55 Humboldt Drilling & Pump Co. 16 131
56 Waters Backhoe & Dozer Service 14 110
57 W D C Exploration & Wells 14 2,421
58 Tanko Bros Inc. 13 2,617
59 Cascade Drilling Inc. - California 12 3,167
60 Resonantsonic International Inc. 12 397
61 Baker Scott 12 33
62 Tanko Well Drilling 11 3,311
63 Harris A J Inc. A California Corporation 11 416
64 West Hazmat Drilling Corp 10 1,702
65 Allmon C T Development Co. 10 153
66 Richardson Ernest Walker 10 129
67 Aaa Pump 10 28
68 Fredrick Mark Pump & Supply Co. 9 295
69 Boart Longyear Company 9 172
70 Gregg Drilling & Testing Inc. 9 4,828
71 Starr Drilling And Pump Co. 9 875
72 A B C Liovin Drilling Inc. 8 1,281
73 Bc2 Environmental LLC 7 416
74 Harris A J Co. 7 239
75 Joseph F. Leisek 7 126
76 Enprobe Environental Direct Push & Drilling Services 7 76
77 Huckfeldt Well Drilling Inc. 6 1,881
78 Seebeck M E 6 567
79 Points West Inc. 6 165
80 Patten Well Drilling 5 421
81 Cornerstone Pump & Well Inc. 5 90
82 Keener Exploration Drilling Co. 5 37
83 Confluence Environmental Inc. 4 65
84 Roadrunner Drilling & Pump Company Inc. 4 205
85 Beylik Drilling & Pump Service 4 1,267
86 Tahoe Pump & Drilling Inc. 4 358
87 Paul Williams And Sons 4 175
88 Geo W Taylor Well Drlg Service 4 58
89 Westex 4 40
90 S D Drilling Inc. 4 31
91 Cascade Drilling LP 3 826
92 Zim Industries Inc. Dba Bakersfield Well & Pump Co. 3 1,716
93 Sargent Drilling 3 442
94 American Well Drilling 3 307
95 Island Drilling 3 221
96 Well Drilling 3 100
97 Alva E Morgan 3 45
98 Cofferdam Unwatering Corporation 3 32
99 Taber Consultants 3 30
100 Canepa And Sons Inc. 2 3,173
101 Wilder, R., Drilling Company 2 1,089
102 Baldwin & Son Well Drilling 2 901
103 ED Fields Water Well Drilling 2 234
104 D W Moore Well Drilling 2 170
105 Steve's Pumps & Well Drilling Inc. 2 162
106 Hunt Tom Drilling & Construction Co. 2 112
107 General Development 2 65
108 Aqua Drilling & Well Service Inc. 2 37
109 Johnson Drilling Co. 1 11,865
110 Eaton Drilling Co. LLC 1 3,793
111 Baldwin & Son Well Drillers 1 319
112 D Hedman & Co. 1 1,305
113 Diversified Exploration Co. Inc. 1 751
114 Testamerica Drilling Corp 1 378
115 V & W Drilling 1 310
116 Water Well Drilling Cont 1 263
117 Beylik Drilling Inc. 1 174
118 Ralph E Anderson 1 171
119 Scott Xxx PC Exploration Inc. 1 154
120 M R Peck & Sons 1 125
121 Orsolini Well Drilling 1 112
122 Modoc Drilling 1 90
123 Stang Hydronics Inc. 1 56
124 Jack J Dunn 1 54
125 Environmental West Drilling 1 38

Ranked by wells drilled in El Dorado County since 2016 (then all-time), from the full DWR 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 El Dorado County?

Rumsey / Lang Well Drilling & Pumps Inc. has drilled the most El Dorado County wells in the recent record — 479 since 2016, 683 in the county all-time.

How many well drilling companies work in El Dorado County?

125 companies in the DWR record have drilled wells in El Dorado County; 38 of them have drilled somewhere in California since 2022. Smaller operators below the record threshold may also serve the area.

How deep is a typical well in El Dorado County?

The median drilled depth in El Dorado County is 250 ft, based on 17,803 recorded wells. Depths, water levels, and yields are on the El Dorado County wells page.

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

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