⟁ California Well Data field records · 2026 survey

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Best well drillers in Yolo County, California

Not a pay-to-play list: these are the 133 drilling companies with wells on record in Yolo County, ranked by wells actually drilled here — 7,477 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.

133companies on record
51active since 2022
7,477wells in county record
#CompanyIn Yolo Co. since 2016All-time in countyStatewide
1 Parks Water Resources 181 221 385
2 Eaton Drilling Co. LLC 128 2,131 3,793
3 Sullivan Drilling Inc. 70 232 1,387
4 Cache Creek Drilling 56 149 247
5 Wildrose Drilling LLC 24 24 102
6 Woodward Drilling Company Inc. 21 27 1,542
7 Nor - Cal Pump & Well Drilling Inc. 21 22 248
8 Cascade Drilling L P 18 40 2,827
9 Goodell Well & Pump Service 18 35 342
10 Fox Loomis Incorporated 18 25 225
11 Roadrunner Drilling & Pump Company Inc. 12 38 205
12 Well Industries Inc. 12 12 558
13 Vannucci Technologies 11 17 66
14 Jensen Kelin Drilling 9 9 94
15 American Construction And Supply Inc. 6 10 1,685
16 Kvilhaug Drilling & Pump Inc. 6 6 327
17 National E W P Inc. 6 6 431
18 Zim Industries Inc. Dba Bakersfield Well & Pump Co. 4 10 1,716
19 Seebeck M E 3 297 567
20 Pitcher Services LLC 3 3 114
21 Stonehouse Well Drilling 3 3 157
22 Valley Pump & Motor Works Inc. 2 17 181
23 V & W Drilling 2 15 310
24 Canepa And Sons Inc. 2 7 3,173
25 Modern Technology Resources Inc. 2 4 44
26 Bertram Drilling Inc. 2 3 1,171
27 M & M Well Drilling 2 3 74
28 Cascade Drilling LP 2 2 826
29 Gregory Drilling Incorporated 2 2 143
30 Blaine's Well Drilling 2 2 55
31 Mid State Pump And Drilling 2 2 74
32 Phifer Well Service 2 2 37
33 Pitcher Drilling Co. 1 4 1,232
34 Martell Water Systems Inc. 1 3 1,094
35 Farwest Corrosion Control Company 1 2 2,649
36 Vics Well Drilling Inc. 1 1 337
37 Castle Construction & Well Drilling Inc. 1 1 142
38 Points West Drilling 1 1 78
39 Aulman And Aulman Drilling Con — 946 1,251
40 Layne Christensen Company — 515 2,362
41 Signal Drilling Company — 392 8,301
42 Vaca Drilling Co. /Del Crew JR — 386 2,745
43 Cooper Drilling Co. — 307 315
44 Mel Meyer — 145 101,127
45 Aulman & Aulman — 142 145
46 Cascade Drilling Inc. - California — 100 3,167
47 Anderson & Seebeck — 97 178
48 W D C Exploration & Wells — 92 2,421
49 H O Krossa — 84 681
50 Resonantsonic International Inc. — 68 397
51 Beymer Well Service — 64 2,921
52 Graham & Son Drilling Co. — 62 66
53 E E Luhdorff — 56 155
54 Spectrum Exploration Inc. — 52 307
55 Gregg Drilling & Testing Inc. — 47 4,828
56 R D Norris & Son — 45 237
57 D & S Well Drilling — 41 84
58 D & D Drilling Inc. Dba Valley Drilling Co. — 36 1,282
59 M S Seebeck & Son — 33 75
60 Myers Brothers Well Drilling Inc. — 30 2,865
61 Williams Well Drilling — 30 376
62 Corder Drilling — 24 31
63 Water Well Drilling Cont — 21 263
64 Ronald L Clark Clark Water Svc — 21 43
65 Western Well Drilling Co. Ltd — 17 842
66 Vaca Drilling Co. — 17 176
67 Heer Nar S — 14 245
68 Westex — 13 40
69 D Hedman & Co. — 11 1,305
70 G Gakin Well Drilling — 10 147
71 W L Kirchgater — 9 98
72 Bradley & Sons Inc. — 8 3,627
73 Pacific Gas And Electric Company — 8 264
74 All Well Abandonment — 7 607
75 Testamerica Drilling Corp — 7 378
76 Humboldt Drilling & Pump Co. — 7 131
77 Doshier-Gregson Inc. — 6 1,156
78 A & A Gross Drilling — 6 816
79 Island Drilling — 6 221
80 Clark & Sons — 6 76
81 T S A Drilling Inc. Dba Penecore Drilling — 5 577
82 Kile's Well Drilling — 5 943
83 C & N Pump & Well Co. — 5 697
84 Moss Roscoe Company — 4 1,220
85 Norton Drilling — 4 596
86 Layne-Western Co. Inc. — 4 255
87 Bsk Associates — 4 37
88 Johnson Drilling Co. — 3 11,865
89 Wayne Environmental Drilling Company Inc. — 3 664
90 Baker Scott — 3 33
91 North State Well & Pump — 3 30
92 Weeks Drilling And Pump Co. — 2 14,789
93 Pacific Coast Well & Pump Inc. — 2 182
94 Sierra Exploration Drilling Co. Inc. — 2 802
95 Pacific Coast Drilling — 2 262
96 West Hazmat Drilling Corp — 2 1,702
97 Beylik Drilling & Pump Service — 2 1,267
98 Myers Brothers Inc. — 2 796
99 H T Ted Herr — 2 776
100 S A Andresen All Terrain Exploration — 2 468
101 Baker Lester A Wells & Pumps — 2 191
102 Star Well Drilling & Pump Co. — 2 122
103 Jeffrey David Harra — 2 109
104 Hydro Resources - West Inc. — 2 97
105 Ben Barrow Company — 2 49
106 Keener Exploration Drilling Co. — 2 37
107 Geo S Bandy — 2 36
108 Peters Drilling And Pump Service — 1 11,563
109 Earth Flow Drilling Company — 1 2,192
110 Hennings Bros Drilling Co. Inc. — 1 6,823
111 Bc2 Environmental LLC — 1 416
112 Clear Heart Drilling Inc. — 1 694
113 Superior Well Service — 1 327
114 Rindahl Drilling — 1 110
115 Robert Allen Nix Well Drilling — 1 373
116 Dejesus Pump & Well Drilling Inc. — 1 1,157
117 Wayne Drilling Co. — 1 1,113
118 Bootjack Drilling Inc. — 1 649
119 Ken Gross Pump Service — 1 507
120 Mitchell Drilling Environmental Corp — 1 199
121 American River Well Drilling — 1 180
122 Scott Xxx PC Exploration Inc. — 1 154
123 V J Mcgrew — 1 147
124 Richardson Ernest Walker — 1 129
125 Viking Drillers Inc. — 1 83
126 Sydney Geels IT Corporation — 1 78
127 Atec Drilling Co. — 1 63
128 Geo W Taylor Well Drlg Service — 1 58
129 S I Guardino — 1 43
130 Cofferdam Unwatering Corporation — 1 32
131 Big Valley Drilling & Exploration Co. — 1 32
132 Nor-Cal Pump & Well Service — 1 26
133 Butte Pump Service — 1 26

Ranked by wells drilled in Yolo 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 Yolo County?

Parks Water Resources has drilled the most Yolo County wells in the recent record — 181 since 2016, 221 in the county all-time.

How many well drilling companies work in Yolo County?

133 companies in the DWR record have drilled wells in Yolo County; 51 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 Yolo County?

The median drilled depth in Yolo County is 232 ft, based on 12,456 recorded wells. Depths, water levels, and yields are on the Yolo County wells page.

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

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