⟁ California Well Data field records · 2026 survey

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Best well drillers in Napa County, California

Not a pay-to-play list: these are the 104 drilling companies with wells on record in Napa County, ranked by wells actually drilled here — 8,417 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.

104companies on record
36active since 2022
8,417wells in county record
#CompanyIn Napa Co. since 2016All-time in countyStatewide
1 Huckfeldt Well Drilling Inc. 387 1,693 1,881
2 MC Lean & Williams Inc. 122 812 830
3 Weeks Drilling And Pump Co. 79 597 14,789
4 Bess D Pump & Well Elect 72 344 359
5 Pulliam Well Exploration Inc. 41 173 234
6 Slagle Drilling Corp 39 39 45
7 Bill Pulliam 36 1,227 1,299
8 Les Petersen Drilling & Pump Inc. 28 119 4,096
9 Pitcher Drilling Co. 14 15 1,232
10 Fisch Brothers Drilling, Inc. 7 57 6,393
11 Clear Heart Drilling Inc. 5 19 694
12 Gregory Drilling Incorporated 5 5 143
13 American Construction And Supply Inc. 4 6 1,685
14 Well Industries Inc. 4 4 558
15 Bertram Drilling Inc. 3 14 1,171
16 Cascade Drilling LP 2 11 826
17 Canepa And Sons Inc. 2 3 3,173
18 Mickelson Enterprises Inc. 2 2 174
19 Doshier-Gregson Inc. 1 842 1,156
20 Gary C Tanko Well Drilling Inc. 1 3 12,022
21 Sullivan Drilling Inc. 1 1 1,387
22 Guardino Well Drilling Inc. 1 1 1,736
23 Parks Water Resources 1 1 385
24 Wildrose Drilling LLC 1 1 102
25 Will Peterson Well Drilling 1 1 173
26 Koenig Drilling 1 1 39
27 Taber Drilling 1 1 87
28 Doshier And Gregson Drilling Inc. — 457 489
29 Signal Drilling Company — 318 8,301
30 Mel Meyer — 287 101,127
31 Walter F Rettela — 172 389
32 Doshier-Gregson Well Drilling Service — 144 167
33 W D C Exploration & Wells — 141 2,421
34 Mclean & Williams Well Drilling — 113 116
35 Rettela & Pulliam — 108 129
36 Williams Bros Well Drilling — 76 77
37 E E Luhdorff — 48 155
38 Woodward Drilling Company Inc. — 45 1,542
39 Mclean & Williams Inc. — 37 37
40 Ralph A Johnson — 35 35
41 Layne Christensen Company — 32 2,362
42 Morris Drilling — 31 31
43 Larbre Well Drilling And Pumps Inc. — 26 895
44 American Well & Pump Service — 25 254
45 Ben Barrow Company — 23 49
46 Anderson K Drilling, Inc. — 21 1,136
47 Tri-K Drilling — 19 935
48 Cascade Drilling Inc. - California — 17 3,167
49 Gregg Drilling & Testing Inc. — 16 4,828
50 Dan MC Mullen Well Drilling — 16 61
51 J W Evans & Sons — 15 44
52 Bfr Associates — 12 5,621
53 Vaca Drilling Co. /Del Crew JR — 12 2,745
54 Williams Well Drilling — 12 376
55 R F Keyt — 12 299
56 Vaca Drilling Co. — 12 176
57 Larry Herman Drilling — 12 34
58 Crislip Drilling Company — 11 1,174
59 Nutting And Jensen Drilling — 10 1,410
60 Allen Drilling Co. — 9 1,295
61 Irwin Well Drilling — 7 1,906
62 Western Well Drilling Co. Ltd — 5 842
63 Mclaren Environmental Engineering — 5 30
64 Peters Drilling And Pump Service — 4 11,563
65 Fisch Bros Pump Service — 4 620
66 All Well Abandonment — 4 607
67 Resonantsonic International Inc. — 4 397
68 Spectrum Exploration Inc. — 4 307
69 Burnham & Plum Well Drilling Co. Inc. — 4 177
70 Rural Drilling Co. — 4 55
71 J C Water Well Drilling — 4 52
72 Fredrick Mark Pump & Supply Co. — 3 295
73 Ballard & Foote — 3 870
74 H A M Drilling Inc. — 3 273
75 Larbre Well Driller — 3 138
76 Maggiora Bros Drilling Inc. — 2 4,674
77 Kvilhaug Drilling & Pump Inc. — 2 327
78 Pacific Coast Drilling — 2 262
79 Beylik Drilling & Pump Service — 2 1,267
80 H O Krossa — 2 681
81 Water-Tech Well Drilling — 2 665
82 Bartley Pump Inc. — 2 596
83 Seanaco Inc. — 2 327
84 Layne-Western Co. Inc. — 2 255
85 Jim's Pump & Drilling — 2 157
86 Cowart Well Drilling — 2 131
87 Martell Water Systems Inc. — 1 1,094
88 Pacific Coast Well & Pump Inc. — 1 182
89 Vannucci Technologies — 1 66
90 Aulman And Aulman Drilling Con — 1 1,251
91 Wilder, R., Drilling Company — 1 1,089
92 Kile's Well Drilling — 1 943
93 Baldwin & Son Well Drilling — 1 901
94 Sutter Pump Works — 1 449
95 Pambeau Pump & Well — 1 405
96 Harold Nutting — 1 313
97 Big Valley Drilling — 1 294
98 Weeks Drilling Co. — 1 217
99 Castle Construction & Well Drilling Inc. — 1 142
100 Xxx — 1 113
101 Precision Drilling Co. — 1 71
102 Xxx Soils Exploration SV — 1 48
103 James And Wilkerson Drilling — 1 37
104 Cofferdam Unwatering Corporation — 1 32

Ranked by wells drilled in Napa 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 Napa County?

Huckfeldt Well Drilling Inc. has drilled the most Napa County wells in the recent record — 387 since 2016, 1,693 in the county all-time.

How many well drilling companies work in Napa County?

104 companies in the DWR record have drilled wells in Napa County; 36 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 Napa County?

The median drilled depth in Napa County is 310 ft, based on 9,860 recorded wells. Depths, water levels, and yields are on the Napa County wells page.

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

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