Best well drillers in San Diego County, California

Not a pay-to-play list: these are the 151 drilling companies with wells on record in San Diego County, ranked by wells actually drilled here — 18,489 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.

151companies on record

39active since 2022

18,489wells in county record

#	Company	In San Diego Co. since 2016	All-time in county	Statewide
1	Stehly Brothers Drilling Inc.	511	1,539	2,191
2	Corrpro Companies Inc.	387	390	737
3	Fain Drilling & Pump Co. Inc.	297	2,727	3,029
4	J & H Drilling Co. Inc.	204	221	978
5	Farwest Corrosion Control Company	157	206	2,649
6	A B C Liovin Drilling Inc.	89	94	1,281
7	Cascade Drilling LP	85	87	826
8	Dierkop Paul	78	78	78
9	Heritage Well Service	33	34	528
10	Bc2 Environmental LLC	29	30	416
11	Cascade Drilling L P	22	76	2,827
12	Frank's Well Driling	19	736	740
13	Acme Drilling Company	17	1,173	1,439
14	Southern California Well Service LLC	13	13	50
15	Tri-County Drilling Inc.	11	195	227
16	L O Lynch Quality Wells & Pumps Inc.	10	45	3,373
17	Beks Acquisition Inc.	10	24	465
18	Layne Christensen Company	6	45	2,362
19	A Z C A Drilling & Pump Inc.	5	6	171
20	Dechenne Water Well Drilling Inc.	4	15	1,204
21	American Construction And Supply Inc.	3	89	1,685
22	Southwest Pump & Drilling Inc.	3	15	290
23	Nor - Cal Pump & Well Drilling Inc.	3	3	248
24	Detray Drilling	1	7	468
25	National E W P Inc.	1	4	431
26	Gregg Drilling LLC	1	1	558
27	Pitcher Services LLC	1	1	114
28	Water Well Service Inc.	1	1	145
29	Well Tec Services Inc.	1	1	126
30	Malcolm Drilling Company Inc.	1	1	63
31	Jensen Drilling Company	1	1	186
32	Fugro Usa Land Inc.	1	1	36
33	Rex Anderson Corp	—	1,459	1,493
34	Mel Meyer	—	906	101,127
35	Mcguffie Well Drilling	—	763	763
36	Butler Drilling Company	—	703	714
37	Frank Scully/Morrison Drilling Inc.	—	545	582
38	Manos Jim Drilling & Pump	—	541	542
39	Burt Drilling Co.	—	406	438
40	Bob Beeman Drilling Company	—	400	410
41	B & J Drilling Company	—	281	282
42	Multi Water Systems	—	258	269
43	American Drilling	—	247	970
44	Randazzo Drilling Services	—	195	202
45	Fisher & Sons Well Drilling Company	—	187	187
46	Sayatovich J	—	183	183
47	Western Well Drilling & Service	—	179	181
48	San Diego Pump & Well Drillers	—	157	160
49	Fain Drilling Company	—	154	167
50	Ralph E Anderson	—	148	171
51	Morrison Drilling	—	145	145
52	County Well Drilling	—	140	140
53	Kermit Heise	—	136	136
54	B & L Drilling Inc.	—	126	126
55	Aguanga Waterwell Services Inc.	—	125	504
56	Trunnell Wells & Pumps	—	118	384
57	Beale R B Inc.	—	104	105
58	West Hazmat Drilling Corp	—	99	1,702
59	Warden Drilling Co.	—	98	102
60	Hidden Valley Pump Systems Inc.	—	97	98
61	Testamerica Drilling Corp	—	96	378
62	Hugh M Harris Drilling Company	—	94	105
63	3-D Drilling Company	—	80	233
64	W D C Exploration & Wells	—	71	2,421
65	Fisher Well Drilling Company	—	70	70
66	Johnson Drilling Co.	—	65	11,865
67	Beylik Drilling & Pump Service	—	64	1,267
68	Mazzetti & Company	—	61	63
69	Mason Drilling	—	56	56
70	Gregg Drilling & Testing Inc.	—	53	4,828
71	Peterson Drilling & Pump	—	53	53
72	H-F Drilling, Inc.	—	49	618
73	Pioneer Drilling Inc.	—	48	61
74	Murphys Well Drilling	—	48	48
75	Stockton Pump & Machine Co.	—	43	43
76	Howard Pump Inc. A California Corporation	—	42	1,650
77	Applied Hydrogeologic Consultants Inc.	—	42	42
78	Coachella Valley Pump & Supply	—	41	660
79	Curtis Drilling Co.	—	40	42
80	Cascade Drilling Inc. - California	—	38	3,167
81	George Putman	—	38	40
82	Vaughn Maynard & Sons	—	36	51
83	Crum Sam Water Well Drilling Inc.	—	34	591
84	Thomas L Manos	—	33	33
85	Widner Arthur Grover	—	33	33
86	Runnels E L Well Drilling	—	25	25
87	Livermore Pump	—	25	25
88	Bfr Associates	—	18	5,621
89	Datum Exploration Inc.	—	18	223
90	Curtis Hole Drilling Company	—	18	187
91	Zim Industries Inc. Dba Bakersfield Well & Pump Co.	—	16	1,716
92	Sydney Geels IT Corporation	—	15	78
93	Ivan D Alexander Water Well Drilling	—	13	1,617
94	Midway Drilling Xxx	—	13	100
95	A & R Drilling	—	13	60
96	Jack Jones Wells & Pumps	—	12	1,145
97	Harich Construction	—	12	122
98	Vironex, Inc.	—	11	649
99	Layne-Western Co. Inc.	—	11	255
100	Mann Brothers	—	9	326
101	Valley Well Drilling LP	—	8	410
102	Moss Roscoe Company	—	8	1,220
103	M S Seebeck & Son	—	8	75
104	Cruse Drilling Co.	—	7	341
105	Rockwell Drilling Co.	—	7	244
106	Arrowhead Group	—	7	244
107	Rainbow Drilling	—	7	207
108	C C Scott	—	7	75
109	Agri-Cal Pump & Supply	—	6	105
110	Anderson G C Drilling & Pump	—	6	53
111	H2o Producers	—	6	33
112	Myers Brothers Inc.	—	5	796
113	Mccalla Brothers	—	5	578
114	Murrieta Water Well Drilling Company	—	5	80
115	Claude E Kelley	—	5	47
116	Yellow Jacket Drilling Services LLC	—	4	291
117	Palm Springs Pump Inc.	—	4	115
118	Don Redfeairn Drilling Co.	—	4	186
119	Alexander Dean Water Well Drilling	—	4	145
120	JC Drilling	—	4	110
121	Layne Environmental Services Inc.	—	4	104
122	Interstate Soils Sampling Inc.	—	4	75
123	Keener Exploration Drilling Co.	—	4	37
124	Dane Pike Wells And Pump	—	3	323
125	C. Cruse Drilling	—	3	301
126	Hacker's Pump Service	—	3	51
127	Collum Drilling Company	—	3	37
128	Boart Longyear Company	—	2	172
129	Rottman Drilling Co.	—	2	1,331
130	James E Wright, JR	—	2	328
131	Lynch L O Well Drilling And Supply	—	2	213
132	Corrosion Technology Inc.	—	2	169
133	Roscoe Moss Company	—	2	130
134	Julian Pump	—	2	74
135	Errol A Smith Drilling	—	2	37
136	North American Drilling Company	—	1	692
137	Jim Mcclain Wells	—	1	768
138	Clearwater Drilling	—	1	351
139	Desert Water Drilling Company	—	1	279
140	Precision Sampling Inc.	—	1	234
141	Mccalla Bros Pump And Drilling Co.	—	1	229
142	Redfeairn R L Drilling	—	1	195
143	Kirkland Well Service	—	1	184
144	Scott Xxx PC Exploration Inc.	—	1	154
145	Dyna Drill International Inc.	—	1	115
146	Stang Hydronics Inc.	—	1	56
147	Bill Julian Pump	—	1	55
148	Errin A Smith Drilling	—	1	54
149	Bailey Drilling & Pump Inc.	—	1	53
150	ED Owens & Son Drilling Co.	—	1	48
151	Waterwell Plus	—	1	27

Ranked by wells drilled in San Diego 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 San Diego County?

Stehly Brothers Drilling Inc. has drilled the most San Diego County wells in the recent record — 511 since 2016, 1,539 in the county all-time.

How many well drilling companies work in San Diego County?

151 companies in the DWR record have drilled wells in San Diego County; 39 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 San Diego County?

The median drilled depth in San Diego County is 305 ft, based on 25,782 recorded wells. Depths, water levels, and yields are on the San Diego County wells page.

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

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