Best well drillers in Cascade County, Montana

Not a pay-to-play list: these are the 117 drilling companies with wells on record in Cascade County, ranked by wells actually drilled here — 6,276 logged wells in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC) (records as of 2026-07-27). Every number links back to the public record.

117companies on record

40active since 2022

6,276wells in county record

#	Company	In Cascade Co. since 2016	All-time in county	Statewide
1	Aquasource Drilling LLC	378	420	1,071
2	Boland Drilling	272	1,183	1,807
3	Aaaa Water Well Drilling Inc.	157	263	769
4	Cascade Drilling LP	112	112	716
5	MT Dept OF Transportation	83	209	5,869
6	Montana Salinity Control Association	71	147	2,583
7	Pat Byrne Drilling Inc.	70	413	440
8	Aquasource Inc. LLC	70	143	497
9	Western Water Wells	56	56	1,146
10	Vista Geoscience	52	52	52
11	HL Ventures LLC	36	36	193
12	406 Water Wells, LLC	34	34	182
13	Montana Highway Dept.	32	33	370
14	Okeefe Drilling Co.	11	105	8,849
15	Thomas, Dean, And Hoskins, Inc.	9	21	74
16	West Central Environmental Consultants	9	9	291
17	Corveau Drilling	7	79	141
18	SK Geotechnical Co.	5	6	434
19	Clayton Larson	5	5	111
20	H & L Drilling Inc.	4	27	7,604
21	MT Poverty Water Well Drilling	4	17	408
22	Lindsay Drilling Co. Inc.	3	36	6,738
23	A-10 Drilling	3	14	2,343
24	Olympus Technical Services	3	3	175
25	Haz Tech Drilling Inc.	2	4	2,135
26	Central Drilling Inc.	1	5	1,101
27	Rock Creek Drilling Inc.	1	2	977
28	Aaqua Drilling Inc.	1	1	5,240
29	Vidic Drilling Inc.	1	1	1,062
30	Byrne	—	1,109	1,232
31	Poverty Drilling	—	451	992
32	Rafferty	—	157	193
33	Franklin	—	149	162
34	A & G Drilling Inc.	—	123	173
35	Sure Water Drilling	—	61	125
36	Mendenhall Drilling	—	57	70
37	Jennings Drilling Co.	—	55	248
38	Maxim Technologies	—	45	491
39	Treasure State Drilling	—	43	1,444
40	Nicka Well Drilling	—	42	160
41	Delta	—	41	89
42	Gordon Drilling Inc.	—	34	1,128
43	Murrays Well Service	—	34	376
44	Red Tiger Drilling	—	33	3,139
45	Brown	—	28	247
46	Aqua Source	—	28	117
47	Anderson Drilling	—	23	1,057
48	Pickett	—	22	347
49	Taylor	—	22	88
50	Hansen Environmental Drilling	—	18	1,195
51	Kornec	—	18	135
52	Thatcher Drilling Co.	—	17	362
53	Whitaker Well Drilling	—	17	72
54	Chen-Northern, Inc.	—	12	205
55	Sommer	—	10	131
56	Bailey And Okeefe Drilling Co.	—	10	82
57	PC Exploration	—	10	47
58	Debuff Drilling	—	9	443
59	Lloyd	—	8	130
60	Boart Longyear Company	—	8	96
61	Mahlum Drilling	—	7	142
62	Hand	—	7	63
63	Delta Engineering P.c.	—	7	34
64	Billings	—	6	367
65	SB RL	—	6	63
66	Bush Drilling	—	6	61
67	MT Department OF Transportation	—	6	29
68	Sharp Drilling Inc.	—	5	772
69	MT Bureau OF Mines & Geology	—	5	620
70	Martin Well Drilling	—	5	1,451
71	Nelson	—	5	53
72	Cni	—	5	39
73	Erickson Drilling & Pump Co.	—	4	803
74	Sudan Drilling	—	4	1,984
75	Schmidt	—	4	114
76	Atlatl Inc.	—	4	86
77	P & S	—	4	42
78	Hayes Drilling	—	3	1,920
79	Jerome And Okeefe Drilling Co.	—	3	1,032
80	Starz	—	3	71
81	Raging Wolf Drilling	—	3	57
82	Chris Boland Drilling Co.	—	3	37
83	Liberty Drilling & Pump Co.	—	2	2,646
84	Johnson	—	2	658
85	Esd Inc.	—	2	284
86	Terracon	—	2	122
87	M.t.	—	2	116
88	Munson Drilling Co.	—	2	56
89	Bridger Drilling Inc.	—	1	2,382
90	Douglas Drilling	—	1	1,060
91	Singley Drilling	—	1	835
92	Mayes Drilling Inc.	—	1	1,139
93	HI-Line Drilling Inc.	—	1	1,575
94	H & H Drilling	—	1	1,083
95	Water & Environmental Technologies	—	1	110
96	Hydrometrics Inc.	—	1	194
97	Haggerty Drilling	—	1	3,618
98	Hillman Drilling	—	1	2,321
99	Brazill Drilling	—	1	674
100	Dynamite Drilling	—	1	631
101	Hulbert	—	1	558
102	Dept OF Transportation	—	1	527
103	A.f. Welch Driling	—	1	425
104	Davis Drilling	—	1	385
105	Briggs Drilling	—	1	381
106	Joe Liss Drilling	—	1	313
107	Montana	—	1	176
108	Porter Drilling	—	1	126
109	Grizzly Drilling	—	1	81
110	P & S Drilling	—	1	49
111	Aqua Drilling And Pump	—	1	40
112	Department OF Transportation	—	1	35
113	Amec Geomatrix Inc.	—	1	31
114	Water System Drilling Inc.	—	1	30
115	A & M	—	1	30
116	M.t. Drilling	—	1	29
117	Hunter	—	1	26

Ranked by wells drilled in Cascade County since 2016 (then all-time), from the full GWIC 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 Cascade County?

Aquasource Drilling LLC has drilled the most Cascade County wells in the recent record — 378 since 2016, 420 in the county all-time.

How many well drilling companies work in Cascade County?

117 companies in the GWIC record have drilled wells in Cascade County; 40 of them have drilled somewhere in Montana since 2022. Smaller operators below the record threshold may also serve the area.

How deep is a typical well in Cascade County?

The median drilled depth in Cascade County is 110 ft, based on 7,161 recorded wells. Depths, water levels, and yields are on the Cascade County wells page.

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

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