Montana Well Data field records · 2026 survey

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Best well drillers in Ravalli County, Montana

Not a pay-to-play list: these are the 104 drilling companies with wells on record in Ravalli County, ranked by wells actually drilled here — 19,729 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.

104companies on record
38active since 2022
19,729wells in county record
#CompanyIn Ravalli Co. since 2016All-time in countyStatewide
1 Eslinger Drilling & Pump Service 1,100 4,353 4,560
2 Aqwa Drilling LLC 765 1,791 1,897
3 Eagle Drilling And Pump Service 338 726 830
4 Western Montana Drilling Co. 186 186 721
5 Jeromes Drilling Co. 175 991 6,463
6 Ravalli Drilling Inc. 167 4,481 4,911
7 S & S Well Drilling, LLC 103 103 118
8 Camp Well Drilling And Pump Service 92 111 573
9 AK Drilling Inc. 74 96 1,288
10 Camp Well Drilling & Pump Supply 49 503 855
11 Coldwater Drilling And Pumps 23 23 575
12 Okeefe Drilling Co. 11 67 8,849
13 Western Drilling Co. 11 11 229
14 West Central Environmental Consultants 4 4 291
15 Aqua Drilling And Pump 3 10 40
16 Western Water Wells 2 2 1,146
17 Heimark Drilling 2 2 30
18 Rainbow Well Drilling 1 23 204
19 Callison Well Drilling 1 11 693
20 A-10 Drilling 1 1 2,343
21 Ace Drilling 1 1 939
22 Holt Services Inc. 1 1 50
23 Martin Well Drilling 1,040 1,451
24 Preston Drilling 981 1,000
25 Valley Drilling Co. 904 1,108
26 Advanced Well Drilling Inc. 729 811
27 Anderson Drilling 378 1,057
28 Carlson Drilling 348 470
29 Corvallis Well Drilling And Pump Co. 265 266
30 Jacobson Drilling 195 606
31 Camp Well Drilling 143 3,803
32 Jerome And Okeefe Drilling Co. 137 1,032
33 Williams Well Drilling 104 785
34 Preston 104 243
35 Sander Drilling Company 103 105
36 Smith Drilling 90 120
37 MT Dept OF Transportation 85 5,869
38 Liberty Drilling & Pump Co. 61 2,646
39 Trimble Well Drilling 52 52
40 Pines Drilling 44 45
41 Hudson Brothers 42 51
42 Ray 36 42
43 Carlson 33 115
44 Quigley 33 36
45 Water Well Contractors Inc. 33 34
46 D And D Drilling 26 34
47 C.k.c. Drilling 25 47
48 Willison Well Drilling 23 25
49 Boland Drilling 21 1,807
50 Corvallis 21 25
51 Chambers Drilling Company 11 2,237
52 Aaqua Drilling Inc. 9 5,240
53 Hydrometrics Inc. 9 194
54 Hudson 9 342
55 Montana Tech 9 43
56 Kane Well Drilling & Pump Service 8 1,551
57 Ckc Drilling 8 42
58 Pickett 7 347
59 Blackfoot Well Drilling & Pump Service Inc. 6 450
60 Ckc 5 482
61 Van Dyken Drilling Inc. 4 5,564
62 Lindsay Drilling Co. Inc. 4 6,738
63 Water & Environmental Technologies 4 110
64 Maxim Technologies 4 491
65 Western 4 202
66 Wroble 4 101
67 Phil Lewis Drilling 4 85
68 Magstadt 4 80
69 Northern Pacific Railway 4 63
70 Ulrich 4 35
71 Diamond M Drilling Inc. 3 782
72 Aquasource Inc. LLC 3 497
73 Environmental West 3 143
74 Montana Highway Dept. 3 370
75 Krass Drilling & Pump Service 3 263
76 Pickens 3 90
77 Callison Drilling Inc. 3 62
78 Raging Wolf Drilling 3 57
79 Jennings Drilling Co. 2 248
80 Mahurin Drilling 2 101
81 Cni 2 39
82 Lochner Drilling 2 36
83 Geotex 2 31
84 Billmayer Drilling 1 3,225
85 Allwest Drilling Inc. 1 1,694
86 Sharp Drilling Inc. 1 772
87 Birchell Drilling 1 1,046
88 Petrie Pump & Drilling 1 621
89 Corveau Drilling 1 141
90 Western Water Works Inc. 1 1,205
91 Gordon Drilling Inc. 1 1,128
92 Castlio Drilling 1 645
93 Montana 1 176
94 Farrell 1 166
95 Well Done Drilling & Pump Co. 1 152
96 Kornec 1 135
97 Simpson 1 124
98 Aqua Source 1 117
99 Bailey And Okeefe Drilling Co. 1 82
100 Krause 1 70
101 Hand 1 63
102 Pinnow Drilling 1 62
103 MT Dept OF Highways 1 55
104 Jones Welding & Drilling Co. 1 50

Ranked by wells drilled in Ravalli 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 Ravalli County?

Eslinger Drilling & Pump Service has drilled the most Ravalli County wells in the recent record — 1,100 since 2016, 4,353 in the county all-time.

How many well drilling companies work in Ravalli County?

104 companies in the GWIC record have drilled wells in Ravalli County; 38 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 Ravalli County?

The median drilled depth in Ravalli County is 75 ft, based on 21,925 recorded wells. Depths, water levels, and yields are on the Ravalli County wells page.

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

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