Best well drillers in Mason County, Washington

Not a pay-to-play list: these are the 117 drilling companies with wells on record in Mason County, ranked by wells actually drilled here — 5,417 logged wells in Washington State Department of Ecology well construction reports (records as of 2026-07-28). Every number links back to the public record.

117companies on record

39active since 2022

5,417wells in county record

#	Company	In Mason Co. since 2016	All-time in county	Statewide
1	Joshua Koepp	361	520	1,327
2	Rogeray Phythian	239	1,046	2,809
3	Emily Davis	136	138	236
4	Dwane Knapp	96	388	472
5	Christopher Jones	66	72	3,742
6	Robert Laymon	57	70	965
7	Cory Johnson	54	54	112
8	Clayton Pitts	52	160	436
9	Michael Davis	42	256	306
10	James Johnson	36	36	68
11	Mark Wiese	25	26	1,760
12	Daniel Carpenter	21	39	533
13	Nicolas Sample	18	50	543
14	Madaline Trotter	18	18	53
15	Michael Cyrier	10	14	1,083
16	Joshua Stone	10	10	124
17	Lyle Pitts	6	130	341
18	Jack Grande	6	121	154
19	Eric Brasher	6	6	140
20	Donald Johnston	6	6	67
21	Daniel King	5	6	780
22	Jacob Hansen	5	5	146
23	Darrell Feavel	3	3	226
24	Marvin Fengel	2	6	132
25	Matthew Henningsen	1	119	148
26	Stanley Davis	1	38	51
27	Terry Gavin	1	26	1,227
28	Albert Smith	1	3	361
29	Billy Dodge	1	2	90
30	John Brazeau	1	1	180
31	Matthew Call	1	1	250
32	Raymond Bauer	1	1	397
33	Brett Phythian	1	1	3,428
34	Jack Wilson	1	1	132
35	Christopher Mcghee	1	1	1,521
36	Trent Burrell	1	1	27
37	Gray Rich	1	1	262
38	Randy Harris	1	1	184
39	David Deremer	—	215	614
40	Nicholas Ernst	—	199	429
41	ED Nelson	—	196	380
42	Jon Knapp	—	193	343
43	William Lee	—	175	190
44	Mark Nelson	—	169	279
45	Ronnie King	—	166	213
46	Brandon Hicks	—	88	337
47	Michael Mitchell	—	67	81
48	James Wiley	—	59	550
49	Lanny Carpenter	—	51	248
50	John Sullivan	—	34	267
51	Rylan Broughton	—	34	38
52	Brigham Ward	—	30	264
53	Jeremy Palin	—	30	114
54	Craig Gresham	—	25	1,037
55	William Maberry SR	—	21	195
56	Corbie Chance II	—	20	38
57	Tim Maxey	—	19	760
58	Corbie Chance	—	18	103
59	Wesley Glessner	—	15	206
60	Shawn Beebe	—	15	48
61	Edwin King	—	11	334
62	Chris Town	—	10	318
63	Shane Averette	—	9	452
64	Geoff Kelstrup	—	9	44
65	Rick Swanson	—	8	409
66	Larry Olsen	—	8	203
67	Matt Olsen	—	8	186
68	James Trepanier	—	8	145
69	Self Self	—	7	216
70	Edwin Brown	—	7	40
71	Glen Hicks	—	7	33
72	Donald Duckworth	—	6	235
73	John Arfman	—	5	725
74	Earl Hilliker	—	5	445
75	NA Unknown	—	5	139
76	Ronald Wiley	—	5	77
77	Jeff Gavin	—	5	65
78	Scott Woolley	—	5	51
79	Ralph Riggles	—	4	1,881
80	Charles Smith	—	4	339
81	Ronald Jones	—	4	323
82	Thomas Needham	—	4	132
83	William Neal Iii	—	4	27
84	Ronald Bornmann	—	3	763
85	Lynn Bartholomew	—	3	410
86	Kelly Edwards	—	3	207
87	Keith Kincy	—	3	60
88	Kevin Beavers	—	3	30
89	Forrest Chance	—	3	29
90	Dave Charon	—	2	79
91	Roger Harrison	—	2	109
92	William Dover	—	2	86
93	Larry Gustin	—	2	67
94	David Scoggins	—	2	55
95	Robert Carper	—	2	51
96	Roy Miller	—	2	30
97	Richard Debler	—	1	522
98	Donald Lofall	—	1	290
99	Wade Iversen	—	1	57
100	Reazo Redinger Iii	—	1	1,114
101	Daniel Rayton	—	1	665
102	Lawrence Johnson	—	1	381
103	Thomas Craney	—	1	296
104	Richard Deremer II	—	1	217
105	Ronald Duckworth	—	1	168
106	Randall Holt	—	1	162
107	Charles Lantau	—	1	150
108	Tim Uhlenkott	—	1	146
109	Theodore Rieckers	—	1	145
110	George Clovis	—	1	140
111	Gerald Bluhm	—	1	134
112	James Stair	—	1	57
113	Rick Wanzer	—	1	51
114	ED Moerke	—	1	50
115	Kenneth Blackman	—	1	50
116	Wallace Robinson	—	1	29
117	Bruce Lewis	—	1	26

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

Joshua Koepp has drilled the most Mason County wells in the recent record — 361 since 2016, 520 in the county all-time.

How many well drilling companies work in Mason County?

117 companies in the Ecology record have drilled wells in Mason County; 39 of them have drilled somewhere in Washington since 2022. Smaller operators below the record threshold may also serve the area.

How deep is a typical well in Mason County?

The median drilled depth in Mason County is 129 ft, based on 5,583 recorded wells. Depths, water levels, and yields are on the Mason County wells page.

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

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