Best well drillers in King County, Washington

Not a pay-to-play list: these are the 140 drilling companies with wells on record in King County, ranked by wells actually drilled here — 4,553 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.

140companies on record

46active since 2022

4,553wells in county record

#	Company	In King Co. since 2016	All-time in county	Statewide
1	Pierce Kiltoff	134	153	281
2	Rodney Gilseth JR	117	118	183
3	Mark Wiese	114	156	1,760
4	Chris Gregory	71	73	180
5	Michael Cyrier	69	146	1,083
6	Justin Bevins	53	54	56
7	Aaron Ocheltree	49	52	82
8	Gerald Gibson	37	37	98
9	Matthew Call	34	43	250
10	Jacob Hansen	25	26	146
11	Gray Rich	25	25	262
12	Joshua Koepp	23	44	1,327
13	Paul Anderson	21	38	1,384
14	Brannon Hopke	18	120	1,852
15	Rogeray Phythian	17	29	2,809
16	Bradley Johnson	15	912	975
17	Ryan Harris	12	14	117
18	Gary Maze	10	10	209
19	Elijah Rutledge	10	10	54
20	Chad Gregory	9	63	242
21	T L Cannon	8	254	258
22	Ryan Wilhonen	8	47	838
23	Nicolas Sample	7	12	543
24	James Kiltoff	4	104	393
25	Ralph Riggles	4	47	1,881
26	Mike Herman	4	10	34
27	Brent Barker	4	9	249
28	Richard Miller	4	6	62
29	Daniel Carpenter	4	4	533
30	Wade Iversen	3	15	57
31	Dave Charon	3	13	79
32	Darrell Feavel	3	5	226
33	Self Self	3	3	216
34	John Arfman	2	78	725
35	E Himebaugh	2	13	508
36	Billy Dodge	2	10	90
37	Trent Burrell	2	2	27
38	Charles Smith	1	59	339
39	Robert Carper	1	14	51
40	Lance Sabey	1	1	168
41	Lawrence Johnson	—	360	381
42	Richard Deremer II	—	147	217
43	Kyle Schaeffer	—	91	562
44	Ronald Bornmann	—	90	763
45	Alan Morek	—	78	115
46	Lawrence Gosling	—	69	374
47	Jan Buraas	—	61	65
48	Michael Colbert	—	54	142
49	Jay Graham	—	51	51
50	Thomas Craney	—	47	296
51	Roger Oelke	—	44	244
52	David Deremer	—	42	614
53	Curtis Isaacson	—	37	306
54	Shane Averette	—	34	452
55	Earl Hilliker	—	34	445
56	Randall Holt	—	29	162
57	Trent Smith	—	28	29
58	Matt Graham	—	26	26
59	Kevin Mckenna	—	24	256
60	Ronald Jones	—	23	323
61	Brett Phythian	—	19	3,428
62	Roy Smith JR	—	18	251
63	Francis Tanner	—	17	35
64	Terry Burns	—	16	229
65	Jack Richardson	—	16	121
66	William Halbert	—	16	86
67	Lynn Bartholomew	—	14	410
68	Michael Mcadam	—	13	120
69	James ST Pierre	—	13	75
70	Jason Waldrop	—	12	188
71	Dean Hayes SR	—	12	105
72	Wayne Guy	—	12	28
73	Norman Ferrell	—	11	43
74	Curtis Gosling	—	10	59
75	Wayne Logsdon	—	9	189
76	Carl Bauer	—	9	60
77	Steven Staley	—	8	112
78	Scott Kiltoff	—	8	29
79	Steven Saenz	—	6	67
80	Stevan Butler	—	6	30
81	Randy Harris	—	5	184
82	George Burt	—	5	43
83	Tom Banta	—	5	29
84	Stephen Schneider	—	4	90
85	Brandon Hicks	—	4	337
86	Roger Gardner	—	4	151
87	Theodore Rieckers	—	4	145
88	Jason Solvey	—	4	118
89	Richard Braun	—	4	39
90	James Niederkorn	—	4	33
91	Gordon Hanks	—	3	401
92	Steve Gilbert	—	3	60
93	Thomas Dannison JR	—	3	26
94	David Rutledge	—	2	1,174
95	Mark Sawyer	—	2	331
96	Eugene Hitt	—	2	410
97	Dwane Knapp	—	2	472
98	Jon Ricard JR	—	2	1,527
99	James Wiley	—	2	550
100	Joseph Nunes	—	2	374
101	Albin Butler	—	2	327
102	Jason Boyd	—	2	48
103	Anthony Kraut	—	2	36
104	Patrick Miller	—	2	30
105	Christopher Jones	—	1	3,742
106	Robert Laymon	—	1	965
107	Michael Robinson	—	1	727
108	Terry Gavin	—	1	1,227
109	Clayton Pitts	—	1	436
110	Donald Lofall	—	1	290
111	Lyle Pitts	—	1	341
112	Eric Hansen	—	1	55
113	Audie Mccurdy	—	1	818
114	Craig Gresham	—	1	1,037
115	Steven Mills	—	1	719
116	Gerlof Boonstra	—	1	636
117	Michael Learn	—	1	463
118	Daniel Oconnell	—	1	458
119	Nicholas Ernst	—	1	429
120	Rick Swanson	—	1	409
121	William Munich	—	1	388
122	Dennis Faber	—	1	343
123	Gregory Halvorson	—	1	319
124	Mark Nelson	—	1	279
125	Wesley Glessner	—	1	206
126	NA Unknown	—	1	139
127	Don Stein	—	1	130
128	Kenneth Engle	—	1	112
129	Roger Harrison	—	1	109
130	Robert Dehle	—	1	80
131	Ronald Wiley	—	1	77
132	Larry Gustin	—	1	67
133	James Stair	—	1	57
134	Zon Axelsen	—	1	41
135	Richard Bergquist	—	1	39
136	Simon Butler	—	1	35
137	Tony Fehrenbach	—	1	33
138	Bruce Predmore	—	1	27
139	Charles Whisnant	—	1	26
140	Stephen Speelmon	—	1	25

Ranked by wells drilled in King 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 King County?

Pierce Kiltoff has drilled the most King County wells in the recent record — 134 since 2016, 153 in the county all-time.

How many well drilling companies work in King County?

140 companies in the Ecology record have drilled wells in King County; 46 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 King County?

The median drilled depth in King County is 142 ft, based on 4,737 recorded wells. Depths, water levels, and yields are on the King County wells page.

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

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