Best well drillers in Allegheny County, Pennsylvania

Not a pay-to-play list: these are the 109 drilling companies with wells on record in Allegheny County, ranked by wells actually drilled here — 6,409 logged wells in the Pennsylvania Groundwater Information System (PaGWIS), published by the PA Department of Conservation and Natural Resources (records as of 2026-10-12). Every number links back to the public record.

109companies on record

35active since 2022

6,409wells in county record

#	Company	In Allegheny Co. since 2016	All-time in county	Statewide
1	Chatfield Drilling, Inc.	348	350	3,589
2	Geo-Environmental Drilling Co. Inc.	322	1,169	3,228
3	Kodiak Field Services	148	365	1,705
4	Dillan Well Drilling Inc.	134	246	4,417
5	Terra Testing, Inc.	132	1,256	4,532
6	Allprobe Environmental Inc.	117	196	627
7	Odyssey Environmental Services, Inc.	105	241	7,584
8	Driller H.a.d. Inc.	83	155	465
9	Cribbs & Associates, LLC	83	138	764
10	Envirocore, Inc.	63	63	79
11	Parratt-Wolff Inc.	60	77	3,500
12	Meinert Well Drilling Inc.	46	251	1,882
13	Eichelbergers Inc.	44	210	37,074
14	Haefner Drilling, LLC	31	106	709
15	Allied Well Drilling	29	29	2,213
16	HD Sonic Drilling, Inc.	23	122	728
17	Marti Cascade	20	22	342
18	Active Environmental Technologies, Inc.	18	18	206
19	Bjaam Environmental Inc.	18	18	42
20	Dms Environmental Services, LLC	16	19	670
21	William T Martin Well Drilling Inc.	10	55	1,108
22	Letterle & Associates, Inc.	9	83	655
23	C. Book & Proch, Inc.	6	12	3,362
24	Toy Drilling Co. Inc.	4	4	1,343
25	Sperry Drilling Inc.--Judith A. Bird	3	5	1,740
26	Pennsylvania Drilling Company	2	68	160
27	G S Fleese Drillin	2	3	248
28	Ohio Drilling Company	1	15	30
29	Cursi Drilling Company, Inc.	1	4	53
30	Jobe Drilling Co. Inc.	1	3	1,417
31	Natcher Drilling Inc.	1	1	2,539
32	Enviroprobe Service, Inc.	1	1	183
33	Mark Rogish Well Drilling	1	1	131
34	Ferguson Brothers	—	78	151
35	Bernard Swogger Drilling	—	77	429
36	Subsurface Inc.	—	75	150
37	Miller Drilling	—	71	189
38	R J Nock & Son	—	60	91
39	Thomas Well Drilling	—	52	133
40	Reeg & Klein Bros	—	51	334
41	S & ME Inc.	—	51	51
42	L G Hetager Drilling Inc.	—	46	600
43	Marts Brothers Drilling Inc.	—	41	122
44	Handex Consulting & Remediation, LLC	—	40	575
45	Jim Toward Drilling	—	33	233
46	James W Mccrory	—	30	44
47	Klingensmith Drilling	—	27	140
48	B. L. Myers Bros OF MD,LLC	—	26	12,524
49	Moody And Associates, Inc.	—	21	1,117
50	Mccormick Drilling Co.	—	20	373
51	Edwin Cunningham	—	20	28
52	E W Ferguson	—	18	25
53	Andrew Beikert	—	17	261
54	Frontz Drilling Inc.	—	17	199
55	Roy L Smith	—	17	198
56	R & R Associates Inc.	—	13	67
57	Test Boring Services, Inc.	—	13	50
58	Vista Environmental, Inc.	—	12	41
59	Watt Drilling	—	11	463
60	Mccoy Brothers Well Drilling	—	11	148
61	Richard Frederick	—	11	89
62	Mid-Eastern Geotech Inc.	—	10	38
63	Charles Double J Drilling OF W. Va., Inc.	—	9	42
64	Letterle Leasing, LLC	—	8	97
65	Mountain Research LLC	—	7	1,243
66	William J Mccormick	—	7	364
67	Brown Well Drilling	—	7	314
68	Snyder Robert	—	7	255
69	Deitzer Drilling	—	7	61
70	Nimpfer Drilling	—	7	50
71	Negley's Well Drilling, LLC	—	6	9,098
72	Richard E Mccormick	—	6	229
73	Thomas Keyes, Inc.	—	3	5,253
74	Shellhammer Bros	—	3	250
75	Arthur Reinheimer Layne Christensen Company	—	3	225
76	Johnson's Drilling	—	3	82
77	Puskarich Drilling Company	—	3	58
78	Lloyd Smith Company Inc.	—	3	52
79	Robert Sadowski Well Drilling	—	3	52
80	Geomechanics, Inc.	—	3	39
81	Summit Drilling LLC	—	2	1,492
82	Lenhart Well Drilling, Inc.	—	2	1,545
83	Water Well Drillers Licensing--Topo Geo	—	2	732
84	W. E. Glunt Drilling	—	2	614
85	Somerset Well Drilling	—	2	492
86	Carl Krut & Sons	—	2	343
87	Mac Flow Water Well Systems Inc.	—	2	148
88	Spiering Drilling	—	2	91
89	Michael Spreng	—	2	74
90	W F Kerr	—	2	46
91	Myers Brothers Drilling Contr.,Inc.	—	1	33,477
92	Harry E Davis & Sons Inc.	—	1	744
93	Tom Book And Book Well Drilling	—	1	524
94	Mckay & Gould Drilling, Inc.	—	1	362
95	George L Davis & Sons	—	1	337
96	J Reho & Sons, Inc.	—	1	324
97	Lester W Kocher	—	1	278
98	Jim Bracken Well Drilling	—	1	193
99	Graham Pump & Backhoe Service	—	1	180
100	Penners Well Drilling	—	1	180
101	Pioneer Drlg & Pump Co.	—	1	169
102	William H Zerbe	—	1	162
103	Wright's Well Service	—	1	134
104	R Parmenter Well Drilling	—	1	131
105	Harold E Raymond	—	1	83
106	William Stothoff Co. Inc.	—	1	70
107	Jeffrey L Rindfuss	—	1	51
108	William O Young	—	1	37
109	Jones Drilling And Pump Co.	—	1	29

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

Chatfield Drilling, Inc. has drilled the most Allegheny County wells in the recent record — 348 since 2016, 350 in the county all-time.

How many well drilling companies work in Allegheny County?

109 companies in the PaGWIS record have drilled wells in Allegheny County; 35 of them have drilled somewhere in Pennsylvania since 2022. Smaller operators below the record threshold may also serve the area.

How deep is a typical well in Allegheny County?

The median drilled depth in Allegheny County is 66 ft, based on 5,250 recorded wells. Depths, water levels, and yields are on the Allegheny County wells page.

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

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