Saltwater Disposal Wells in Karnes County, Texas
Karnes County has 52 disposal-related permits on record with 24 injection wells on the RRC schedule, 24 of them active. SWD capacity here is led by PILOT WATER SOLUTIONS SWD LLC, EVX OPERATING LLC, CROSSTEX ENVIRONMENTAL STX LLCamong 34 operators with disposal filings in the county.
Active SWD wells, top disposal operators, and the latest permits are below, from RRC permit and wellbore scheduling data (most recent filing 2024-12-09).
SWD Permits
52
Last 12mo
0
Permit Operators
34
Injection Wells
24
On Schedule
24
Permitted Capacity
0.71MMbbl/d
W-14 Disposal
0.56MMbbl/d
Deep Interval (8k+ ft)
3%
Injected (12mo)
41MMbbl
vs Prior Year
-47%
Capacity from active RRC UIC permits; injected volumes from operator H-10 filings.
Earthquakes M2+ (12mo)
60
vs Prior Year
-38
M3+ (12mo)
7
Max Magnitude (12mo)
M3.5
Seismicity in the Karnes County area from the TexNet catalog · latest M3+: M3.4 20 km WNW of Pawnee, Texas (2026-04-08) · sustained clusters can trigger RRC seismic response areas that curtail deep disposal. Full earthquake history →
Disposal Permit Activity
Injected Volumes (MMbbl/month, operator H-10 filings)
Disposal Operators (actual injected vs permitted, active UIC permits)
| OPERATOR | INJECTED 12MO (BBL) | PERMITTED BBL/D | WELLS |
|---|---|---|---|
| PILOT WATER SOLUTIONS SWD LLC | 13,939,124 | 143,000 | 6 |
| EVX OPER LLC | 10,773,889 | 122,500 | 6 |
| CROSSTEX ENVIRONMENTAL STX, LLC | 4,927,396 | 155,000 | 5 |
| RHINO OPER CO, LLC | 3,702,646 | 25,000 | 1 |
| CWR MANAGMENT LLC | 2,698,891 | 85,000 | 4 |
| MARATHON OIL EF LLC | 1,472,356 | 25,000 | 1 |
| ADVANTEK WASTE MGMT SERVICES LLC | 1,170,808 | 45,000 | 2 |
| ESTATE OF JAMES L. NELSON | 1,152,727 | 12,500 | 1 |
| SELECT WATER SOLUTIONS, LLC | 567,950 | 20,000 | 1 |
| US ECOLOGY KARNES CNTY DISP, LLC | 292,248 | 15,000 | 1 |
SWD Operators (by injection wells operated)
Top Permit Filers (disposal-related permits)
Injection Wells (most recently completed)
| API | LEASE | OPERATOR | DEPTH | COMPLETED | SCHED |
|---|---|---|---|---|---|
| 42-255-38209 | REED SWD | ADVANTEK WASTE MGMT SERVICES LLC | -- | 2026-01-22 | Y |
| 42-255-31906 | KARNES SWD | CROSSTEX ENVIRONMENTAL STX LLC | -- | 2025-10-26 | Y |
| 42-255-38074 | RSG KARNES SWD | US ECOLOGY KARNES CNTY DISP LLC | -- | 2024-08-28 | Y |
| 42-255-32564 | NOR-TEX SWD | CROSSTEX ENVIRONMENTAL STX LLC | -- | 2023-10-31 | Y |
| 42-255-32094 | LAMZA SWD | CWR MANAGEMENT LLC | -- | 2023-04-18 | Y |
| 42-255-32506 | GRANT | EVX OPERATING LLC | -- | 2021-08-28 | Y |
| 42-255-32676 | TE KENEDY SWD | PILOT WATER SOLUTIONS SWD LLC | -- | 2021-04-10 | Y |
| 42-255-36720 | HENNING | PILOT WATER SOLUTIONS SWD LLC | -- | 2020-02-01 | Y |
| 42-255-32376 | RUNGE SWD | EVX OPERATING LLC | -- | 2019-01-24 | Y |
| 42-255-36161 | KARNES SWD | ESTATE OF JAMES L. NELSON | -- | 2018-12-31 | Y |
| 42-255-35341 | J. P. WRIGHT | EVX OPERATING LLC | -- | 2017-04-25 | Y |
| 42-255-31274 | KERLICK | EVX OPERATING LLC | -- | 2016-08-05 | Y |
| 42-255-33612 | REED SWD | ADVANTEK WASTE MGMT SERVICES LLC | -- | 2015-01-07 | Y |
| 42-255-32604 | CAT-KENEDY SWD | MARATHON OIL EF LLC | -- | 2014-10-15 | Y |
| 42-255-32854 | RHINO-KENEDY 72 SWD | RHINO OPERATING COMPANY LLC | -- | 2014-08-10 | Y |
Recent Disposal Permits
| PERMIT | OPERATOR | LEASE | TYPE | ISSUED |
|---|---|---|---|---|
| 904477 | ADVANTEK WASTE MGMT SERVICES LLC | REED SWD | DRILL | 2024-12-09 |
| 899598 | US ECOLOGY KARNES CNTY DISP, LLC | RSG KARNES SWD | DRILL | 2024-05-13 |
| 871274 | BPX MIDSTREAM LLC | KARNES SWD | DRILL | 2021-10-07 |
| 858301 | MARATHON OIL EF LLC | SSL SWD | DRILL | 2019-10-28 |
| 850148 | HIGH ROLLER WELLS, L.L.C. | BLUE SWD | DRILL | 2019-02-22 |
| 849140 | HIGH ROLLER WELLS, L.L.C. | WHITE SWD | DRILL | 2019-01-25 |
| 845169 | NELSON, JAMES L. | KARNES SWD | DRILL | 2018-09-28 |
| 802054 | MARATHON OIL EF LLC | SOUTH SUGARLOAF SWD | DRILL | 2014-12-22 |
| 802054 | MARATHON OIL EF LLC | SOUTH SUGARLOAF SWD | DRILL | 2014-12-22 |
| 795093 | ENAQUA SOLUTIONS, LLC | CAT-KENEDY SWD | RECOMP | 2014-09-10 |
| 793240 | HIGH ROLLER WELLS, L.L.C. | FM 99 SWD | DRILL | 2014-08-27 |
| 782977 | SABLE ENVIRONMENTAL, LLC | COY CITY SWD | DRILL | 2014-04-17 |
See all drilling activity in Karnes County or statewide produced water & disposal activity.