Petrora

WATER · MCMULLEN COUNTY

Produced water and disposal in McMullen County

Every injection and disposal permit in the county, what each well is permitted to take, what its operator reported, and who is reporting daily. Earthquakes in the area →

McMullen County has 52 active injection and disposal wells, 44 of them permitted for disposal, with 421,360 barrels a day of permitted capacity.

Operators reported 36 million barrels injected on H-10 filings in the twelve months to September 2025, up 14% on the year before, about 24% of what the permits allow.

Evx Operating LLC is the largest injector in the county, with 12 million barrels reported across 4 active wells.

37 M2+ earthquakes were located in the county's area over the last two years, the largest M2.8.

52
active injection wells, 44 for disposal
421K
bbl/d permitted capacity
36.2M
bbl reported, H-10 year to Sep 2025 +14%
24%
of permitted capacity used
246
UIC permits on file, all time

Reported injection, by month

H-10 FILINGS · TEN YEARS TO SEP 2025

Last 12 months 36,206,472 · prior 12 31,802,114(+14%)

02M4M2016201720182019202020212022202320242025

Who injects here

Operators with active permits in the county, by reported H-10 volume over the settled year.

OperatorReported, bblActive wellsCapacity bbl/d
Evx Operating LLC12.1M4105K
Crosstex Environmental STX, LLC10.1M482K
Rhino Operating Company, LLC5.32M125K
Saylee Services, LLC2.26M120K
Atlas Operating LLC1.7M940.3K
C&e Production, LLC1.67M125K
4020 SWD, LLC1.16M234K
Caribbean Energy LLC II789K13.5K
Rickaway Energy, Corp.373K23.75K
Varas Energy Operating Company,199K110K
Field Petroleum Corp.149K15K
Hawthorn Energy Partners, LLC142K1500
Wagner Oil Company102K12.5K
Bluebonnet Oil & Gas62.1K11.5K
Atkinson Operations LLC14.3K175
Columbus Energy, LLC13K25.2K
Eldon Oil Co.3.45K120
Los Hijos de Sanchez J LLC2.99K14K
Britanco, L.L.C.68012.5K
Caturus Energy, LLC—130K

Injection permits

246 UIC PERMITS · 52 ACTIVE · PAGE 3 OF 3

Active permits first, by reported volume, then canceled, plugged, and never-activated permits.

WellOperatorStatusPurposeReported, bblbbl/d permittedZone, ftPermitted
Ezzell Unit #H 36Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #H 38Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 7Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 8Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 10Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 13Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 16Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 18Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 19Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 23Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 25Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 27Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 29Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 30Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 35Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 53Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 55Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 57Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 60Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 61Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 63Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 65Paisano Minerals CompanyCanceledDisposal——1,500–15,007Nov 16, 1953
Ezzell Unit #M 69Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 71Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 72Paisano Minerals CompanyCanceledDisposal——1,500–15,007Nov 16, 1953
Ezzell Unit #M 73Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 75Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 77Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Ezzell Unit #M 83Paisano Minerals CompanyCanceledDisposal——1,500–1,507Nov 16, 1953
Jacob -S- #1B & E Prod. Co.CanceledEnhanced recovery————
Leonard Jacob Corp. #B 23Loma Oil CompanyPluggedEnhanced recovery————
Leonard Jacob Corp. #B 28Loma Oil CompanyPluggedEnhanced recovery————
Leonard Jacob Corp. #B 34Loma Oil CompanyPluggedEnhanced recovery————
Leonard Jacob Corp. #F 10Loma Oil CompanyPluggedEnhanced recovery————
Leonard Jacob Corp. #W 28Loma Oil CompanyPluggedEnhanced recovery————
Price, D. H., et Al #1Sun Expl. & Prod. Co.-CorpusCanceledDisposal——3,890—
Baker, Myla #9Arco Oil & Gas Co.CanceledDisposal————
Campbell, Myrtle E. #9Arco Oil & Gas Co.CanceledDisposal————
South Campana SWD O/A #2Texaco E & P Inc.CanceledDisposal————
Dilworth #12Hughes, Dan A. Company, L.P.CanceledEnhanced recovery——3,254–3,262Jul 10, 1998
Ezzell Unit #H 16Paisano Minerals CompanyCanceledEnhanced recovery———Nov 16, 1953
Ezzell Unit #H 18Paisano Minerals CompanyCanceledEnhanced recovery———Nov 16, 1953
Ezzell Unit #H 19Paisano Minerals CompanyCanceledEnhanced recovery———Nov 16, 1953
Ezzell Unit #M 20Paisano Minerals CompanyCanceledEnhanced recovery———Nov 16, 1953
Peeler SWD #1Pyote Water Systems II, LLCCanceledDisposal———Oct 26, 2012
Carver Unit #1HMurphy Expl. & Prod. Co. - USAInactiveEnhanced recovery——10,431–10,472May 19, 2020

Latest disposal drilling permits

W-1 drilling permits in the county tagged as produced-water disposal.

IssuedPermitOperatorLease / well
May 14, 2026915586Gulftex Energy, LLCLP SWD #1 31137684
Jan 27, 2026913086Evx Operating LLCMilestone SWD #2 31136918
Jan 8, 2025905026Kimmeridge Texas Gas, LLCEast McMullen SWD #1 31137575
Jan 9, 2019848362Evx Midstream Partners LLCMilestone SWD #2 31136918
Jan 9, 2019848362Evx Midstream Partners LLCMilestone SWD #2 31136918
Jul 23, 2015808530C&e Production, LLCHwy 16 SWD A #1 31136552
Jun 30, 2015807837High Roller Wells, L.L.C.Highway 72 SWD #1 31136539
Mar 12, 2015804450Cohort Petroleum Management, LLCChoke Canyon SWD #1 31136456
Aug 6, 2014790592Sparkman Energy, LLCEdwards SWD #1H 31136154
Aug 6, 2014790592Sparkman Energy, LLCEdwards SWD #1H 31136154

About this data

RRC UIC well master and H-10 injection reports, settled through Sep 2025; TexNet daily injection for the last settled month; disposal permit tags from Petrora's sector classifier.

Developers: this page as JSON is GET /v1/data/water/tx/mcmullen, documented in the API reference.