Produced water and disposal in Frio 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 →
Frio County has 147 active injection and disposal wells, 24 of them permitted for disposal, with 452,100 barrels a day of permitted capacity.
Operators reported 15 million barrels injected on H-10 filings in the twelve months to June 2025, down 24% on the year before, about 9% of what the permits allow.
Pilot Water Solutions SWD LLC is the largest injector in the county, with 4.6 million barrels reported across 1 active well.
TexNet located 412 M2+ earthquakes in the county's area over the last two years, the largest M3.6.
- 147
- active injection wells, 24 for disposal
- 452K
- bbl/d permitted capacity
- 14.6M
- bbl reported, H-10 year to Jun 2025 -24%
- 9%
- of permitted capacity used
- 554
- UIC permits on file, all time
Reported injection, by month
H-10 FILINGS · TEN YEARS TO JUN 2025
Last 12 months 14,598,917 · prior 12 19,149,249(-24%)
Who injects here
Operators with active permits in the county, by reported H-10 volume over the settled year.
| Operator | Reported, bbl | Active wells | Capacity bbl/d |
|---|---|---|---|
| Pilot Water Solutions SWD LLC | 4.59M | 1 | 40K |
| Select Water Solutions, LLC | 2.29M | 2 | 33K |
| NGL Watersolutions Eagleford,llc | 2.14M | 3 | 60K |
| Bigfoot Oil LLC | 1.73M | 5 | 18.5K |
| Tree Oper, LLC | 1.33M | 1 | 25K |
| Mid River Midstream LLC | 705K | 1 | 10K |
| Rclj Construction, Inc | 510K | 2 | 35K |
| MKS Services, LLC | 481K | 2 | 50K |
| Fulcrum Energy Operating, LLC | 303K | 1 | 3.5K |
| Silver Anchor Resources LLC | 265K | 1 | 4K |
| Flint Oak Engy, LLC | 98K | 1 | 15K |
| Trinity Oper (Usg), LLC | 42K | 1 | 3K |
| C6 Oper, L.L.C | 34.6K | 1 | 2K |
| Arrco Operating, LLC | 17.7K | 1 | 1.5K |
| Formentera Operations LLC | 15.1K | 3 | 60K |
| LP Oper, LLC | 9.58K | 2 | 800 |
| First Rock, Inc | — | 1 | 25K |
| Nec Oper, LLC | — | 1 | 25K |
| Maverick Engy Group, Inc | — | 95 | 11.1K |
| Watson Engy Investments, LLC | — | 13 | 7.9K |
Injection permits
554 UIC PERMITS · 147 ACTIVE · PAGE 1 OF 6
Active permits first, by reported volume, then cancelled, plugged, and never-activated permits.
| Well | Operator | Status | Purpose | Reported, bbl | bbl/d permitted | Zone, ft | Permitted |
|---|---|---|---|---|---|---|---|
| Wilmeth SWD #1 | Pilot Water Solutions SWD LLC | Active | Enhanced recovery | 4.59M | 40,000 | 7,860–8,450 | May 31, 2022 |
| Lea SWD #1 | NGL Watersolutions Eagleford,llc | Active | Enhanced recovery | 2.14M | 15,000 | 4,800–6,000 | Dec 13, 2021 |
| Ses Frio SWD #1 | Select Water Solutions, LLC | Active | Enhanced recovery | 1.5M | 25,000 | 5,000–5,400 | Sep 28, 2022 |
| Dilley-SWD #2A | Tree Oper, LLC | Active | Disposal | 1.33M | 25,000 | 4,900–6,000 | Feb 7, 2013 |
| Pearsall SWD #1 | Select Water Solutions, LLC | Active | Enhanced recovery | 791K | 8,000 | 4,300–4,600 | May 17, 2011 |
| Cat-Dilley SWD #2 | Mid River Midstream LLC | Active | Disposal | 705K | 10,000 | 5,400–6,000 | Nov 23, 2011 |
| Allerkamp, Ernest E. #1H | Bigfoot Oil LLC | Active | Enhanced recovery | 648K | 5,000 | 3,917–3,927 | Sep 23, 2020 |
| Halff & Oppenheimer #1 R | Bigfoot Oil LLC | Active | Enhanced recovery | 363K | 5,000 | 3,914–4,200 | Dec 5, 2022 |
| Halff & Oppenheimer #216 | Bigfoot Oil LLC | Active | Enhanced recovery | 363K | 2,500 | 3,905–3,922 | Oct 13, 2022 |
| Melms Estate #1H | Bigfoot Oil LLC | Active | Enhanced recovery | 360K | 5,000 | 3,856–3,950 | Dec 8, 2023 |
| MKS SWD #2 | MKS Services, LLC | Active | Disposal | 354K | 25,000 | 4,900–6,000 | Jun 18, 2013 |
| Hat Creek HM 05 #101V | Fulcrum Energy Operating, LLC | Active | Disposal | 303K | 3,500 | 6,590–7,800 | Jun 24, 2021 |
| Knappick #1 | Rclj Construction, Inc | Active | Disposal | 302K | 25,000 | 4,900–6,000 | Aug 9, 2007 |
| Stout "A" #2 | Silver Anchor Resources LLC | Active | Disposal | 265K | 4,000 | 4,874–5,500 | Apr 3, 1997 |
| New Wittman #1 | Rclj Construction, Inc | Active | Disposal | 208K | 10,000 | 4,650–5,240 | Mar 12, 1991 |
| MKS SWD #1 | MKS Services, LLC | Active | Disposal | 127K | 25,000 | 4,900–6,000 | Jun 18, 2013 |
| Johnston Ranch #10H | Flint Oak Engy, LLC | Active | Disposal | 98K | 15,000 | 4,043–4,210 | Jun 28, 2024 |
| Shiner Ranch #7 | Trinity Oper (Usg), LLC | Active | Disposal | 42K | 3,000 | 5,530–5,800 | Jun 21, 1993 |
| King, J.H. King -E- #4 | C6 Oper, L.L.C | Active | Disposal | 34.6K | 2,000 | 4,500–4,525 | Nov 11, 1997 |
| Mayo #2 | Arrco Operating, LLC | Active | Disposal | 17.7K | 1,500 | 3,900–3,940 | Jul 22, 1992 |
| Hausser #1SW | Formentera Operations LLC | Active | Enhanced recovery | 13K | 20,000 | 6,410–9,800 | Apr 11, 2017 |
| Hitzfelder #12 | LP Oper, LLC | Active | Enhanced recovery | 9.58K | 400 | 2,622–2,632 | Jan 4, 2022 |
| Mello 308-STX #A311VW | Formentera Operations LLC | Active | Disposal | 2.13K | 20,000 | 4,860–5,285 | Dec 18, 2024 |
| Pearsall SWD #1 | NGL Watersolutions Eagleford,llc | Active | Enhanced recovery | — | 30,000 | 4,000–4,800 | Aug 12, 2011 |
| Dilley Unit -A- #1 | First Rock, Inc | Active | Disposal | — | 25,000 | 4,900–6,000 | Dec 19, 2011 |
| FF Dilley SWD #1 | Nec Oper, LLC | Active | Disposal | — | 25,000 | 4,900–5,660 | Mar 3, 2020 |
| G2 845-846-STX #C311VW | Formentera Operations LLC | Active | Disposal | — | 20,000 | 4,520–4,965 | Jul 18, 2025 |
| Lea SWD #2 | NGL Watersolutions Eagleford,llc | Active | Enhanced recovery | — | 15,000 | 4,800–6,000 | Dec 13, 2021 |
| Frio SWD #1 | Eagle Ford Water and Disposl LLC | Active | Disposal | — | 7,500 | 5,100–5,400 | Jan 6, 2015 |
| Lancaster Agi #1 | Targa Southtex Mdstrm Utility LP | Active | Disposal | — | 3,500 | 8,400–9,850 | Feb 7, 2012 |
| Morales, Fred #3 | Blackbrush O & G, LLC | Active | Disposal | — | 2,000 | 5,350–5,551 | Oct 19, 2006 |
| Harris, John W. (Meyers) #1 | Enhanced RS, Inc | Active | Enhanced recovery | — | 1,000 | 5,000–6,000 | Nov 20, 1996 |
| Melms Estate #2 | Bigfoot Oil LLC | Active | Enhanced recovery | — | 1,000 | 3,900–4,300 | Oct 13, 2003 |
| Keystone/Keystone Ranch #4 | Oilfield Cleantech Water Rec LLC | Active | Disposal | — | 800 | 4,776–5,368 | May 5, 2000 |
| Davis, Ruth Dakin #1 | Block "T" Petro, Inc | Active | Disposal | — | 500 | 4,900–6,000 | Feb 18, 2010 |
| Hitzfelder #13 | LP Oper, LLC | Active | Enhanced recovery | — | 400 | 2,570–2,576 | Feb 15, 2005 |
| Burns, Jane #1D | Watson Engy Investments, LLC | Active | Disposal | — | 4,500 | 3,300–3,800 | Jan 13, 1984 |
| Burns, Jane A #242 | Diamond Energy Services, LP | Active | Enhanced recovery | — | 3,000 | 3,542–3,571 | Aug 21, 2009 |
| Casey Frio B #1 | Mosaic Texas LLC | Active | Disposal | — | 2,000 | 4,050–5,200 | Oct 28, 2011 |
| Burns, Jane #44D | Watson Engy Investments, LLC | Active | Disposal | — | 1,500 | 3,225–3,260 | Apr 29, 1985 |
| Burns, Jane #40W | Diamond Energy Services, LP | Active | Enhanced recovery | — | 1,500 | 3,480–3,515 | May 2, 2008 |
| Davies, S. B. #1 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 500 | 3,944–3,970 | Sep 11, 1981 |
| Big Foot Olmos B Sand Unit #125I | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 400 | 3,200–3,350 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #138I | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 400 | 3,200–3,350 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #69 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 400 | 3,200–3,500 | Feb 17, 1987 |
| Big Foot Olmos B Sand Unit #115 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 400 | 3,276–3,341 | Jan 9, 2020 |
| Rosenauer, Mattie #1I | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 300 | 3,400–3,600 | Oct 9, 1985 |
| Rosenauer, Mattie #4I | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 300 | 3,400–3,600 | Oct 9, 1985 |
| Rosenauer, Mattie #15I | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 300 | 3,400–3,600 | Oct 9, 1985 |
| Rosenauer, Mattie #16 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 300 | 3,400–3,600 | Oct 9, 1985 |
| Burns, Jane -C- #1 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 100 | 3,432–3,465 | Aug 14, 1978 |
| Burns, Jane -C- #3 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 100 | 3,370–3,390 | Aug 14, 1978 |
| Burns, Jane -C- #14 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 100 | 3,396–3,415 | Aug 14, 1978 |
| Burns, Jane -C- #18 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 100 | 3,397–3,407 | Aug 14, 1978 |
| Thompson, Dennis #2 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 100 | 3,451–3,482 | Aug 14, 1978 |
| Thompson, Dennis #3 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 100 | 3,446–3,470 | Aug 14, 1978 |
| Thompson, Dennis #7 | Watson Engy Investments, LLC | Active | Enhanced recovery | — | 100 | 3,457–3,483 | Aug 14, 1978 |
| Big Foot Olmos B Sand Unit #116 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,282–3,302 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #141 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,296–3,354 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #160 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,254–3,309 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #161I | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,281–3,338 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #162 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,313–3,375 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #172 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,236–3,269 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #176 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,311–3,369 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #191 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,312–3,362 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #203 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,341–3,372 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #211 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,273–3,329 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #212 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,308–3,365 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #236 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,268–3,325 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #239 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,343–3,385 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #257 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,285–3,360 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #258 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,324–3,390 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #261 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,399–3,460 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #3 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,120–3,161 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #5 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,152–3,212 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #6 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,209–3,247 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #16 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,138–3,169 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #17 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,145–3,175 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #31 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,154–3,169 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #32 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,157–3,184 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #34 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,200–3,257 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #41 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,181–3,215 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #43 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,188–3,219 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #47 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,266–3,303 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #49 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,290–3,332 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #51 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,202–3,250 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #53 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,208–3,285 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #55 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,261–3,314 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #59 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,310–3,372 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #62 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,222–3,253 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #64 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,247–3,296 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #70 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,317–3,367 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #73 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,232–3,264 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #79 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,304–3,360 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #82 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,232–3,269 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #89 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,210–3,241 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #91 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,232–3,290 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #98 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,219–3,276 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #100 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,242–3,280 | May 1, 1992 |
| Big Foot Olmos B Sand Unit #102 | Maverick Engy Group, Inc | Active | Enhanced recovery | — | 100 | 3,260–3,306 | May 1, 1992 |
Latest disposal drilling permits
W-1 drilling permits in the county tagged as produced-water disposal.
| Issued | Permit | Operator | Lease / well |
|---|---|---|---|
| Sep 7, 2021 | 872510 | Pilot Water Solutions SWD LLC | Wilmeth SWD #1 16334266 |
| Jan 29, 2015 | 802260 | C6 Operating, L.L.C. | King SWD #2 16331552 |
| Feb 25, 2013 | 757322 | Eagle Ford Water and Disposl LLC | Dilley-SWD #2A 16333695 |
| Feb 25, 2013 | 757322 | Tree Operating, LLC | Dilley-SWD #2A 16333695 |
| Nov 21, 2012 | 746956 | Bosque Disposal Systems, LLC | Brice SWD #2 16333648 |
| Oct 29, 2012 | 748255 | Foxborough Energy Company, LLC | Foxborough SWD #1 16333664 |
| Oct 15, 2012 | 749552 | Catarina Salt Water Disposal,llc | Cat-Dilley SWD #3 16333662 |
| Sep 26, 2012 | 748438 | MKS Services, LLC | MKS SWD #2 16333655 |
| Sep 26, 2012 | 748437 | MKS Services, LLC | MKS SWD #1 16333656 |
| Sep 21, 2012 | 748131 | Charles Holston, Inc. | Dilley SWD #1 16333653 |
About this data
RRC UIC well master and H-10 injection reports, settled through Jun 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/frio, documented in the API reference.