Produced water and disposal in Willacy 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 →
Willacy County has 33 active injection and disposal wells, 6 of them permitted for disposal, with 82,100 barrels a day of permitted capacity.
Operators reported 2.0 million barrels injected on H-10 filings in the twelve months to June 2025, down 17% on the year before, about 7% of what the permits allow.
Citation Oil & Gas Corp is the largest injector in the county, with 1.6 million barrels reported across 27 active wells.
- 33
- active injection wells, 6 for disposal
- 82.1K
- bbl/d permitted capacity
- 2.04M
- bbl reported, H-10 year to Jun 2025 -17%
- 7%
- of permitted capacity used
- 173
- UIC permits on file, all time
Reported injection, by month
H-10 FILINGS · TEN YEARS TO JUN 2025
Last 12 months 2,039,114 · prior 12 2,451,507(-17%)
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 |
|---|---|---|---|
| Citation Oil & Gas Corp | 1.6M | 27 | 63.4K |
| Shoco Prod LLC | 316K | 1 | 6K |
| Texas Oil and Gas Oper, LLC | 119K | 3 | 10.2K |
| Apollo Petro Fuels LLC | — | 1 | 2K |
| Dewbre Petro Corp | — | 1 | 500 |
Injection permits
173 UIC PERMITS · 33 ACTIVE · PAGE 1 OF 2
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 |
|---|---|---|---|---|---|---|---|
| Willamar West Unit #135 | Citation Oil & Gas Corp | Active | Disposal | 458K | 6,000 | 2,400–3,870 | Jun 27, 2025 |
| Willamar East Unit #19 D | Citation Oil & Gas Corp | Active | Disposal | 322K | 5,000 | 3,400–4,600 | Aug 1, 2000 |
| Sauz Ranch Mulatos Pasture #185 | Shoco Prod LLC | Active | Enhanced recovery | 316K | 6,000 | 5,050–6,030 | Sep 26, 2012 |
| Willamar West Unit #139 | Citation Oil & Gas Corp | Active | Disposal | 171K | 6,000 | 2,400–3,870 | Jun 30, 2025 |
| Yturria Cattle Company "C" #1 | Texas Oil and Gas Oper, LLC | Active | Enhanced recovery | 119K | 2,000 | 5,778–5,988 | Jul 19, 2010 |
| Willamar West Unit #184WI | Citation Oil & Gas Corp | Active | Enhanced recovery | 10.3K | 3,000 | 7,650–8,200 | Mar 27, 2008 |
| Yturria #3RR | Texas Oil and Gas Oper, LLC | Active | Disposal | — | 7,200 | 2,740–2,747 | Oct 3, 2007 |
| Willamar West Unit #142 | Citation Oil & Gas Corp | Active | Disposal | — | 6,000 | 2,400–3,870 | Jun 30, 2025 |
| Willamar East Unit #20 | Citation Oil & Gas Corp | Active | Disposal | — | 5,000 | 3,500–4,565 | Oct 18, 2005 |
| Willamar West Unit #146WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 3,000 | 7,816–8,030 | Mar 27, 2008 |
| Willamar West Unit #22WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,700–8,000 | Nov 13, 2017 |
| Willamar West Unit #76WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,750–8,050 | Jun 5, 1985 |
| Willamar West Unit #162WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,700–8,100 | Jun 5, 1985 |
| Willamar West Unit #102WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,850–8,150 | Jun 5, 1985 |
| Willamar West Unit #34 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,800–8,100 | Jun 5, 1985 |
| Willamar West Unit #169WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,700–8,100 | Jun 5, 1985 |
| Willamar West Unit #175WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,700–8,100 | Jun 5, 1985 |
| Willamar West Unit #167WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,700–8,050 | Jun 5, 1985 |
| Willamar West Unit #127WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,650–7,990 | Oct 31, 1985 |
| Willamar West Unit #201WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,650–8,100 | Jun 27, 2025 |
| Willamar West Unit #230WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 2,000 | 7,650–8,150 | Nov 21, 1985 |
| Yturria, H. #4014 | Apollo Petro Fuels LLC | Active | Enhanced recovery | — | 2,000 | 5,980–6,880 | Aug 24, 2006 |
| Willamar West Unit #47 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 1,500 | 8,034–8,075 | Jul 10, 1969 |
| Willamar West Unit #147WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 1,500 | 7,650–8,150 | Aug 17, 1983 |
| Willamar West Unit #149WI | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 1,500 | 7,650–8,150 | Aug 17, 1983 |
| Willamar West Unit #119 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 1,000 | 7,998–8,032 | Dec 2, 1993 |
| Willamar West Unit #86 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 1,000 | 7,880–7,983 | Jan 11, 1993 |
| Yturria Cattle Co #F 9 | Texas Oil and Gas Oper, LLC | Active | Enhanced recovery | — | 1,000 | 3,000–3,550 | Feb 13, 1998 |
| Thomas Unit #1 | Dewbre Petro Corp | Active | Enhanced recovery | — | 500 | 8,580–8,960 | Jun 11, 2024 |
| Willamar West Unit #136 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 450 | 7,854–7,994 | Dec 2, 1977 |
| Willamar West Unit #143 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | 450 | 7,894–7,970 | Dec 2, 1977 |
| Willamar West Miocene Unit #M 29 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | — | 6,309–6,319 | Dec 5, 2014 |
| Willamar West Miocene Unit #35 | Citation Oil & Gas Corp | Active | Enhanced recovery | — | — | 6,284–6,298 | Dec 4, 2014 |
| Willamar West Unit #137 | Citation Oil & Gas Corp | Cancelled | Disposal | 643K | 6,000 | 2,432–3,866 | Dec 19, 2013 |
| Raymondville SWD #1 | Trinity Environmental Swd,l.l.c | Plugged | Disposal | — | 25,000 | 6,100–6,800 | Sep 8, 2011 |
| Willamar West Unit #93 | Citation Oil & Gas Corp | Plugged | Disposal | — | 6,000 | 3,200–3,850 | Apr 9, 1998 |
| Willamar West Unit #211WI | Citation Oil & Gas Corp | Plugged | Disposal | — | 6,000 | 2,572–3,710 | Apr 23, 2003 |
| Williamar West Miocene Unit #34 | Citation Oil & Gas Corp | Plugged | Disposal | — | 6,000 | 2,400–3,870 | May 19, 2009 |
| Willamar West Unit #210 | Citation Oil & Gas Corp | Plugged | Disposal | — | 6,000 | 3,200–4,500 | Nov 8, 2007 |
| Sauz Ranch Mulatos Pasture #188 | Chestnut Explor. and Prod., Inc | Cancelled | Enhanced recovery | — | 6,000 | 5,050–6,300 | Mar 28, 2013 |
| Willamar East Unit #18 | Citation Oil & Gas Corp | Plugged | Disposal | — | 3,000 | 3,350–4,350 | Jun 19, 1973 |
| Sauz Ranch Mulatos Pasture #70 | Youngblood, C. S. III | Cancelled | Disposal | — | 3,000 | 4,280–4,660 | Mar 29, 1984 |
| Willamar West Unit #14 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,850–8,150 | Jun 5, 1985 |
| Willamar West Unit #2WS | Texaco Inc | Cancelled | Disposal | — | 2,000 | 2,588–2,809 | Aug 7, 1981 |
| Yturria L. & L. Co. -a- NCT-1 #1D | Texaco Inc | Cancelled | Disposal | — | 2,000 | 3,120–4,400 | Jun 28, 1983 |
| Willamar West Miocene Unit #36 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,890–8,190 | Sep 9, 1991 |
| Willamar West Unit #77 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,800–8,080 | Jun 5, 1985 |
| Willamar West Unit #83 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,850–8,150 | Jun 5, 1985 |
| Willamar West Unit #160WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,150 | Jun 5, 1985 |
| Willamar West Unit #90 | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,800–8,100 | Jun 5, 1985 |
| Willamar West Unit #27 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,000 | Jun 5, 1985 |
| Willamar West Unit #30 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,800–8,100 | Jun 5, 1985 |
| Willamar West Unit #26 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,000 | Jun 5, 1985 |
| Willamar West Unit #23 | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,750–8,050 | Jun 5, 1985 |
| Willamar West Unit #10 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,850–8,150 | Jun 5, 1985 |
| Willamar West Unit #33 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,790–8,070 | Jun 5, 1985 |
| Willamar West Unit #164 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,050 | Jun 5, 1985 |
| Willamar West Unit #166WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,050 | Jun 5, 1985 |
| Willamar West Unit #159WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,200 | Jun 5, 1985 |
| Willamar West Unit #170 | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,100 | Jun 5, 1985 |
| Willamar West Unit #178 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,100 | Jun 5, 1985 |
| Willamar West Unit #182WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,100 | Jun 5, 1985 |
| Willamar West Unit #186WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,200 | Jun 5, 1985 |
| Willamar West Unit #188WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,150 | Jun 5, 1985 |
| Willamar West Unit #196WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,200 | Jun 5, 1985 |
| Willamar West Unit #197WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,200 | Jun 5, 1985 |
| Bucy #7 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,090 | Jun 5, 1985 |
| Willamar West Unit #205WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,150 | Jun 5, 1985 |
| Willamar West Unit #42 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,150 | Jun 5, 1985 |
| Willamar West Unit #211 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,200 | Jun 5, 1985 |
| Willamar West Unit #214 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,150 | Jun 5, 1985 |
| Willamar West Unit #216WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,200 | Jun 5, 1985 |
| Willamar West Unit #218WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,700–8,200 | Jun 5, 1985 |
| Willamar West Unit #163 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,700–8,100 | Jun 5, 1985 |
| Willamar West Unit #92 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,800–8,080 | Jun 5, 1985 |
| Willamar West Unit #97 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,900–8,181 | Jun 5, 1985 |
| Willamar West Unit #100 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,800–8,090 | Jun 5, 1985 |
| Willamar West Unit #94 | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,750–8,030 | Jun 5, 1985 |
| Willamar West Unit #99WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,830–8,100 | Jun 5, 1985 |
| Willamar West Unit #24 | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,650–7,993 | Oct 31, 1985 |
| Bucy, G. W. #3 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,650–7,953 | Oct 31, 1985 |
| Willamar West Unit #85 | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,650–7,990 | Oct 31, 1985 |
| Willamar West Unit #194 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,650–8,100 | Oct 31, 1985 |
| Lozano, Antonio #10 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,650–8,100 | Oct 31, 1985 |
| Raymond, Lenora C. #4 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 2,000 | 7,650–8,050 | Oct 31, 1985 |
| Willamar West Unit #228WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,650–8,150 | Nov 21, 1985 |
| Willamar West Unit #229WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 2,000 | 7,650–8,150 | Nov 21, 1985 |
| Yturria Cattle Company #3 | Maynard Oil Co | Cancelled | Disposal | — | 2,000 | 3,080–3,315 | Nov 30, 1995 |
| Yturria Cattle Co #26 | Hilcorp Engy Co | Plugged | Enhanced recovery | — | 2,000 | 3,054–4,344 | Dec 29, 1995 |
| Sauz Ranch Mulatos Pasture #170 | Shoco Prod LLC | Inactive | Disposal | — | 2,000 | 4,780–5,120 | Jan 17, 2020 |
| Willamar East Unit #1 D | Citation Oil & Gas Corp | Plugged | Disposal | — | 1,710 | 3,420–4,050 | Jan 12, 1968 |
| Sauz Ranch Mulatos Pasture #78 | Chestnut Explor. and Prod., Inc | Cancelled | Disposal | — | 1,500 | 4,305–4,432 | Jul 25, 1994 |
| Sauz Ranch Mulatos Pasture #95 | Cimarex Engy Co. of Colorado | Plugged | Enhanced recovery | — | 1,500 | 7,722–7,740 | May 18, 1998 |
| Sauz Ranch Mulatos Pasture #116 | Youngblood, C. S. III | Cancelled | Disposal | — | 1,500 | 4,310–4,432 | Sep 2, 1994 |
| Willamar West Unit #11 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 1,500 | 8,010–8,036 | Jan 20, 1970 |
| Willamar West Unit #36 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 1,500 | 8,010–8,033 | Sep 9, 1991 |
| Willamar West Unit #52 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 1,500 | 8,062–8,098 | Jul 10, 1969 |
| Willamar West Unit #74 | Citation Oil & Gas Corp | Cancelled | Enhanced recovery | — | 1,500 | 8,022–8,058 | Jul 10, 1969 |
| Willamar West Unit #1WS | Texaco Inc | Cancelled | Disposal | — | 1,500 | 2,522–2,770 | Aug 7, 1981 |
| Willamar West Unit #145WI | Citation Oil & Gas Corp | Plugged | Enhanced recovery | — | 1,500 | 7,650–8,150 | Aug 17, 1983 |
Latest disposal drilling permits
W-1 drilling permits in the county tagged as produced-water disposal.
| Issued | Permit | Operator | Lease / well |
|---|---|---|---|
| Dec 7, 2011 | 729005 | Titan Vacuum Services, LLC | Raymondville SWD #1 48931261 |
| Nov 8, 1985 | 289533 | Amoco Production Company | LA Sal Vieja Swds #3SW 48900531 |
| Oct 25, 1982 | 175285 | Amoco Production Company | Willamar West (Miocene) Unit #M-13 48930119 |
| Jun 26, 1980 | 85196 | Energy Sources, Inc. | Parham, Ellie SWD #4D 48930623 |
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/willacy, documented in the API reference.