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Discharge permits in Wyoming
441 active individual NPDES permits with limits in EPA's file of Oct 22, 2026.
By industry
Sewage treatment plants (81)
- Alpine, Town of WY0035611
- BL Property LLC, dba Brooks Lake Lodge WY0028045
- Basin, Town of WY0020028
- Bear River, Town of WY0031712
- Big Piney, Town of WY0020133
- Buffalo, Town of WY0021024
- Burns, Town of WY0021652
- Byron, Town of WY0020281
- CV Laramie MHP, LLC WY0021954
- Casper, City of WY0021920 · major
- Cheyenne Board of Public Utilities WY0022381 · major
- Cheyenne Board of Public Utilities WY0022934 · major
- City of Douglas WY0020109
- City of Evanston WY0020095 · major
- City of Green River WY0020443 · major
- City of Torrington WY0020231 · major
- Cody, City of WY0020451
- Cokeville, Town of WY0021032
- Dayton, Town of WY0020435
- Deaver, Town of WY0021580
- Dixon, Town of WY0021938
- Douglas, Town of WY0056006
- Dubois, Town of WY0020834
- Encampment, Town of WY0020591
- Fort Bridger Sewer District WY0022071
- Gillette, City of WY0020125 · major
- Glenrock, Town of WY0020630
- Grand Targhee Resort (GT Acquisitions I, LLC) WY0024708
- Greybull, Town of WY0020583
- Guernsey, Town of WY0021831
- Hanna, Town of WY0020745
- Hartville, Town of WY0021440
- Hoy, Philip WY0048488
- Hudson, Town of WY0020664
- Jackson, Town of WY0021458 · major
- Kaycee, Town of WY0021733
- Kemmerer-Diamondville Joint Powers Board WY0020320 · major
- LaBarge, Town of WY0022080
- Lander, City of WY0020389 · major
- Laramie, City of WY0022209 · major
- Lovell, Town of WY0020061
- Lyman, Town of WY0020117
- Manderson, Town of WY0052442
- Marbleton, Town of WY0021997
- Meadow Park Village Homeowners Association WY0031348
- Meeteetse, Town of WY0020044
- Moorcroft, Town of WY0021741
- Mountain View, Town of WY0022896
- National Park Service WY0023442
- Pilot Company WY0035700
- Pine Bluffs, Town of WY0032212
- Pinedale, Town of WY0020656
- Powder Horn Ranch, LLC WY0036251
- Powell, City of WY0020648 · major
- Ranchester, Town of WY0022161
- Rawlins, City of WY0020427 · major
- Regency of Wyoming, Inc. WY0022128
- Riverside, Town of WY0032662
- Riverton, City of WY0020672 · major
- Rock Springs, City of WY0022357 · major
- Saratoga, Town of WY0021491
- Sheridan, City of WY0020010 · major
- Sheridan, City of WY0035661
- Sinclair, Town of WY0020397
- TA Operating LLC dba Travel Centers of America WY0036153
- Tallgrass Midstream, LLC WY0056227
- Ten Sleep, Town of WY0020168
- Thayne, Town of WY0025895
- The Viking Resort LLC DBA Trailhead Lodge WY0052451
- Thermopolis, Town of WY0020192 · major
- Town of Baggs WY0022888
- Town of Clearmont WY0022063
- Town of Fort Laramie WY0020567
- Town of Rock River WY0020184
- US Forest Service - Bighorn National Forest WY0020931
- Upton, Town of WY0020605
- Wydot WY0043745
- Wade's Mobile Manor WY0024651
- Worland, City of WY0020176 · major
- Wright Water & Sewer District WY0025992
- Yellow Creek Estates Mobile Home Park WY0028665
Industrial and other (360)
- 3 Creek Ranch WY0052094
- A.O. Bullock WY0097020
- ATR Energy Corp. WY0096971
- Ax MHC Snake River LLC WY0095320
- Aethon Energy Operating LLC WY0002062 · Crude Petroleum And Natural Gas
- Alpha Energy LLC WY0025780 · Crude Petroleum And Natural Gas
- Amplify Energy Operating LLC WY0094803
- Anadarko E&P Onshore, LLC WY0044164 · Crude Petroleum And Natural Gas
- Anschutz Exploration Corporation WY0097031 · Construction Sand And Gravel
- Antler Energy, LLC WY0028231 · Crude Petroleum And Natural Gas
- Antler Energy, LLC WY0034070 · Crude Petroleum And Natural Gas
- Arnell Oil Company WY0024368 · Crude Petroleum And Natural Gas
- Arnell Oil Company WY0024376 · Crude Petroleum And Natural Gas
- Astoria Park Conservancy WY0096440 · Amusement And Recreation
- Aud & Di Campground Services, Inc. WY0095613
- B&B Aggregates WY0095711
- Bareto Energy, LLC WY0000353 · Crude Petroleum And Natural Gas
- Bareto Energy, LLC WY0026816 · Crude Petroleum And Natural Gas
- Bareto Energy, LLC WY0026867 · Crude Petroleum And Natural Gas
- Bareto Energy, LLC WY0027731 · Crude Petroleum And Natural Gas
- Bareto Energy, LLC WY0031739 · Crude Petroleum And Natural Gas
- Bareto Energy, LLC WY0032051 · Crude Petroleum And Natural Gas
- Barn Owls, LLC WY0095753
- Barn Owls, LLC WY0095761
- Barn Owls, LLC WY0095869
- Barn Owls, LLC WY0096296
- Bataa Oil, Inc WY0095915
- Bataa Oil, Inc. WY0022578 · Crude Petroleum And Natural Gas
- Bataa Oil, Inc. WY0040151 · Crude Petroleum And Natural Gas
- Bentonite Performance Minerals, LLC WY0096563 · Clay And Related Minerals
- Berenergy Corporation WY0097013 · Crude Petroleum And Natural Gas
- Berenergy Corporation WY0097024
- Big Muddy Operating, LLC WY0000710 · Crude Petroleum And Natural Gas
- Big Muddy Operating, LLC WY0000914 · Crude Petroleum And Natural Gas
- Bighorn Resort Holdings LLC WY0096938
- Bitterroot Energy Partners LLC WY0096911
- Black Bear Oil Corporation WY0000744 · Crude Petroleum And Natural Gas
- Black Bear Oil Corporation WY0024503 · Crude Petroleum And Natural Gas
- Black Bear Oil Corporation WY0024864 · Crude Petroleum And Natural Gas
- Black Bear Oil Corporation WY0031305 · Crude Petroleum And Natural Gas
- Black Bear Oil Corporation WY0032255 · Crude Petroleum And Natural Gas
- Black Butte Coal Company WY0096857
- Black Gold Services Inc WY0001473 · Crude Petroleum And Natural Gas
- Black Hills Corporation WY0097001 · Electric Services
- Black Hills Energy WY0096784
- Black Thunder Oil WY0033383 · Crude Petroleum And Natural Gas
- Black Thunder Oil LLC WY0096822
- Black Thunder Oil LLC WY0096831
- BreitBurn Operating, LP WY0000761 · Crude Petroleum And Natural Gas
- BreitBurn Operating, LP WY0001031 · Crude Petroleum And Natural Gas
- BreitBurn Operating, LP WY0001490 · Crude Petroleum And Natural Gas
- BreitBurn Operating, LP WY0002437 · Crude Petroleum And Natural Gas
- BreitBurn Operating, LP WY0020265 · Crude Petroleum And Natural Gas
- Breitburn Operating, LP WY0000973 · Crude Petroleum And Natural Gas
- Bridger Coal Company WY0030350 · Bituminous Coal And Lignite - Surface
- Buckskin Mining Company WY0028479 · Bituminous Coal And Lignite - Surface
- Burlington, Town of WY0096512
- Carbon Creek Energy, LLC WY0055638 · Crude Petroleum And Natural Gas
- Cardinal Wyoming LLC WY0035521 · Crude Petroleum And Natural Gas
- Carl D. Underwood Oil & Gas WY0027367 · Crude Petroleum And Natural Gas
- Carol-Holly Oil Corporation WY0025283 · Crude Petroleum And Natural Gas
- Carol-Holly Oil Corporation WY0027308 · Crude Petroleum And Natural Gas
- Carol-Holly Oil Corporation WY0035726 · Crude Petroleum And Natural Gas
- Central Wyoming Regional Water System WY0097018 · Water Supply
- Chaco Energy Company WY0026611 · Crude Petroleum And Natural Gas
- Chaco Energy Company WY0028126 · Crude Petroleum And Natural Gas
- Chemtrade Logistics WY0034207 · Natural Gas Liquids
- Chevron Environmental Management Company WY0036412 · Nonclassifiable Establishments
- Cheyenne Board of Public Utilities WY0031721 · Water Supply
- Cheyenne Regional Airport WYS000020 · Airports, Flying Fields, & Services
- Cheyenne Renewable Diesel Company LLC. WY0000442 · major · Manufacturing Industries
- Chipcore, LLC WY0023507 · Crude Petroleum And Natural Gas
- Chipcore, LLC WY0047295 · Oil And Gas Exploration Services
- Citation Oil and Gas Corporation WY0001171 · Crude Petroleum And Natural Gas
- Citation Oil and Gas Corporation WY0001481 · Crude Petroleum And Natural Gas
- Citation Oil and Gas Corporation WY0001503 · Crude Petroleum And Natural Gas
- Citation Oil and Gas Corporation WY0002402 · Crude Petroleum And Natural Gas
- Citation Oil and Gas Corporation WY0020508 · Crude Petroleum And Natural Gas
- Citation Oil and Gas Corporation WY0022454 · Crude Petroleum And Natural Gas
- Citation Oil and Gas Corporation WY0023914 · Crude Petroleum And Natural Gas
- Cline Production Company WY0097007 · Crude Petroleum And Natural Gas
- Cloud Peak Operating LLC WY0094439 · Crude Petroleum And Natural Gas
- Cody Energy, Inc. WY0094013
- Contango Resources, INC WY0020699 · Crude Petroleum And Natural Gas
- Contango Resources, INC WY0022829 · Crude Petroleum And Natural Gas
- Contango Resources, INC WY0022837 · Crude Petroleum And Natural Gas
- Contango Resources, INC WY0024414 · Natural Gas Liquids
- Contango Resources, INC WY0031704 · Crude Petroleum And Natural Gas
- Contango Resources, INC WY0032859 · Crude Petroleum And Natural Gas
- Contango Resources, INC WY0033120 · Crude Petroleum And Natural Gas
- Contango Resources, INC WY0033138 · Crude Petroleum And Natural Gas
- Contango Resources, INC WY0036617 · Crude Petroleum And Natural Gas
- Contango Resources, LLC WY0000868 · Crude Petroleum And Natural Gas
- Contango Resources, LLC WY0002445 · Crude Petroleum And Natural Gas
- Contango Resources, LLC WY0036196 · Gas Production And/Or Distribution
- Cowboy Clean Fuels, LLC WY0049204 · Crude Petroleum And Natural Gas
- Cowboy Clean Fuels, LLC WY0053821 · Crude Petroleum And Natural Gas
- Cowboy Clean Fuels, LLC WY0056839 · Crude Petroleum And Natural Gas
- D90 Energy LLC WY0000281 · Oil And Gas Exploration Services
- D90 Energy LLC WY0000264 · Crude Petroleum And Natural Gas
- Denbury Onshore, LLC WY0000256 · Crude Petroleum And Natural Gas
- Denbury Onshore, LLC WY0002194 · Crude Petroleum And Natural Gas
- Denbury Onshore, LLC WY0036064 · Crude Petroleum And Natural Gas
- Denbury Onshore, LLC WY0052370 · Crude Petroleum And Natural Gas
- Diamond Oil & Gas WY0096946
- Double L LLC WY0097012
- E & B Natural Resources Management Corporation WY0095125
- E & B Natural Resources Management Corporation WY0096229
- Eagle Specialty Materials, LLC WY0003514 · Bituminous Coal And Lignite - Surface
- Eagle Specialty Materials, LLC WY0026018 · Bituminous Coal And Lignite - Surface
- Ellbogen, John P., LTD WY0025470 · Crude Petroleum And Natural Gas
- Ellwood Exploration, LLC WY0096181 · Crude Petroleum And Natural Gas
- Encampment, Town of WY0035980 · Water Supply
- Energy Equity Company WY0032760 · Crude Petroleum And Natural Gas
- Energy Fuels Resources (USA), Inc. WY0095702
- Enterprise Products Operating, LP WY0056499 · Natural Gas Transmission
- Evans Construction Company WY0097034 · Construction Sand And Gravel
- Everest Oil & Gas, LLC WY0096351
- Flying J Petroleums, Inc WY0000451 · Petroleum Refining
- Gold King Corp WY0097003
- Gorman Construction, LLC WY0036234 · Crude Petroleum And Natural Gas
- Grand Teton Park, LLC WY0096890
- Granite Creek Energy, LLC WY0097027 · Crude Petroleum And Natural Gas
- Granite Creek Operating LLC WY0002984 · Crude Petroleum And Natural Gas
- Granite Creek Operating LLC WY0003140 · Crude Petroleum And Natural Gas
- Granite Creek Operating LLC WY0023248 · Crude Petroleum And Natural Gas
- Green Reserve Energy Holdings, LLC WY0028274 · Crude Petroleum And Natural Gas
- Green River Rock Springs Sweetwater County JPWB WY0000027
- H2Oil Services LLC WY0097022
- Hadley Jackson Oil WY0096407 · Crude Petroleum And Natural Gas
- Hadley/Jackson Energy, LLC WY0096211
- Hilcorp Energy Company WY0032697 · Crude Petroleum And Natural Gas
- Homeowner WY0097025
- Homer Dean Oil Company WY0096954
- Impact Energy Operating, LLC WY0034142 · Crude Petroleum And Natural Gas
- Impact Energy Operating, LLC WY0094391
- Indian Creek Resources, Inc. WY0096113 · Crude Petroleum And Natural Gas
- Iron Creek Properties, Inc. WY0023566 · Crude Petroleum And Natural Gas
- J & J Production WY0001619 · Crude Petroleum And Natural Gas
- JP Oil Company WY0001864 · Crude Petroleum And Natural Gas
- JP Oil Company WY0028002 · Crude Petroleum And Natural Gas
- JTL Group Inc. dba Knife River WY0096199
- Jackson National Fish Hatchery WY0097021
- Jackson, Town of WY0049484 · Nonclassifiable Establishments
- JoeMar Wyoming Operating LLC WY0056375 · Crude Petroleum And Natural Gas
- Kemmerer Operations, LLC WY0000051 · Bituminous Coal And Lignite - Surface
- Kemmerer-Diamondville Joint Powers Board WY0000116 · Water Supply
- Kennecott Uranium Company WY0025950 · major · Uranium-Radium-Vanadium Ores
- Legacy Reserves Operating, LP WY0024171 · Crude Petroleum And Natural Gas
- Legacy Reserves Operating, LP WY0024180 · Crude Petroleum And Natural Gas
- Loil Oil LLC dba Loil Energy Partners WY0096865
- Loil Oil, LLC DBA Loil Energy Partners WY0000663 · Crude Petroleum And Natural Gas
- Loil Oil, LLC DBA Loil Energy Partners WY0024716 · Crude Petroleum And Natural Gas
- LoneHart, LLC WY0056111 · Construction Sand And Gravel
- Lost Creek ISR, LLC WY0097006 · Uranium-Radium-Vanadium Ores
- M & K Oil Company, LLC WY0002593 · Crude Petroleum And Natural Gas
- M&K Oil Company, LLC WY0001643 · Crude Petroleum And Natural Gas
- M&K Oil Company, LLC WY0032832 · Crude Petroleum And Natural Gas
- M&K Oil Company, LLC WY0033596 · Crude Petroleum And Natural Gas
- M&K Oil Company, LLC WY0034169 · Crude Petroleum And Natural Gas
- M&K Oil Company, LLC WY0035599 · Crude Petroleum And Natural Gas
- M&K Oil Company, LLC WY0036439 · Crude Petroleum And Natural Gas
- M2S Oil LLC WY0001627 · Crude Petroleum And Natural Gas
- M2S Oil, LLC WY0026859 · Crude Petroleum And Natural Gas
- MEGA Energy, LLC WY0096491
- Martin Marietta Materials, Inc. WY0032492 · Crushed And Broken Limestone
- Martin Marietta Materials, Inc. WY0034266 · Crushed And Broken Granite
- Maxim Drilling and Exploration, Inc. WY0053724 · Crude Petroleum And Natural Gas
- Maximus Operating, Ltd. WY0096999 · Crude Petroleum And Natural Gas
- McMurry Ready Mix WY0094170 · Crushed And Broken Limestone
- Meerkat Logistics & Operations, LLC WY0025887 · Crude Petroleum And Natural Gas
- Meeteetse, Town of WY0046175
- Merit Energy Company WY0000175 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0000680 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0001732 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0001759 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0001899 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0001902 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0001911 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0022900
- Merit Energy Company WY0024261 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0026590 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0027197 · Crude Petroleum And Natural Gas
- Merit Energy Company WY0036421 · Natural Gas Liquids
- Merit Energy Company WY0096415
- Merit Energy Company-Chatterton Battery WY0000922 · Crude Petroleum And Natural Gas
- Merit Energy Company-Maverick Springs Battery WY0000779 · Crude Petroleum And Natural Gas
- Mid-Con Energy Operating, LLC WY0097040
- Mountain Cement Company LLC WY0097037 · Miscellaneous Nonmetallic Minerals
- Mullinax Concrete Service Co., Inc. WY0096041
- Mullinax Inc. WY0095079
- Mullinax Inc. WY0095851
- Nepeco WY0030589 · Crude Petroleum And Natural Gas
- Navajo Transitional Energy Company, LLC WY0023761 · Bituminous Coal And Lignite - Surface
- Navajo Transitional Energy Company, LLC WY0030198 · Bituminous Coal And Lignite - Surface
- Navajo Transitional Energy Company, LLC WY0096288
- New Era Petroleum WY0032565 · Crude Petroleum And Natural Gas
- Newcastle, City of WY0096610
- Northeast Wyoming Regional Airport WY0032522 · Airports, Flying Fields, & Services
- O'Brien Energy Resources WY0054241 · Crude Petroleum And Natural Gas
- ONEOK Rockies Midstream WY0097008
- Oil Mountain Energy, Inc. WY0096989 · Crude Petroleum And Natural Gas
- Osage Partners LLC WY0003221 · Crude Petroleum And Natural Gas
- Osage Partners, LLC WY0003298 · Crude Petroleum And Natural Gas
- Osage Partners, LLC WY0003301 · Crude Petroleum And Natural Gas
- Osage Partners, LLC WY0026701 · Crude Petroleum And Natural Gas
- Osage Partners, LLC WY0026719 · Crude Petroleum And Natural Gas
- Ott, Inc. WY0056359 · Crude Petroleum And Natural Gas
- PDS Resources LLC WY0024023 · Crude Petroleum And Natural Gas
- PDS Resources, LLC WY0096571
- Poc-I, LLC WY0001414 · Crude Petroleum And Natural Gas
- Poc-I, LLC WY0003051 · Crude Petroleum And Natural Gas
- Poc-I, LLC WY0095681
- Pacificorp WY0003115 · major · Electric Services
- Pacificorp/Naughton Plant WY0020311 · Electric Services
- Pathfinder Mines Corp. WY0096466 · Uranium-Radium-Vanadium Ores
- Peabody Caballo Mining, LLC WY0024031 · Bituminous Coal And Lignite - Surface
- Peabody Caballo Mining, LLC WY0025755 · Bituminous Coal And Lignite - Surface
- Peabody Powder River Mining, LLC WY0028177 · Bituminous Coal And Lignite - Surface
- Petroleum Resource Management WY0031461 · Crude Petroleum And Natural Gas
- Petrox Resources, Inc. WY0094510
- Phillips 66 Company WY0030481 · Crude Petroleum And Natural Gas
- Phillips 66 Company WY0035777 · Sanitary Services
- Phoenix Production Sheldon Dome WY0024953 · Crude Petroleum And Natural Gas
- Pilot Company WY0033944 · Gasoline Service Stations
- Pilot Company WY0041084 · Gasoline Service Stations
- Pilot Travel Centers LLC WY0096580
- Pine Haven Resources, LLC WY0001198 · Oil And Gas Exploration Services
- Pine Haven Resources, LLC WY0033065 · Crude Petroleum And Natural Gas
- Pine Haven Resources, LLC WY0034151 · Crude Petroleum And Natural Gas
- Pine Haven, Town of WY0095907
- Principle Petroleum LLC WY0095559
- Pronghorn Operating, LLC WY0048321 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0048381 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0049158 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0049344 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0049697 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0049999
- Pronghorn Operating, LLC WY0050865 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0051276 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0051446 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0051713 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0051837 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0051918 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0052124 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0052221 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0052299 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0052426 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0052817 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0052833 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0054151 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0054593 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0055514 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0055590 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0056529 · Crude Petroleum And Natural Gas
- Pronghorn Operating, LLC WY0094609
- Pronghorn Operating, LLC WY0095087
- Pronghorn Operating, LLC WY0095541
- Pronghorn Operation, LLC WY0056081 · Crude Petroleum And Natural Gas
- Providence Oil Development LLC WY0096539
- RIM Operating, Inc. WY0097002 · Crude Petroleum And Natural Gas
- Rael Resources LLC WY0097009 · Crude Petroleum And Natural Gas
- Ranch Oil Company WY0000299 · Crude Petroleum And Natural Gas
- Ranch Oil Company WY0034193 · Crude Petroleum And Natural Gas
- Red Tiger Oil and Gas, LLC WY0026310 · Crude Petroleum And Natural Gas
- Red Tiger Oil and Gas, LLC WY0096881
- Remediation Management Services Company WY0048810 · Petroleum Bulk Stations & Terminals
- Richardson Operating Company WY0027316 · Crude Petroleum And Natural Gas
- Richardson Operating Company WY0035840 · Crude Petroleum And Natural Gas
- Rock River, Town of WY0035041
- Russell Construction Company WY0096792
- SEP - Pass Creek, LLC WY0096750
- Shadco WY0025011 · Crude Petroleum And Natural Gas
- Seedy Draw LLC WY0034673 · Crude Petroleum And Natural Gas
- Sheridan County School District #1 WY0056308 · Alkalies And Chlorine
- Sheridan, City of WY0001392 · Water Supply
- Shoshone Municipal Pipeline WY0035629 · Pipelines
- Silver Eagle Refining, Inc. WYS000014 · Petroleum Refining
- Simon Oil WY0025071 · Crude Petroleum And Natural Gas
- Simon Oil WY0095877
- Simon Oil LLC WY0095532
- Six Bar Oil, LLC WY0024741 · Crude Petroleum And Natural Gas
- Six Bar Oil, LLC WY0024759 · Crude Petroleum And Natural Gas
- Six Bar Oil, LLC WY0097026 · Drilling Oil And Gas Wells
- Skinner Oil and Gas, LLC WY0097028 · Crude Petroleum And Natural Gas
- Slate Refining, LLC WYS000018 · Petroleum Refining
- Smokey Gap Oil Co. LLC WY0002941 · Crude Petroleum And Natural Gas
- Snowy Owl, LLC WY0096814
- South Pass Petroleum Inc. WY0028860 · Crude Petroleum And Natural Gas
- Spellbound Energy LLC WY0001694
- Spring Gulch Coal Company WY0030317 · Bituminous Coal And Lignite - Surface
- Strata Energy WY0095885
- Sunshine Valley Petroleum WY0034681 · Crude Petroleum And Natural Gas
- T2 Operating Corporation WY0001350 · Crude Petroleum And Natural Gas
- TA Operating LLC WY0035246 · Gasoline Service Stations
- Tata Chemicals North America WYS000019
- The Daube Company WY0000272 · Crude Petroleum And Natural Gas
- Thunder Basin Coal Company, LLC WY0024091 · Bituminous Coal And Lignite - Surface
- Thunder Basin Coal Company, LLC WY0028193 · Bituminous Coal And Lignite - Surface
- Tobinsnet Oil & Gas LTD WY0045900 · Crude Petroleum And Natural Gas
- Town of Albin WY0097033
- TriBar Resources, LLC WY0002721 · Crude Petroleum And Natural Gas
- True Oil LLC WY0096920
- True Oil, LLC WY0034983 · Crude Petroleum And Natural Gas
- True Oil, LLC WY0096521
- US Department of the Interior, Fish and Wildlife WY0035688 · Fish Hatcheries And Preserves
- US SFR Owner, LLC WY0097036
- USA Energy, LLC WY0000817 · Crude Petroleum And Natural Gas
- USA Energy, LLC WY0000825 · Crude Petroleum And Natural Gas
- USA Energy, LLC WY0000841 · Crude Petroleum And Natural Gas
- USA Energy, LLC WY0000906 · Crude Petroleum And Natural Gas
- USA Energy, LLC WY0023990 · Crude Petroleum And Natural Gas
- Union Pacific Railroad WY0000647 · Switching And Terminal Services
- Union Pacific Railroad Company WY0032590 · major · Railroads, Line-Haul Operating
- University of Wyoming WY0032336
- VCP Wyoming, LLC WY0001520 · Crude Petroleum And Natural Gas
- VCP Wyoming, LLC WY0002241 · Crude Petroleum And Natural Gas
- VCP Wyoming, LLC WY0095346
- VCP Wyoming, LLC WY0095931
- Valkyrie Operating, LLC WY0000787 · Crude Petroleum And Natural Gas
- Valkyrie Operating, LLC WY0001210 · Crude Petroleum And Natural Gas
- Valkyrie Operating, LLC WY0024660 · Crude Petroleum And Natural Gas
- Valkyrie Operating, LLC WY0026051 · Crude Petroleum And Natural Gas
- Valkyrie Operating, LLC WY0034002 · Crude Petroleum And Natural Gas
- Valkyrie Operating, LLC WY0035271 · Crude Petroleum And Natural Gas
- Vaquero Bighorn, LLC WY0054798 · Crude Petroleum And Natural Gas
- Vermilion Energy USA, LLC WY0096083
- Vermilion Energy USA, LLC WY0096091
- Vortex Petroleum, Inc. WY0026573 · Crude Petroleum And Natural Gas
- Wesco Operating Inc WY0000469 · Crude Petroleum And Natural Gas
- Wesco Operating Inc Oil and Gas Operation WY0000221 · Crude Petroleum And Natural Gas
- WY Basin Operating LLC WY0096679
- WY Basin Operating LLC WY0096776
- WYDOT - Basin WY0096725
- WYOIL Corporation WY0095923 · Crude Petroleum And Natural Gas
- Wesco Operating WY0025607 · Crude Petroleum And Natural Gas
- Wesco Operating - Tensleep #1 WY0025232 · Crude Petroleum And Natural Gas
- Wesco Operating, Inc. WY0000493 · Crude Petroleum And Natural Gas
- Western American Resources, LLC WY0096733
- Western Fuels-Wyoming, Inc. WY0032964 · Bituminous Coal And Lignite - Surface
- Western Sugar Cooperative WY0000418 · major · Beet Sugar
- Westmoreland Haystack Mining LLC WY0096873
- White Rock Oil and Gas, L.L.C. WY0000388 · Crude Petroleum And Natural Gas
- White Rock Oil and Gas, L.L.C. WY0024422 · Crude Petroleum And Natural Gas
- White Rock Oil and Gas, L.L.C. WY0035491 · Crude Petroleum And Natural Gas
- White Rock Oil and Gas, L.L.C. WY0043966 · Crude Petroleum And Natural Gas
- Willow Springs Natural Spring Water WY0097004
- Wind River Energy Commission WY0000949 · Crude Petroleum And Natural Gas
- Wind River Energy Commission WY0033740 · Crude Petroleum And Natural Gas
- Wyodak Resources Development Corporation WY0001261 · Bituminous Coal And Lignite - Surface
- Wyoming Air National Guard WY0028576 · Airports, Flying Fields, & Services
- Wyoming Air National Guard WY0056731 · Pumps And Pumping Equipment
- Wyoming Game & Fish Department WY0001988 · Fish Hatcheries And Preserves
- Wyoming Game and Fish Department WY0000094 · Fish Hatcheries And Preserves
- Wyoming Game and Fish Department WY0002003 · Fish Hatcheries And Preserves
- Wyoming Game and Fish Department WY0002011 · Fish Hatcheries And Preserves
- Wyoming Game and Fish Department WY0002046 · Fish Hatcheries And Preserves
- Wyoming Game and Fish Department WY0002054 · Fish Hatcheries And Preserves
- Wyoming Game and Fish Department WY0095656
- Wyoming Refining Company WY0001163 · Petroleum Refining
Source: EPA ECHO, Oct 22, 2026. As JSON: /api/v1/permits?state=WY · MCP: https://passage-data.com/mcp · All states