Environmental compliance records in Casper, WY
273 active facilities in Casper hold an EPA air, water or hazardous-waste identifier. The most common industries: Mining, Quarrying, and Oil and Gas Extraction (29), Retail Trade (27), Manufacturing (23). 6 had a formal enforcement action in the last five years.
| Facility | Programs | Inspections (5 yr) | Formal actions (5 yr) | Penalties (5 yr) | Compliance status |
|---|---|---|---|---|---|
| 307 COLLISION CENTER | Hazardous waste | 1 | — | — | No Violation Identified |
| A-1 USED TIRES | Hazardous waste | — | — | — | No Violation Identified |
| ABLE EQUIPMENT | Hazardous waste | — | — | — | No Violation Identified |
| ADVANCE AUTO PARTS #107457 | Hazardous waste | 1 | — | — | No Violation Identified |
| AHERN | Hazardous waste | — | — | — | No Violation Identified |
| ALBERSTONS 2060 WESTRIDGE STORE 60 | Hazardous waste | 1 | — | — | No Violation Identified |
| ALBERTSONS 2062 HILLTOP | Hazardous waste | 1 | — | — | No Violation Identified |
| ALTITUDE VETERINARY HOSPITAL WEST | Hazardous waste | — | — | — | No Violation Identified |
| AMAZON.COM SERVICES LLC - WWY1 | Hazardous waste | — | — | — | No Violation Identified |
| AMBIPAR RESPONSE COLORADO INC-CASPER | Hazardous waste | — | — | — | No Violation Identified |
| AMEGA WEST | Hazardous waste | — | — | — | No Violation Identified |
| AMOCO CASPER REFINERY SITE - NOT ACTIVE | Water | 1 | — | — | No Violation Identified |
| AMOCO OIL SS# 9561 | Hazardous waste | — | — | — | No Violation Identified |
| AMOCO PIPELINE CO. - CASPER STATION | Air | — | — | — | No Violation Identified |
| AMOCO PIPELINE TANK FARM | Hazardous waste | — | — | — | No Violation Identified |
| ANADRILL INC | Hazardous waste | — | — | — | No Violation Identified |
| AUTO OASIS, LLC | Hazardous waste | — | — | — | No Violation Identified |
| B & T FABRICATION INC | Hazardous waste | 1 | — | — | No Violation Identified |
| BAGGS MAN CAMP-NABORS DRILLING USA INC. | Water, Hazardous waste | 1 | — | — | Violation Identified |
| BAKER HUGHES - PROCESS AND PIPELINE SERVICES | Water | — | — | — | Violation Identified |
| BAKER HUGHES INTEQ | Hazardous waste | — | — | — | No Violation Identified |
| BAKER HUGHES OILFIELD OPERATIONS, INC. | Hazardous waste | — | — | — | No Violation Identified |
| BAKER OIL TOOLS | Hazardous waste | — | — | — | No Violation Identified |
| BAKER PETROLITE, CASPER, WY | Hazardous waste | — | — | — | No Violation Identified |
| BANNER HEALTH WYOMING MEDICAL CENTER, CENTRAL SERVICES | Water | — | — | — | No Violation Identified |
| BEARING, BELT & CHAIN, INC. DBA NAPA AUTO PARTS | Hazardous waste | — | — | — | No Violation Identified |
| BELL PETROLEUM SERVICES | Hazardous waste | — | — | — | No Violation Identified |
| BELLE FOURCHE PIPELINE COMPANY - ASH COULEE INCIDENT | Water | — | — | — | No Violation Identified |
| BFI WASTE SYSTEMS OF NORTH AMERICA | Hazardous waste | — | — | — | No Violation Identified |
| BIG HORN WIRELINE CASPER FACILITY | Water | 1 | — | — | No Violation Identified |
| BILLY D AUTOMOTIVE | Hazardous waste | — | — | — | No Violation Identified |
| BJ CHEMICAL SERVICES | Hazardous waste | — | — | — | No Violation Identified |
| BLACK HILLS TRUCKING | Hazardous waste | — | — | — | No Violation Identified |
| BLACK MARKET VAPE SHOP | Hazardous waste | 2 | — | — | No Violation Identified |
| BLACK MARKET VAPE SHOP | Hazardous waste | 2 | — | — | No Violation Identified |
| BOBCAT OF CASPER | Hazardous waste | — | — | — | No Violation Identified |
| BP CASPER FORMER REFINERY | Hazardous waste | 1 | — | — | No Violation Identified |
| BP PRODUCTS N. AMERICA, INC. SODA LAKE | Hazardous waste | — | — | — | No Violation Identified |
| BRAKE SUPPLY | Water | 1 | — | — | No Violation Identified |
| BRAKE SUPPLY CO. MOUNTAIN STATES DIV | Hazardous waste | — | — | — | No Violation Identified |
| BROKEN WRENCH LLC | Drinking water | — | 1 | — | No Violation Identified |
| BUCKNUM BENTONITE PLANT | Air | — | 1 | $166,000 | No Violation Identified |
| BUCKNUM PLANT | Water | 2 | — | — | No Violation Identified |
| C J ABBOTT INC | Hazardous waste | — | — | — | No Violation Identified |
| CALIBER COLLISION CENTER - CASPER WY 1404 | Hazardous waste | — | — | — | No Violation Identified |
| CAMERON A SCHLUMBERGER COMPANY | Hazardous waste | — | — | — | No Violation Identified |
| CAMERON EQUIPMENT YARD | Water | 1 | — | — | Violation Identified |
| CAPSTAR DRILLING, FKA ELENBURG EXPLORATION INC. | Hazardous waste | — | — | — | No Violation Identified |
| CAR CARE INC. | Hazardous waste | — | — | — | No Violation Identified |
| CASPER - LUTHER CLASSICAL COLLEGE | Water | 1 | — | — | No Violation Identified |
| CASPER AIR SERVICES | Hazardous waste | — | — | — | No Violation Identified |
| CASPER COLLISION CENTER | Hazardous waste | — | — | — | No Violation Identified |
| CASPER CONCRETE COMPANY | Hazardous waste | — | — | — | No Violation Identified |
| CASPER DRY CLEANERS | Hazardous waste | — | — | — | No Violation Identified |
| CASPER FACILITY - NORTH PARK | Water | 2 | — | — | Violation Identified |
| CASPER MANUFACTURING INC. | Hazardous waste | — | — | — | No Violation Identified |
| CASPER PLANT | Water | 1 | — | — | No Violation Identified |
| CASPER PLANT (BLACK HILLS BENTONITE) | Air, Hazardous waste | 1 | — | — | No Violation Identified |
| CASPER PUMP STATION | Air, Hazardous waste | 1 | — | — | No Violation Identified |
| CASPER RC/ FMS | Hazardous waste | — | — | — | No Violation Identified |
| CASPER SOLID WASTE MANAGEMENT FACILITY | Air, Hazardous waste | 4 | — | — | Violation |
| CASPER SYSTEMS OPERATIONS CENTER | Hazardous waste | — | — | — | No Violation Identified |
| CASPER TRUCK CENTER | Hazardous waste | — | — | — | No Violation Identified |
| CASPER VETERANS MUSEUM | Hazardous waste | — | — | — | No Violation Identified |
| CASPER, CITY OF | Water | — | — | — | No Violation Identified |
| CASPER-NATRONA COUNTY INTERNATIONAL AIRPORT | Water | 1 | — | — | Violation Identified |
| CATHEDRAL ENERGY SERVICES, INC. | Hazardous waste | — | — | — | No Violation Identified |
| CENEX CONVENIENCE STORE | Hazardous waste | — | — | — | No Violation Identified |
| CENTRAL BODY & PAINT | Hazardous waste | 1 | — | — | No Violation Identified |
| CENTRAL SERVICE CENTER CITY OF CASPER | Hazardous waste | — | — | — | No Violation Identified |
| CENTRAL WY REGIONAL WATER SYSTEM JPB-SURFACE WATER TREATMENT PLANT | Drinking water | 1 | — | — | No Violation Identified |
| CHEMICAL MARKETING SERVICES-CASPER PLANT | Air | — | — | — | No Violation Identified |
| CITY OF CASPER BALEFILL FACILITY | Water | 1 | — | — | No Violation Identified |
| CITY OF CASPER CENTRAL SERVICE CENTER | Water | 1 | — | — | Violation Identified |
| COAL TECH ELECTRIC | Hazardous waste | — | — | — | No Violation Identified |
| COLLISEUM MOTOR CO. | Hazardous waste | — | — | — | No Violation Identified |
| COMPRESSION LEASING SERVICES | Hazardous waste | — | — | — | No Violation Identified |
| CONNOR COMPANY | Hazardous waste | — | — | — | No Violation Identified |
| COSMOPROF #8797 | Hazardous waste | — | — | — | No Violation Identified |
| CRESCENT ELECTRIC | Hazardous waste | 1 | — | — | No Violation Identified |
| CRIMSON TIRE | Hazardous waste | 1 | — | — | No Violation Identified |
| CUSTOM CONTRACTING SERVICES INC (OUT OF BUSINESS) | Hazardous waste | 1 | — | — | No Violation Identified |
| CUSTOM FIBERGLASS SHOP | — | — | — | — | — |
| CVS PHARMACY #17768 | Hazardous waste | — | — | — | No Violation Identified |
| DAILEY INTERNATIONAL INC | Hazardous waste | — | — | — | No Violation Identified |
| DBA-BENTZ'S SELF SERVE AUTO CENTER | Hazardous waste | — | — | — | No Violation Identified |
| DEFENCE TECHNOLOGY CORP AMERICA | Hazardous waste | — | — | — | No Violation Identified |
| DEFENSE TECHNOLOGIES FEDERAL LABORATORIES | Hazardous waste | 1 | — | — | No Violation Identified |
| DISTRICT 2 MAINTENANCE FACILITIES | Water | 4 | — | — | Violation Identified |
| DIXON BROTHERS CASPER FACILITY | Water | 1 | — | — | Violation Identified |
| DOWELL SCHLUMBERGER INC. | Hazardous waste | — | — | — | No Violation Identified |
| DOYLE JOHNSON'S AUTO REPAIR INC. | Hazardous waste | 1 | — | — | No Violation Identified |
| DRAGON FAB-TECH, LLC | Hazardous waste | 1 | — | — | No Violation Identified |
| DRILLING TOOLS INTERNATIONAL, INC. | Water | — | — | — | No Violation Identified |
| DRIVEN POWER SPORTS FORMERLY COLISEUM MOTOR CO. | Hazardous waste | — | — | — | No Violation Identified |
| EMULSIFIED ASPHALT (CT-884) | Air | — | — | — | No Violation Identified |
| EMULSIFIED CT-514A | Air | — | — | — | No Violation Identified |
| EMULSIFIED CT-807 | Air | — | — | — | No Violation Identified |
| ENBRIDGE ENERGY PARTNERS, L.P. - CASPER STATION | Air, Hazardous waste | 4 | — | — | No Violation Identified |
| ENERGY LABORATORIES INC: RADIOCHEMISTRY LAB | Hazardous waste | — | — | — | No Violation Identified |
| ENERGY LABS | Hazardous waste | — | — | — | No Violation Identified |
| ENERMECH MECHANICAL SERVICES | Water | — | — | — | No Violation Identified |
| ENVIRO-TEST LABORATORIES LLC | Hazardous waste | — | — | — | No Violation Identified |
| EQUILON TRUCKING | Hazardous waste | 1 | — | — | No Violation Identified |
| EVANSVILLE TERMINAL | Water | 1 | — | — | No Violation Identified |
| FEDERAL EXPRESS - ZCAS | Hazardous waste | 1 | — | — | No Violation Identified |
| FEDERAL EXPRESS CORP, CPRR | Hazardous waste | — | — | — | No Violation Identified |
| FEDERAL EXPRESS CORP. - CPRA | Hazardous waste | — | — | — | No Violation Identified |
| FEDEX FREIGHT, INC. CSR | Hazardous waste | 1 | — | — | Violation |
| FIRESTONE TIRE & RUBBER - CASPER | Hazardous waste | — | — | — | No Violation Identified |
| FIRESTONE TIRE & RUBBER COMPLETE AUTO CARE | Hazardous waste | — | — | — | No Violation Identified |
| FISCHER BODY SHOP INC | Hazardous waste | — | — | — | No Violation Identified |
| FMC ENERGY SYSTEMS | Hazardous waste | 1 | — | — | No Violation Identified |
| FOSS MOTORS | Hazardous waste | — | — | — | No Violation Identified |
| FOUST BODY REPAIR | Hazardous waste | — | — | — | No Violation Identified |
| FOX FIELD SERVICE | Hazardous waste | — | — | — | No Violation Identified |
| FREMONT MOTORS, CASPER GMC | Hazardous waste | — | — | — | No Violation Identified |
| FROST CONST (CT-499) | Air | — | — | — | No Violation Identified |
| GARY'S LUBE & EXTRAS, INC | Hazardous waste | — | — | — | No Violation Identified |
| GE OIL & GAS COMPRESSION SYSTEMS | Hazardous waste | — | — | — | No Violation Identified |
| GENEVA WOODS PHARMACY #48543 | Hazardous waste | — | — | — | No Violation Identified |
| GENEVA WOODS PHARMACY AND INFUSION SERVICES #48542 | Hazardous waste | 1 | — | — | No Violation Identified |
| GR WIRELINE LP | Hazardous waste | — | — | — | No Violation Identified |
| GRANITE PEAK FABRICATION | Hazardous waste | 1 | — | — | No Violation Identified |
| GREINER MOTOR CO INC | Hazardous waste | — | — | — | No Violation Identified |
| GREINER MOTOR CO. | Hazardous waste | — | — | — | No Violation Identified |
| GRIEVE PIPELINE CO SOUTH CASPER CREEK | Air | — | — | — | No Violation Identified |
| HALLIBURTON CDC MATERIAL TRUCKING | Hazardous waste | — | — | — | No Violation Identified |
| HAWKS BOOK COMPANY | Hazardous waste | — | — | — | No Violation Identified |
| HF SINCLAIR CASPER REFINING LLC | Water | — | — | — | No Violation Identified |
| HIGH ALTITUDE USA, INC | Hazardous waste | — | — | — | No Violation Identified |
| HOERBIGER COMPRESSION TECHNOLOGY | Hazardous waste | 1 | — | — | No Violation Identified |
| HOMAX OIL SALES, INC. | Water | 1 | — | — | No Violation Identified |
| HOME DEPOT STORE #6001 | Hazardous waste | — | — | — | No Violation Identified |
| HORIZON AUTOMOTIVE | Hazardous waste | 1 | — | — | No Violation Identified |
| HORNBUCKLE DISPOSAL COWDF | Hazardous waste | 1 | — | — | No Violation Identified |
| HOSPITAL WASTE INCINERATOR | Air, Water, Hazardous waste | 4 | 1 | $20,000 | Significant Violation |
| ICO, INC. | Hazardous waste | — | — | — | No Violation Identified |
| INDUSTRIAL LUBRICANTS CO | Hazardous waste | — | — | — | No Violation Identified |
| ITC ELECTRICAL TECH | Hazardous waste | 1 | — | — | No Violation Identified |
| J. W. WILLIAMS, INC. | Hazardous waste | 1 | — | — | No Violation Identified |
| JACK'S TRUCK & EQUIPMENT | Hazardous waste | — | — | — | No Violation Identified |
| JTL GROUP-MADSEN PLANT | Air | — | — | — | No Violation Identified |
| JUDD TIRE SUPPLY | Hazardous waste | — | — | — | No Violation Identified |
| K&L STORAGE | Hazardous waste | — | — | — | No Violation Identified |
| KINDER MORGAN - BOONE DOME | Air | — | — | — | No Violation Identified |
| KMART #4736 | Hazardous waste | — | — | — | No Violation Identified |
| KNIFE RIVER CASPER | Hazardous waste | — | — | — | No Violation Identified |
| KNIFE RIVER PORTABLE CRUSHING & SCREENIN | Air | — | — | — | No Violation Identified |
| LEO'S BEVERLY STREET AUTO REPAIR | Hazardous waste | — | — | — | No Violation Identified |
| LES SCHWAB TIRE CENTER | Hazardous waste | — | — | — | No Violation Identified |
| LES SCHWAB, CASPER | Hazardous waste | 1 | — | — | No Violation Identified |
| LORD OF LORDS LUTHERAN CHURCH | Drinking water | — | — | — | No Violation Identified |
| LP&P PARTNERSHIP REMEDIATION | Water | — | — | — | No Violation Identified |
| MANDROS CONCRETE AND CONSTRUCTION | Hazardous waste | — | — | — | No Violation Identified |
| MC MURRY READY MIX | Hazardous waste | — | — | — | No Violation Identified |
| MCMURRY (CT-521) | Air | — | — | — | No Violation Identified |
| MEDICAL LABORATORY | Hazardous waste | — | — | — | No Violation Identified |
| MEINEKE CAR CARE CENTER | Hazardous waste | 1 | — | — | No Violation Identified |
| MIDAS AUTO SERVICE EXPERTS | Hazardous waste | 1 | — | — | No Violation Identified |
| MOBILE ONSITE OIL | Hazardous waste | 1 | — | — | No Violation Identified |
| NAGEL MOTORS INC | Hazardous waste | — | — | — | No Violation Identified |
| NAPA AUTO CARE CENTER MASTER MECHANIC | Hazardous waste | 1 | — | — | No Violation Identified |
| NATIONAL OILWELL VARCO | Hazardous waste | — | — | — | No Violation Identified |
| NATRONA COUNTY HIGH SCHOOL | Hazardous waste | — | — | — | No Violation Identified |
| NATRONA COUNTY INTERNATIONAL AIRPORT | Air, Water, Drinking water | 1 | — | — | No Violation Identified |
| NATRONA COUNTY SCHOOL DISTRICT | Hazardous waste | — | — | — | No Violation Identified |
| NATURE GAS IMPORT AND EXPORT INC. | — | — | 1 | $84,546 | — |
| NICRO PLATING INC | Hazardous waste | 1 | — | — | No Violation Identified |
| NICRO PLATING INC. | Hazardous waste | — | — | — | No Violation Identified |
| NORWEST BANK WYOMING CASPER N A | Hazardous waste | — | — | — | No Violation Identified |
| NOV DOWNHOLE TOOLS CASPER | Hazardous waste | — | — | — | No Violation Identified |
| NOV TUBOSCOPE MACHINING SERVICES | Water | 1 | — | — | No Violation Identified |
| NOV TUBOSCOPE WELLBORE TECHNOLOGIES | Water | 1 | — | — | No Violation Identified |
| NRG FUELS INC. DBA INTERLINE | Hazardous waste | — | — | — | No Violation Identified |
| O'QUINN ENTERPRIZES | Hazardous waste | — | — | — | No Violation Identified |
| OFTEDAL CONSTRUCTION, INC. | Hazardous waste | — | — | — | No Violation Identified |
| OIL COUNTRY TUBULAR, LLC | Hazardous waste | — | — | — | No Violation Identified |
| OREILLY'S CASPER | Hazardous waste | 1 | — | — | No Violation Identified |
| PARK CITY DRILLING | Hazardous waste | — | — | — | No Violation Identified |
| PAT'S BODY SHOP | Hazardous waste | — | — | — | No Violation Identified |
| PC TRANSPORT | Hazardous waste | — | — | — | No Violation Identified |
| PC TRANSPORT | Hazardous waste | — | — | — | No Violation Identified |
| PERFORMANCE DRILLING SPECIALIST | Hazardous waste | — | — | — | No Violation Identified |
| PETCO #1456 | Hazardous waste | — | — | — | No Violation Identified |
| PETERBILT OF WYOMING | Water, Hazardous waste | 2 | — | — | No Violation Identified |
| PHOENIX DRILLING SERVICES | Hazardous waste | — | — | — | No Violation Identified |
| PILOT THOMAS CASPER FACILITY | Water | — | — | — | No Violation Identified |
| PLATTE PIPE LNE-CASPER TANK FARM | Air | — | — | — | No Violation Identified |
| POWER SERVICES INC. | Water, Hazardous waste | — | — | — | No Violation Identified |
| PRAZMA PAINT AND AUTO BODY INC | Hazardous waste | — | — | — | No Violation Identified |
| QUADCO INC. | Hazardous waste | — | — | — | No Violation Identified |
| QUALAWASH HOLDINGS LLC - CASPER BUILDING | Water, Hazardous waste | 2 | — | — | No Violation Identified |
| R K TRUCKING | Hazardous waste | — | — | — | No Violation Identified |
| REED'S AUTOMOTIVE & CUSTOM EXHAUST | Hazardous waste | — | — | — | No Violation Identified |
| RICK'S ROD AUTO SHOP | Hazardous waste | 1 | — | — | No Violation Identified |
| RISSLER-MCMRY CT-592 | Air | — | — | — | No Violation Identified |
| RIVERSIDE WASTE WATER TREATMENT FACILITY | Water | 4 | — | — | Violation Identified |
| ROCANDA USA INC. | — | — | 1 | — | — |
| ROCKY MOUNTAIN MACHINERY COMPANY | Hazardous waste | — | — | — | No Violation Identified |
| ROCKY MTN BRAKE & SUPPLY | Hazardous waste | 1 | — | — | No Violation Identified |
| RR/C COLLISION CENTER | Hazardous waste | — | — | — | No Violation Identified |
| SACK BROTHERS BODY SHOP | Hazardous waste | — | — | — | No Violation Identified |
| SAFARILAND | Hazardous waste | 1 | — | — | No Violation Identified |
| SAFARILAND/DEFENSE TECHNOLOGY | Hazardous waste | 2 | — | — | No Violation Identified |
| SAFETY-KLEEN SYSTEMS INC | Hazardous waste | — | — | — | No Violation Identified |
| SALLY BEAUTY SUPPLY #10692 | Hazardous waste | 1 | — | — | No Violation Identified |
| SAM H. HOBBS REGIONAL WW FACILITY (PREV. CASPER WWTF) | Water | 7 | — | — | Violation Identified |
| SAM'S CLUB #6425 | Hazardous waste | 1 | — | — | No Violation Identified |
| SCHERER BROS CT-634 | Air | — | — | — | No Violation Identified |
| SCHERER BROTHERS CONSTRUCTION | Air | — | — | — | No Violation Identified |
| SCHLUMBERGER | Water, Hazardous waste | 1 | — | — | No Violation Identified |
| SCHLUMBERGER WELL SERVICES | Hazardous waste | — | — | — | No Violation Identified |
| SCIENTIFIC DRILLING INTERNATIONAL-CASPER FACILITY | Water | 5 | — | — | No Violation Identified |
| SCURLOCK PERMIAN CORPORATION | Hazardous waste | — | — | — | No Violation Identified |
| SHEET METAL SPECIALTIES | Air | — | — | — | No Violation Identified |
| SHERWIN WILLIAMS STORE #3439 | Hazardous waste | — | — | — | No Violation Identified |
| SHERWIN-WILLIAMS CO., #8960 CASPER | Hazardous waste | — | — | — | No Violation Identified |
| SINCLAIR OIL CORP. - CASPER, WYOMING REFINERY | Air, Water, Hazardous waste | 12 | — | — | Significant Violation |
| SMITH'S #185 | Hazardous waste | — | — | — | No Violation Identified |
| STAHLEY AUTO | Hazardous waste | — | — | — | No Violation Identified |
| STAPLES THE OFFICE SUPERSTORE EAST, INC. - STORE 1418 | Hazardous waste | — | — | — | No Violation Identified |
| STATE OF WY: DEPT. OF TRANSPORTATION, CASPER MAINTENANCE SHOP | Hazardous waste | — | — | — | No Violation Identified |
| STEINER CORP / AMERICAN LINEN | Hazardous waste | — | — | — | No Violation Identified |
| SUNRIDGE II APARTMENTS | Air | — | — | — | No Violation Identified |
| SUPPLEMENTAL BARRIER APPROACH - BARRIER WALL FORMER BP FACILITY | Water | 1 | — | — | No Violation Identified |
| TALLGRASS MIDSTREAM LLC - CASPER GAS PLANT & COMPRESSOR STATION | Hazardous waste | — | — | — | No Violation Identified |
| TALLGRASS WATER GREAT PLAINS - CASPER SHOP | Hazardous waste | — | — | — | No Violation Identified |
| TARGET STORE T0164 | Hazardous waste | 1 | — | — | No Violation Identified |
| TERRACE CLEANERS | Hazardous waste | — | — | — | No Violation Identified |
| THE CHOP SHOP | Hazardous waste | — | — | — | No Violation Identified |
| THOMAS CRAWFORD AUTO | Hazardous waste | 1 | — | — | No Violation Identified |
| TM PROPERTY | Hazardous waste | — | — | — | No Violation Identified |
| TOTAL VALVE SOLUTIONS FORMERLY ENERFLEX ENERGY SYSTEMS INC. | Hazardous waste | 1 | — | — | No Violation Identified |
| TRACTOR SUPPLY CASPER | Hazardous waste | — | — | — | No Violation Identified |
| TRI-STATE EQUIPMENT CO | Hazardous waste | — | — | — | No Violation Identified |
| TRUE DRILLING SHOP CASPER | Hazardous waste | — | — | — | No Violation Identified |
| TRUE OIL COMPANY AVIATION | Hazardous waste | — | — | — | No Violation Identified |
| TUBOSCOPE INC ROCKY MOUNTAIN COATING PLANT | Hazardous waste | 1 | — | — | No Violation Identified |
| TUBOSCOPE MACHINE SERVICES | Hazardous waste | — | — | — | No Violation Identified |
| TUBOSCOPE, INSPECTION FACILITY | Hazardous waste | — | — | — | No Violation Identified |
| U.S. DOE NAVAL PETROLEUM RESERVE NO 3 | Air | — | — | — | No Violation Identified |
| UNITED PARCEL SERVICE | Hazardous waste | 1 | 2 | $5,300,000 | No Violation Identified |
| UPDIKE BROTHERS INC. SHOP | Hazardous waste | — | — | — | No Violation Identified |
| UR-ENERGY USA, LOST CREEK ISR-TREATMENT PLANT (UV) | Drinking water | — | — | — | No Violation Identified |
| VALLOUREC TUBE-ALLOY LLC | Hazardous waste | — | — | — | No Violation Identified |
| VEOLIA WTS USA, INC. | Hazardous waste | — | — | — | No Violation Identified |
| VIG'S AUTO BODY | Hazardous waste | 1 | — | — | No Violation Identified |
| VISTA WEST WATER COMPANY | Drinking water | — | — | — | No Violation Identified |
| WALGREENS #7462 | Hazardous waste | — | — | — | No Violation Identified |
| WALGREENS #7601 | Hazardous waste | — | — | — | No Violation Identified |
| WALMART SUPERCENTER #1617 | Hazardous waste | 1 | — | — | No Violation Identified |
| WALMART SUPERCENTER #3778 | Hazardous waste | 1 | — | — | No Violation Identified |
| WARDROBE CLEANERS | Hazardous waste | — | — | — | No Violation Identified |
| WAYNES AUTO AND TRUCK REPAIR | Hazardous waste | — | — | — | No Violation Identified |
| WEATHERFORD U.S. LP | Hazardous waste | — | — | — | No Violation Identified |
| WESTINGHOUSE ELECT | Air | — | — | — | No Violation Identified |
| WHITES MOUNTAIN MOTORS LLC | Hazardous waste | 1 | — | — | No Violation Identified |
| WHITES MOUNTAIN MOTORS LLC, WHITES MOUNTAIN KIA | Hazardous waste | — | — | — | No Violation Identified |
| WRTC TRUCKING | Hazardous waste | — | — | — | No Violation Identified |
| WY DOT- LUSK REST AREA-TREATMENT PLANT | Drinking water | — | — | — | No Violation Identified |
| WY TRANS DEPT DWYER JCT. REST AREA | Drinking water | — | — | — | No Violation Identified |
| WY TRANS DEPT INDEPENDENCE REST AREA | Drinking water | — | — | — | No Violation Identified |
| WY TRANS DEPT ORIN JUNCTION REST AREA | Drinking water | — | — | — | No Violation Identified |
| WY TRANS DEPT SHIRLEY RIM REAT AREA | Drinking water | — | — | — | No Violation Identified |
| WYOCRUSH LLC | Water | 1 | — | — | — |
| WYOMING HIGHWAY DEPARTMENT | Hazardous waste | — | — | — | No Violation Identified |
| WYOMING MACHINERY COMPANY | Hazardous waste | — | — | — | No Violation Identified |
| WYOMING POWER WASH INC | Hazardous waste | — | — | — | No Violation Identified |
| WYOMING REGIONAL AIRCRAFT RESCUE AND FIRE FIGHTING TRAINING FACILITY | Water | — | — | — | No Violation Identified |
| WYOMING RENTS, LLC | Hazardous waste | — | — | — | No Violation Identified |
| WYOMING SERVICENTER INC. | Hazardous waste | — | — | — | No Violation Identified |
| YATES TRUCKING AND IRON | Hazardous waste | — | — | — | No Violation Identified |
Alphabetical order — this site ranks no one. Figures as published by the EPA in ECHO for the last five years. Select a name for identifiers (EPA ID, NPDES, air), program-by-program status and the quarterly history. How to read this.