| 3M - MENOMONIE PLANT | Major source | Yes |
| 3M CO - GREYSTONE | Major source | Yes |
| 3M CO WAUSAU PLT | Major source | Yes |
| ADVANCED COATING, INC. | Major source | Yes |
| AHLSTROM MOSINEE, LLC | Major source | Yes |
| AHLSTROM NA SPECIALTY SOLUTIONS LLC | Major source | Yes |
| AHLSTROM STEVENS POINT LLC | Major source | Yes |
| AMCOR PACKAGING INC, - LANCASTER | Major source | Yes |
| AMCOR WISCONSIN, LLC - BOSCOBEL | Major source | Yes |
| AMERY TECHNICAL PRODUCTS INC (AMTEC) | Synthetic minor source | Yes |
| APOGEE WAUSAU GROUP INC LINETEC DIVISION | Major source | Yes |
| APPLETON GRP LLC | Major source | Yes |
| ARDAGH GLASS INC | Major source | Yes |
| ASHLEY FURNITURE INDUSTRIES LLC | Major source | Yes |
| BADGER STATE ETHANOL, INC. | Major source | Yes |
| BARRON COUNTY WASTE TO ENERGY AND RECYCLING FACILITY | Major source | Yes |
| BLUE DIAMOND PROPPANTS - CLINTON PLANT | Synthetic minor source | Yes |
| BRIESS INDUSTRIES INC | Major source | Yes |
| BROAN NUTONE LLC | Synthetic minor source | Yes |
| BROWNTOWN FOUNDRY LLC | Major source | Yes |
| BRP US INC | Major source | Yes |
| C-P FLEXIBLE PACKAGING | Major source | Yes |
| CALUMET RENEWABLE ENERGY - DAIRY DREAMS FACILITY | Synthetic minor source | Yes |
| CARFAIR COMPOSITES USA INC | Major source | Yes |
| CARMEUSE LIME AND STONE - ROCKWELL OPERATION | Major source | Yes |
| CITY BREWING CO INC | Major source | Yes |
| CLCM OAK CREEK | Major source | Yes |
| CNG GREEN BAY | Synthetic minor source | Yes |
| CNH INDUSTRIAL RACINE PLANT | Synthetic minor source | Yes |
| COATING PLACE LLC | Major source | Yes |
| COVIA ENERGY LLC | Synthetic minor source | Yes |
| CRYSTAL FINISHING SYSTEMS INC - MOSINEE | Synthetic minor source | Yes |
| DAIRYLAND BIOGAS - AGRA RNG-GTL PROJECT | Synthetic minor source | Yes |
| DOMTAR AW LLC | Major source | Yes |
| EATON COOPER POWER SYSTEMS LLC | Synthetic minor source | Yes |
| ECC CORROSION INC | Major source | Yes |
| FULL CYCLE ENTERPRISES LLC | Synthetic minor source | Yes |
| GRAYMONT (WI) LLC | Major source | Yes |
| GRAYMONT WESTERN LIME INC | Major source | Yes |
| GREAT LAKES VENEER INC | Major source | Yes |
| GREDE LLC - LIBERTY | Major source | Yes |
| H & S MANUFACTURING COMPANY INC | Emissions classification unknown | Yes |
| HOLSUM DAIRY - ELM | Synthetic minor source | Yes |
| HYDRITE CHEMICAL CO. | Major source | Yes |
| INX INTERNATIONAL INK CO | Synthetic minor source | Yes |
| KERRY INC | Major source | Yes |
| KERRY ROTHSCHILD | Minor source | Yes |
| MADISON GAS AND ELECTRIC COMPANY - WEST MARINETTE FACILITY | Major source | Yes |
| MARINETTE MARINE CORP | Synthetic minor source | Yes |
| MARTH WOOD SHAVINGS SUPPLY INC | Major source | Yes |
| MCCAIN FOODS USA | Major source | Yes |
| MCKINLEY PAPER AND PACKAGING COMPANY | Major source | Yes |
| MCMILLAN ELECTRIC CO | Synthetic minor source | Yes |
| MID-AMERICA STEEL DRUM COMPANY-CLCM | Synthetic minor source | Yes |
| MULLINS CHEESE INC | Major source | Yes |
| ND WQC LLC | Minor source | Yes |
| NEENAH FOUNDRY COMPANY - NEENAH OPERATIONS (W2179) | Major source | Yes |
| NICOLET HARDWOODS CORP | Minor source | Yes |
| PATTISON SAND PRAIRIE DU CHIEN RAIL LOAD-OUT | Minor source | Yes |
| PIERCE MFG INC | Major source | Yes |
| PLYMOUTH FOAM INCORPORATED | Major source | Yes |
| PPG INDUSTRIES | Major source | Yes |
| PROAMPAC MENASHA | Major source | Yes |
| RACINE WASTEWATER TREATMENT FACILITY | Major source | Yes |
| ROCKGEN ENERGY CENTER | Major source | Yes |
| RUBI HOLDING COMPANY, LLC | Synthetic minor source | Yes |
| SANIMAX USA LLC | Synthetic minor source | Yes |
| SENSORYEFFECTS POWDER SYSTEMS (FORMERLY | Synthetic minor source | Yes |
| SHEBOYGAN PAINT CO. | Major source | Yes |
| SILGAN CONTAINERS MFG CORP - PLOVER | Major source | Yes |
| SMART SAND INC | Major source | Yes |
| SUPERIOR REFINING COMPANY LLC | Major source | Yes |
| T J HALE COMPANY LLC | Major source | Yes |
| UNIROYAL GLOBAL ENGINEERED PRODUCTS LLC | Major source | Yes |
| UNITED ENERGY NECEDAH LLC | Major source | Yes |
| UNITED WISCONSIN GRAIN PRODUCERS, LLC | Major source | Yes |
| VIRESCO TURTLE LAKE | Synthetic minor source | Yes |
| VORTEQ COIL FINISHERS | Synthetic minor source | Yes |
| WE ENERGIES-OAK CREEK POWER PLANT | Major source | Yes |
| WEINBRENNER SHOE CO | Emissions classification unknown | Yes |
| WHITEHAVEN SILICA, LLC | Synthetic minor source | Yes |
| WISCONSIN ALUMINUM FOUNDRY | Synthetic minor source | Yes |
| WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA | Major source | Yes |
| WISCONSIN PROPPANTS - ALMA CENTER PLANT | Synthetic minor source | Yes |
| WPL - NEENAH GENERATING FACILITY | Major source | Yes |
| WRR ENVIRONMENTAL SERVICES CO INC | Major source | Yes |