EPA Air · violations by state and year
High-priority air violations in Wisconsin, 2025
- 358Violations
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity. Every violation below was recorded against a source in Wisconsin during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Wisconsin, 2025
- Marathon County 41
- Ozaukee County 40
- Douglas County 24
- La Crosse County 22
- Monroe County 19
- Richland County 18
- Menominee County 16
- Juneau County 16
- Manitowoc County 13
- Sheboygan County 12
- Waushara County 11
- Fond du Lac County 11
- Taylor County 10
- Green County 9
- Waukesha County 9
- Chippewa County 8
- Barron County 8
- Kewaunee County 7
- Price County 7
- Rusk County 6
- Brown County 6
- Eau Claire County 4
- Washburn County 4
- Dunn County 4
- Dane County 3
- Undetermined County 3
- Waupaca County 3
- Kenosha County 3
- Lincoln County 3
Wisconsin, other years
High-priority air violations recorded in Wisconsin, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-08-25 | KOLBE & KOLBE MILLWORK CO INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-08-25 | KOLBE & KOLBE MILLWORK CO INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-08-20 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-08-20 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-08-20 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-08-20 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-08-20 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-08-20 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-08-20 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-08-12 | GPI CORP | SCHOFIELD, Marathon, WI | Earliest FRV determination | State |
| 2025-08-12 | GPI CORP | SCHOFIELD, Marathon, WI | Earliest FRV determination | State |
| 2025-08-12 | GPI CORP | SCHOFIELD, Marathon, WI | Earliest FRV determination | State |
| 2025-08-12 | GPI CORP | SCHOFIELD, Marathon, WI | Earliest FRV determination | State |
| 2025-08-12 | GPI CORP | SCHOFIELD, Marathon, WI | HPV day-zero determination | State |
| 2025-08-12 | GPI CORP | SCHOFIELD, Marathon, WI | Earliest FRV determination | State |
| 2025-08-12 | GPI CORP | SCHOFIELD, Marathon, WI | HPV day-zero determination | State |
| 2025-08-12 | ALTER TRADING FKA MILLER COMPRESSING CO | MILWAUKEE, Milwaukee, WI | Earliest FRV determination | State |
| 2025-08-08 | DIDION MILLING INC. | CAMBRIA, Columbia, WI | Earliest FRV determination | State |
| 2025-08-07 | ASSOCIATED MILK PRODUCERS INC (AMPI) - JIM FALLS | JIM FALLS, Chippewa, WI | Earliest FRV determination | State |
| 2025-08-07 | ASSOCIATED MILK PRODUCERS INC (AMPI) - JIM FALLS | JIM FALLS, Chippewa, WI | Earliest FRV determination | State |
| 2025-08-05 | HARLEY DAVIDSON MOTOR COMPANY-TOMAHAWK S | TOMAHAWK, Lincoln, WI | Earliest FRV determination | State |
| 2025-08-04 | 3M PRAIRIE DU CHIEN BUILDING 50 | PRAIRIE DU CHIEN, Crawford, WI | Earliest FRV determination | State |
| 2025-08-04 | 3M PRAIRIE DU CHIEN BUILDING 50 | PRAIRIE DU CHIEN, Crawford, WI | Earliest FRV determination | State |
| 2025-07-31 | MICROSOFT CORPORATION - MKE 3B DATA CENTER | MOUNT PLEASANT, Richland, WI | Earliest FRV determination | State |
| 2025-07-31 | MICROSOFT CORPORATION - MKE 3B DATA CENTER | MOUNT PLEASANT, Richland, WI | Earliest FRV determination | State |
| 2025-07-31 | MICROSOFT CORPORATION - MKE 3B DATA CENTER | MOUNT PLEASANT, Richland, WI | Earliest FRV determination | State |
| 2025-07-31 | MICROSOFT CORPORATION - MKE 3B DATA CENTER | MOUNT PLEASANT, Richland, WI | Earliest FRV determination | State |
| 2025-07-31 | MICROSOFT CORPORATION - MKE 3B DATA CENTER | MOUNT PLEASANT, Richland, WI | Earliest FRV determination | State |
| 2025-07-31 | MICROSOFT CORPORATION - MKE 3B DATA CENTER | MOUNT PLEASANT, Richland, WI | Earliest FRV determination | State |
| 2025-07-30 | NORTHERN STATES PWR CO WHEATON GEN STA | EAU CLAIRE, Chippewa, WI | Earliest FRV determination | State |
| 2025-07-30 | NORTHERN STATES PWR CO WHEATON GEN STA | EAU CLAIRE, Chippewa, WI | Earliest FRV determination | State |
| 2025-07-30 | WOOD ECOLOGY INC | EAU CLAIRE, Eau Claire, WI | Earliest FRV determination | State |
| 2025-07-30 | WOOD ECOLOGY INC | EAU CLAIRE, Eau Claire, WI | Earliest FRV determination | State |
| 2025-07-30 | WOOD ECOLOGY INC | EAU CLAIRE, Eau Claire, WI | Earliest FRV determination | State |
| 2025-07-30 | WOOD ECOLOGY INC | EAU CLAIRE, Eau Claire, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-30 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Earliest FRV determination | State |
| 2025-07-29 | DISCOVERY ENERGY LLC | MOSEL, Taylor, WI | Earliest FRV determination | State |
| 2025-07-29 | DISCOVERY ENERGY LLC | MOSEL, Taylor, WI | Earliest FRV determination | State |
| 2025-07-28 | GPI CORP | SCHOFIELD, Marathon, WI | Earliest FRV determination | State |
| 2025-07-24 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | COMBINED LOCKS, Ozaukee, WI | HPV day-zero determination | State |
| 2025-07-17 | CNG GREEN BAY — high-priority violation on file | GREEN BAY, Brown, WI | HPV day-zero determination | State |
| 2025-07-17 | 3M - MENOMONIE PLANT — high-priority violation on file | MENOMONIE, Dunn, WI | Earliest FRV determination | State |
| 2025-07-17 | 3M - MENOMONIE PLANT — high-priority violation on file | MENOMONIE, Dunn, WI | Earliest FRV determination | State |
| 2025-07-17 | 3M - MENOMONIE PLANT — high-priority violation on file | MENOMONIE, Dunn, WI | Earliest FRV determination | State |
| 2025-07-17 | 3M - MENOMONIE PLANT — high-priority violation on file | MENOMONIE, Dunn, WI | Earliest FRV determination | State |
| 2025-07-15 | DE PERE CABINET INC | DE PERE, Brown, WI | Earliest FRV determination | State |
| 2025-07-15 | DAYBREAK FOODS COLDSPRING LOCATION | PALMYRA, Jefferson, WI | Earliest FRV determination | State |
| 2025-07-15 | LINCOLN WOOD PRODUCTS | MERRILL, Lincoln, WI | Earliest FRV determination | State |
| 2025-07-15 | CARMEUSE LIME AND STONE - ROCKWELL OPERATION — high-priority violation on file | MANITOWOC, Manitowoc, WI | Earliest FRV determination | State |
| 2025-07-15 | IMPERIAL INDUSTRIES, INC. | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-07-15 | ARCLIN SURFACES INC | HAYWARD, Shawano, WI | Earliest FRV determination | State |
| 2025-07-15 | LAKE AREA DISPOSAL LANDFILL | SARONA, Washburn, WI | Earliest FRV determination | State |
| 2025-07-15 | IBP SOLUTIONS US LLC | MARSHFIELD, Menominee, WI | Earliest FRV determination | State |
| 2025-07-14 | GUNDERSEN HEALTH SYSTEM | LA CROSSE, La Crosse, WI | Earliest FRV determination | State |
| 2025-07-11 | XCEL ENERGY - FRENCH ISLAND GENERATING PLANT | LA CROSSE, La Crosse, WI | Earliest FRV determination | State |
| 2025-07-11 | XCEL ENERGY - FRENCH ISLAND GENERATING PLANT | LA CROSSE, La Crosse, WI | Earliest FRV determination | State |
| 2025-07-11 | XCEL ENERGY - FRENCH ISLAND GENERATING PLANT | LA CROSSE, La Crosse, WI | Earliest FRV determination | State |
| 2025-07-10 | PLYMOUTH FOAM INCORPORATED — high-priority violation on file | PLYMOUTH, Sheboygan, WI | Earliest FRV determination | State |
| 2025-07-10 | PLYMOUTH FOAM INCORPORATED — high-priority violation on file | PLYMOUTH, Sheboygan, WI | Earliest FRV determination | State |
| 2025-07-08 | GENERAC POWER SYSTEMS-WAUKESHA | WAUKESHA, Waupaca, WI | Earliest FRV determination | State |
| 2025-07-03 | CALUMET RENEWABLE ENERGY, LLC - PAGELS PONDEROSA FACILITY | KEWAUNEE, Kewaunee, WI | Earliest FRV determination | State |
| 2025-07-03 | CALUMET RENEWABLE ENERGY, LLC - PAGELS PONDEROSA FACILITY | KEWAUNEE, Kewaunee, WI | Earliest FRV determination | State |
| 2025-07-03 | CALUMET RENEWABLE ENERGY - DAIRY DREAMS FACILITY — high-priority violation on file | CASCO, Kewaunee, WI | Earliest FRV determination | State |
| 2025-07-03 | CALUMET RENEWABLE ENERGY - DAIRY DREAMS FACILITY — high-priority violation on file | CASCO, Kewaunee, WI | Earliest FRV determination | State |
| 2025-07-03 | CALUMET RENEWABLE ENERGY - DAIRY DREAMS FACILITY — high-priority violation on file | CASCO, Kewaunee, WI | Earliest FRV determination | State |
| 2025-07-03 | CALUMET RENEWABLE ENERGY - DAIRY DREAMS FACILITY — high-priority violation on file | CASCO, Kewaunee, WI | Earliest FRV determination | State |
| 2025-07-03 | CALUMET RENEWABLE ENERGY - DAIRY DREAMS FACILITY — high-priority violation on file | CASCO, Kewaunee, WI | Earliest FRV determination | State |
| 2025-06-30 | VERITAS STEEL LLC | EAU CLAIRE, Chippewa, WI | Earliest FRV determination | State |
| 2025-06-30 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-06-30 | WAUSAU TILE INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-06-30 | WAUSAU TILE INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-06-30 | WAUSAU TILE INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-06-30 | WAUSAU TILE INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-06-30 | WAUSAU TILE INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-06-30 | WAUSAU TILE INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-06-30 | WAUSAU TILE INC | WAUSAU, Marathon, WI | Earliest FRV determination | State |
| 2025-06-26 | PROAMPAC | WRIGHTSTOWN, Brown, WI | Earliest FRV determination | State |
| 2025-06-24 | MULLINS CHEESE INC — high-priority violation on file | MOSINEE, Marathon, WI | Earliest FRV determination | State |
| 2025-06-24 | MULLINS CHEESE INC — high-priority violation on file | MOSINEE, Marathon, WI | Earliest FRV determination | State |
| 2025-06-16 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Earliest FRV determination | State |
| 2025-06-11 | LA CROSSE COUNTY SOLID WASTE MANAGEMENT FACILITY | LA CROSSE, La Crosse, WI | Earliest FRV determination | State |
| 2025-06-10 | WILLMAN INDUSTRIES | CEDAR GROVE, Sheboygan, WI | Earliest FRV determination | State |
| 2025-06-10 | WILLMAN INDUSTRIES | CEDAR GROVE, Sheboygan, WI | Earliest FRV determination | State |
| 2025-06-10 | WILLMAN INDUSTRIES | CEDAR GROVE, Sheboygan, WI | Earliest FRV determination | State |
| 2025-06-02 | PROAMPAC | WRIGHTSTOWN, Brown, WI | Earliest FRV determination | State |
| 2025-06-02 | PROAMPAC | WRIGHTSTOWN, Brown, WI | Earliest FRV determination | State |
| 2025-06-02 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | COMBINED LOCKS, Ozaukee, WI | Earliest FRV determination | State |
| 2025-06-02 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | COMBINED LOCKS, Ozaukee, WI | Earliest FRV determination | State |
| 2025-06-02 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | COMBINED LOCKS, Ozaukee, WI | Earliest FRV determination | State |
| 2025-06-02 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | COMBINED LOCKS, Ozaukee, WI | HPV day-zero determination | State |
| 2025-06-02 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | COMBINED LOCKS, Ozaukee, WI | HPV day-zero determination | State |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.