EPA Air · stack tests by state and year
Air-emissions stack tests in Indiana, 2025
- 1,619Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Indiana 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 Indiana, 2025
- Lake County 154
- Marion County 97
- Shelby County 86
- DeKalb County 77
- Wabash County 72
- Posey County 67
- Porter County 54
- Wayne County 53
- Crawford County 47
- Rush County 44
- Allen County 42
- Noble County 40
- Warrick County 40
- Knox County 36
- Huntington County 36
- Howard County 35
- White County 31
- Kosciusko County 30
- Fulton County 29
- Morgan County 26
- Montgomery County 25
- Johnson County 24
- Elkhart County 22
- Clark County 22
- St. Joseph County 20
- Tippecanoe County 20
- Wells County 20
- Cass County 19
- Clinton County 18
- Grant County 17
- Decatur County 16
- Randolph County 16
- Vigo County 16
- Dubois County 15
- LaPorte County 14
- Sullivan County 14
- Henry County 14
- Lawrence County 13
- Fountain County 12
- Jasper County 12
- Steuben County 11
- Marshall County 10
- Bartholomew County 10
- Spencer County 10
- Boone County 10
- Monroe County 9
- Vermillion County 8
- Jennings County 8
- Whitley County 8
- Daviess County 7
- Hendricks County 7
- Pike County 7
- Gibson County 7
- Vanderburgh County 5
- Martin County 5
- Madison County 5
- Putnam County 5
- Hancock County 5
- Jay County 5
- Scott County 4
- Perry County 4
- Franklin County 4
- Dearborn County 4
- Delaware County 3
Indiana, other years
Air-emissions stack tests recorded in Indiana, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-31 | WARRICK NEWCO LLC — high-priority violation on file | NEWBURGH, Warrick, IN | Fail | State |
| 2025-12-31 | WARRICK NEWCO LLC — high-priority violation on file | NEWBURGH, Warrick, IN | Fail | State |
| 2025-12-31 | WARRICK NEWCO LLC — high-priority violation on file | NEWBURGH, Warrick, IN | Fail | State |
| 2025-12-22 | CWA AUTHORITY INC BELMONT ADV WASTEWATER TREATMENT PLANT | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-22 | CWA AUTHORITY INC BELMONT ADV WASTEWATER TREATMENT PLANT | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-22 | CWA AUTHORITY INC BELMONT ADV WASTEWATER TREATMENT PLANT | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-22 | CWA AUTHORITY INC BELMONT ADV WASTEWATER TREATMENT PLANT | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-22 | CWA AUTHORITY INC BELMONT ADV WASTEWATER TREATMENT PLANT | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-22 | CWA AUTHORITY INC BELMONT ADV WASTEWATER TREATMENT PLANT | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-22 | INDIANA MICHIGAN POWER COMPANY DBA AEP ROCKPORT PLANT | ROCKPORT, Spencer, IN | Pass | State |
| 2025-12-22 | INDIANA MICHIGAN POWER COMPANY DBA AEP ROCKPORT PLANT | ROCKPORT, Spencer, IN | Pass | State |
| 2025-12-19 | ANR PIPELINE COMPANY ST JOHN COMPRESSOR STATION | SAINT JOHN, Lake, IN | Pass | State |
| 2025-12-19 | ANR PIPELINE COMPANY ST JOHN COMPRESSOR STATION | SAINT JOHN, Lake, IN | Pass | State |
| 2025-12-19 | ANR PIPELINE COMPANY ST JOHN COMPRESSOR STATION | SAINT JOHN, Lake, IN | Pass | State |
| 2025-12-19 | ADVANCED MAGNESIUM ALLOYS CORPORATION — high-priority violation on file | ANDERSON, Madison, IN | Pass | State |
| 2025-12-18 | US ENERGY INDIANAPOLIS TERMINAL | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-18 | TATE & LYLE SOLUTIONS USA LLC — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Fail | State |
| 2025-12-17 | CWA AUTHORITY INC BELMONT ADV WASTEWATER TREATMENT PLANT | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-12-16 | HARRISON STEEL CASTINGS COMPANY — high-priority violation on file | ATTICA, Fountain, IN | Pass | State |
| 2025-12-15 | HARRISON STEEL CASTINGS COMPANY — high-priority violation on file | ATTICA, Fountain, IN | Pass | State |
| 2025-12-12 | INDIANA MUNICIPAL POWER AGENCY-WHITEWATER VALLEY GENERATING | RICHMOND, Wayne, IN | Pass | State |
| 2025-12-12 | INDIANA MUNICIPAL POWER AGENCY-WHITEWATER VALLEY GENERATING | RICHMOND, Wayne, IN | Pass | State |
| 2025-12-11 | ARDAGH GLASS INCORPORATED | DUNKIRK, Jay, IN | Pass | State |
| 2025-12-11 | ARDAGH GLASS INCORPORATED | DUNKIRK, Jay, IN | Pass | State |
| 2025-12-11 | ARDAGH GLASS INCORPORATED | DUNKIRK, Jay, IN | Pass | State |
| 2025-12-11 | ARDAGH GLASS INCORPORATED | DUNKIRK, Jay, IN | Pass | State |
| 2025-12-11 | ANR PIPELINE COMPANY LAGRANGE COMPRESSOR STATION — high-priority violation on file | LAGRANGE, LaGrange, IN | Pass | State |
| 2025-12-10 | ANR PIPELINE COMPANY SULPHUR SPRINGS COMPRESSOR STATION | SULPHUR SPRINGS, Henry, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-08 | BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file | MORRISTOWN, Shelby, IN | Pass | State |
| 2025-12-08 | BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file | MORRISTOWN, Shelby, IN | Pass | State |
| 2025-12-08 | BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file | MORRISTOWN, Shelby, IN | Pass | State |
| 2025-12-04 | NIKKEI MC ALUMINUM AMERICA INC | COLUMBUS, Bartholomew, IN | Pass | State |
| 2025-12-04 | US STEEL CORPORATION GARY WORKS — high-priority violation on file | GARY, Lake, IN | Pass | State |
| 2025-12-04 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-12-04 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-12-04 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-12-04 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-11-26 | VOSS CLARK DBA PGP CORP | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-11-26 | VOSS CLARK DBA PGP CORP | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-11-26 | VOSS CLARK DBA PGP CORP | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-11-26 | VOSS CLARK DBA PGP CORP | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-11-26 | VOSS CLARK DBA PGP CORP | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-11-25 | ANR PIPELINE COMPANY SHELBYVILLE COMPRESSOR STATION | SHELBYVILLE, Shelby, IN | Pass | State |
| 2025-11-25 | ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file | NEWBURGH, Warrick, IN | Pass | State |
| 2025-11-25 | BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file | REYNOLDS, White, IN | Pass | State |
| 2025-11-25 | BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file | REYNOLDS, White, IN | Pass | State |
| 2025-11-25 | BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file | REYNOLDS, White, IN | Pass | State |
| 2025-11-25 | BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file | REYNOLDS, White, IN | Pass | State |
| 2025-11-25 | BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file | REYNOLDS, White, IN | Pass | State |
| 2025-11-25 | BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file | REYNOLDS, White, IN | Pass | State |
| 2025-11-24 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2025-11-24 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2025-11-21 | STEEL DYNAMICS, INC. STRUCTURAL & RAIL DIVISION — high-priority violation on file | COLUMBIA CITY, Whitley, IN | Fail | State |
| 2025-11-20 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | NEW HAVEN, Allen, IN | Pass | State |
| 2025-11-20 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | NEW HAVEN, Allen, IN | Pass | State |
| 2025-11-20 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | NEW HAVEN, Allen, IN | Pass | State |
| 2025-11-20 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | NEW HAVEN, Allen, IN | Pass | State |
| 2025-11-20 | GREDE LLC — high-priority violation on file | NEW CASTLE, Henry, IN | Pass | State |
| 2025-11-20 | CENTURION CONTAINER LLC | GARY, Lake, IN | Pass | State |
| 2025-11-20 | BCI SOLUTIONS INCORPORATED | BREMEN, Marshall, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-20 | GARTLAND FOUNDRY CO INC — high-priority violation on file | TERRE HAUTE, Vigo, IN | Pass | State |
| 2025-11-19 | METAL SOURCE LLC — high-priority violation on file | HUNTINGTON, Huntington, IN | Pass | State |
| 2025-11-19 | METAL SOURCE LLC — high-priority violation on file | HUNTINGTON, Huntington, IN | Pass | State |
| 2025-11-19 | METAL SOURCE LLC — high-priority violation on file | HUNTINGTON, Huntington, IN | Pass | State |
| 2025-11-19 | SCEPTER INCORPORATED | BICKNELL, Knox, IN | Pass | State |
| 2025-11-19 | SCEPTER INCORPORATED | BICKNELL, Knox, IN | Pass | State |
| 2025-11-18 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-11-18 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-11-18 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-11-18 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-11-18 | CLEVELAND-CLIFFS BURNS HARBOR LLC — high-priority violation on file | BURNS HARBOR, Porter, IN | Pass | State |
| 2025-11-18 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Pass | State |
| 2025-11-18 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Pass | State |
| 2025-11-13 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
| 2025-11-13 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
| 2025-11-13 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
| 2025-11-13 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
| 2025-11-12 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2025-11-12 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2025-11-12 | COUNTRYMARK REFINING & LOGISTICS LLC | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-11-12 | COUNTRYMARK REFINING & LOGISTICS LLC | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-11-11 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
| 2025-11-11 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
| 2025-11-11 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
| 2025-11-11 | LOUIS DREYFUS COMPANY AGRICULTURAL PRODUCTS LLC | CLAYPOOL, Kosciusko, IN | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.