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 |
|---|---|---|---|---|
| 2025-06-12 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-12 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-12 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-12 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-12 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-12 | JELD WEN INCORPORATED — high-priority violation on file | LIGONIER, Noble, IN | Pass | State |
| 2025-06-12 | JELD WEN INCORPORATED — high-priority violation on file | LIGONIER, Noble, IN | Fail | State |
| 2025-06-11 | U S STEEL MIDWEST PLANT | PORTAGE, Porter, IN | Pass | State |
| 2025-06-11 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-11 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-11 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-11 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-11 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Fail | State |
| 2025-06-11 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Pass | State |
| 2025-06-11 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Fail | State |
| 2025-06-11 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Pass | State |
| 2025-06-10 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-10 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-10 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2025-06-10 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-06-10 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-06-10 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-06-10 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-10 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2025-06-10 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2025-06-10 | U S STEEL MIDWEST PLANT | PORTAGE, Porter, IN | Pass | State |
| 2025-06-10 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-10 | METAL SOURCE LLC | WABASH, Wabash, IN | Pass | State |
| 2025-06-10 | METAL SOURCE LLC | WABASH, Wabash, IN | Pass | State |
| 2025-06-10 | METAL SOURCE LLC | WABASH, Wabash, IN | Pass | State |
| 2025-06-10 | METAL SOURCE LLC | WABASH, Wabash, IN | Pass | State |
| 2025-06-10 | METAL SOURCE LLC | WABASH, Wabash, IN | Pass | State |
| 2025-06-09 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-09 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-09 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-09 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-09 | TERRA SUPREME BATTERY LLC | ALBION, Noble, IN | Pass | State |
| 2025-06-09 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-09 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-09 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-09 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-09 | BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-06-06 | ROCKIES EXPRESS PIPELINE LLC - ST PAUL COMPRESSOR STATION | SAINT PAUL, Decatur, IN | Pass | State |
| 2025-06-06 | ROCKIES EXPRESS PIPELINE LLC - ST PAUL COMPRESSOR STATION | SAINT PAUL, Decatur, IN | Pass | State |
| 2025-06-06 | ROCKIES EXPRESS PIPELINE LLC - ST PAUL COMPRESSOR STATION | SAINT PAUL, Decatur, IN | Pass | State |
| 2025-06-06 | CITIZENS GAS JOHNSTOWN COMPRESSOR STATION | WORTHINGTON, Greene, IN | Pass | State |
| 2025-06-06 | CITIZENS GAS JOHNSTOWN COMPRESSOR STATION | WORTHINGTON, Greene, IN | Pass | State |
| 2025-06-06 | GREDE LLC — high-priority violation on file | NEW CASTLE, Henry, IN | Pass | State |
| 2025-06-05 | CITIZENS WATER WHITE RIVER NORTH — high-priority violation on file | CARMEL, Hamilton, IN | Pass | State |
| 2025-06-05 | CITIZENS WATER WHITE RIVER NORTH — high-priority violation on file | CARMEL, Hamilton, IN | Pass | State |
| 2025-06-05 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Pass | State |
| 2025-06-05 | INTAT PRECISION INCORPORATED — high-priority violation on file | RUSHVILLE, Rush, IN | Pass | State |
| 2025-06-05 | CLEVELAND-CLIFFS STEEL CORPORATION, ROCKPORT WORKS | ROCKPORT, Spencer, IN | Pass | State |
| 2025-06-04 | ECO SERVICES OPERATIONS CORP | HAMMOND, Lake, IN | Pass | State |
| 2025-06-04 | CITIZENS WATER WHITE RIVER RIVERSIDE | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-06-03 | CITIZENS WATER WHITE RIVER RIVERSIDE | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-06-03 | CITIZENS WATER WHITE RIVER RIVERSIDE | INDIANAPOLIS, Marion, IN | Pass | State |
| 2025-06-03 | CLEVELAND-CLIFFS STEEL CORPORATION, ROCKPORT WORKS | ROCKPORT, Spencer, IN | Pass | State |
| 2025-06-02 | ZIMMER BIOMET INC. — high-priority violation on file | WARSAW, Kosciusko, IN | Fail | State |
| 2025-06-02 | ZIMMER BIOMET INC. — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2025-06-02 | ZIMMER BIOMET INC. — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2025-06-02 | ZIMMER BIOMET INC. — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2025-05-30 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-30 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-30 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-30 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-30 | CLEVELAND CLIFFS NEW CARLISLE LLC — high-priority violation on file | NEW CARLISLE, St. Joseph, IN | Pass | State |
| 2025-05-30 | SIGECO - FB CULLEY GENERATING STATION | NEWBURGH, Warrick, IN | Pass | State |
| 2025-05-29 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-05-29 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-05-29 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2025-05-29 | CLEVELAND CLIFFS NEW CARLISLE LLC — high-priority violation on file | NEW CARLISLE, St. Joseph, IN | Pass | State |
| 2025-05-29 | BROOKS CONSTRUCTION COMPANY INCORPORATED | HOAGLAND, Allen, IN | Pass | State |
| 2025-05-29 | BROOKS CONSTRUCTION COMPANY INCORPORATED | HOAGLAND, Allen, IN | Pass | State |
| 2025-05-29 | BROOKS CONSTRUCTION COMPANY INCORPORATED | HOAGLAND, Allen, IN | Pass | State |
| 2025-05-29 | BROOKS CONSTRUCTION COMPANY INCORPORATED | HOAGLAND, Allen, IN | Pass | State |
| 2025-05-29 | MILESTONE CONTRACTORS LP | VALPARAISO, Porter, IN | Pass | State |
| 2025-05-29 | MILESTONE CONTRACTORS LP | VALPARAISO, Porter, IN | Pass | State |
| 2025-05-29 | MILESTONE CONTRACTORS LP | VALPARAISO, Porter, IN | Pass | State |
| 2025-05-29 | MILESTONE CONTRACTORS LP | VALPARAISO, Porter, IN | Pass | State |
| 2025-05-28 | C & W FABRICATION DBA GF MUNICH WELDING | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-05-28 | C & W FABRICATION DBA GF MUNICH WELDING | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-05-28 | C & W FABRICATION DBA GF MUNICH WELDING | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-05-28 | C & W FABRICATION DBA GF MUNICH WELDING | JEFFERSONVILLE, Clark, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
| 2025-05-28 | IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file | RENSSELAER, Jasper, IN | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.