EPA Air · stack tests by state and year
Air-emissions stack tests in Ohio, 2025
- 2,213Stack 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 Ohio 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 Ohio, 2025
- Monroe County 233
- Belmont County 210
- Lucas County 209
- Harrison County 199
- Carroll County 138
- Jefferson County 121
- Guernsey County 95
- Noble County 84
- Montgomery County 68
- Defiance County 65
- Franklin County 61
- Hamilton County 58
- Medina County 43
- Undetermined County 42
- Butler County 34
- Putnam County 34
- Stark County 33
- Lorain County 31
- Columbiana County 27
- Wood County 26
- Cuyahoga County 25
- Trumbull County 24
- Mahoning County 23
- Perry County 23
- Marion County 20
- Tuscarawas County 20
- Fairfield County 18
- Licking County 17
- Crawford County 16
- Greene County 15
- Union County 15
- Ashtabula County 14
- Darke County 12
- Washington County 12
- Williams County 12
- Allen County 11
- Wayne County 10
- Brown County 9
- Miami County 9
- Summit County 9
- Warren County 8
- Richland County 7
- Clark County 6
- Huron County 6
- Athens County 5
- Muskingum County 5
- Erie County 5
- Van Wert County 4
- Hancock County 4
- Delaware County 3
- Shelby County 3
- Portage County 3
- Coshocton County 3
- Lake County 3
- Jackson County 3
Ohio, other years
Air-emissions stack tests recorded in Ohio, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-03-07 | NSG GLASS NORTH AMERICA, INC. — high-priority violation on file | LUCKEY, Wood, OH | Pass | State |
| 2025-03-07 | NSG GLASS NORTH AMERICA, INC. — high-priority violation on file | LUCKEY, Wood, OH | Pass | State |
| 2025-03-07 | NSG GLASS NORTH AMERICA, INC. — high-priority violation on file | LUCKEY, Wood, OH | Pass | State |
| 2025-03-07 | NSG GLASS NORTH AMERICA, INC. — high-priority violation on file | LUCKEY, Wood, OH | Pass | State |
| 2025-03-07 | NSG GLASS NORTH AMERICA, INC. — high-priority violation on file | LUCKEY, Wood, OH | Pass | State |
| 2025-03-07 | NSG GLASS NORTH AMERICA, INC. — high-priority violation on file | LUCKEY, Wood, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2025-03-06 | ASCENT RESOURCES - UTICA, LLC - HELLER | SMITH, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-03-06 | ASCENT RESOURCES - UTICA, LLC - HELLER | SMITH, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-03-06 | ASCENT RESOURCES - UTICA, LLC - HELLER | SMITH, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-03-06 | XTO ENERGY INC - MILLER UNIT PAD | BELLAIRE, Belmont, OH | Pass | State |
| 2025-03-06 | XTO ENERGY INC - MILLER UNIT PAD | BELLAIRE, Belmont, OH | Pass | State |
| 2025-03-06 | XTO ENERGY INC - MILLER UNIT PAD | BELLAIRE, Belmont, OH | Pass | State |
| 2025-03-06 | RICHARD STALDER PAD 952766 | SARDIS, Monroe, OH | Pass | State |
| 2025-03-06 | RICHARD STALDER PAD 952766 | SARDIS, Monroe, OH | Pass | State |
| 2025-03-06 | RICHARD STALDER PAD 952766 | SARDIS, Monroe, OH | Pass | State |
| 2025-03-06 | PIQUA MATERIALS | PIQUA, Miami, OH | Pass | State |
| 2025-03-05 | ASCENT RESOURCES - UTICA LLC - LEE CLR BL WELLPAD | BRIDGEPORT, Belmont, OH | Pass | State |
| 2025-03-05 | ASCENT RESOURCES - UTICA LLC - LEE CLR BL WELLPAD | BRIDGEPORT, Belmont, OH | Pass | State |
| 2025-03-05 | ASCENT RESOURCES - UTICA LLC - LEE CLR BL WELLPAD | BRIDGEPORT, Belmont, OH | Pass | State |
| 2025-03-05 | ASCENT RESOURCES - UTICA LLC - BAKOS CLR BI | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-03-05 | ASCENT RESOURCES - UTICA LLC - BAKOS CLR BI | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-03-05 | ASCENT RESOURCES - UTICA LLC - BAKOS CLR BI | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-03-05 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2025-03-05 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2025-03-05 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2025-03-05 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2025-03-05 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2025-03-05 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2025-03-05 | PIQUA MATERIALS | PIQUA, Miami, OH | Pass | State |
| 2025-03-05 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-05 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-05 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-05 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-05 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-05 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-05 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-04 | PIQUA MATERIALS | PIQUA, Miami, OH | Pass | State |
| 2025-03-04 | OHIO POWER PARTNERS, LLC | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-03-04 | MIAMI UNIVERSITY | OXFORD, Butler, OH | Pass | State |
| 2025-03-04 | MIAMI UNIVERSITY | OXFORD, Butler, OH | Pass | State |
| 2025-02-27 | TEXAS EASTERN TRANSMISSION, LP ¿ COLERAIN | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-02-27 | TEXAS EASTERN TRANSMISSION, LP ¿ COLERAIN | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-02-27 | TEXAS EASTERN TRANSMISSION, LP ¿ COLERAIN | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2025-02-26 | ENBRIDGE GAS OHIO - AUGUSTA COMPRESSOR STATION | EAST, TOWNSHIP OF, Carroll, OH | Pass | State |
| 2025-02-26 | ENBRIDGE GAS OHIO - AUGUSTA COMPRESSOR STATION | EAST, TOWNSHIP OF, Carroll, OH | Pass | State |
| 2025-02-26 | ENBRIDGE GAS OHIO - AUGUSTA COMPRESSOR STATION | EAST, TOWNSHIP OF, Carroll, OH | Pass | State |
| 2025-02-26 | ENBRIDGE GAS OHIO - AUGUSTA COMPRESSOR STATION | EAST, TOWNSHIP OF, Carroll, OH | Pass | State |
| 2025-02-26 | ENBRIDGE GAS OHIO - AUGUSTA COMPRESSOR STATION | EAST, TOWNSHIP OF, Carroll, OH | Pass | State |
| 2025-02-26 | ENBRIDGE GAS OHIO - AUGUSTA COMPRESSOR STATION | EAST, TOWNSHIP OF, Carroll, OH | Pass | State |
| 2025-02-26 | EOG RESOURCES, INC. - LARKE 34-16-6 PAD | MALVERN, Carroll, OH | Pass | State |
| 2025-02-26 | EOG RESOURCES, INC. - LARKE 34-16-6 PAD | MALVERN, Carroll, OH | Pass | State |
| 2025-02-26 | EOG RESOURCES, INC. - LARKE 34-16-6 PAD | MALVERN, Carroll, OH | Pass | State |
| 2025-02-26 | SALINEVILLE COMPRESSOR STATION | SALINEVILLE, Columbiana, OH | Pass | State |
| 2025-02-26 | SALINEVILLE COMPRESSOR STATION | SALINEVILLE, Columbiana, OH | Pass | State |
| 2025-02-26 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | USA WASTE GENEVA LANDFILL, INC. | GENEVA, Ashtabula, OH | Pass | State |
| 2025-02-25 | AGMET LLC | OAKWOOD, Cuyahoga, OH | Pass | State |
| 2025-02-25 | AGMET LLC | OAKWOOD, Cuyahoga, OH | Pass | State |
| 2025-02-25 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-25 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | CANTON, Stark, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | SPRINGFIELD, TOWNSHIP OF, Mahoning, OH | Pass | State |
| 2025-02-20 | KENT STATE UNIVERSITY HEATING PLANT | KENT, Portage, OH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.