EPA Air · by state
Air-emissions sources in Ohio
- 7,478Facilities
By emissions classification in Ohio
High-priority violations in Ohio
180 sources in Ohio carry a current high-priority Clean Air Act violation.
Counties in Ohio
- Adams County 8
- Allen County 77
- Ashland County 28
- Ashtabula County 91
- Athens County 10
- Auglaize County 28
- Belmont County 221
- Brown County 13
- Butler County 173
- Carroll County 100
- Champaign County 25
- Clark County 103
- Clermont County 69
- Clinton County 33
- Columbiana County 79
- Coshocton County 32
- Crawford County 28
- Cuyahoga County 1,029
- Darke County 35
- Defiance County 16
- Delaware County 22
- Erie County 63
- Fairfield County 25
- Fayette County 18
- Franklin County 229
- Fulton County 29
- Gallia County 15
- Geauga County 62
- Greene County 91
- Guernsey County 128
- Hamilton County 376
- Hancock County 39
- Hardin County 14
- Harrison County 147
- Henry County 23
- Highland County 14
- Hocking County 12
- Holmes County 53
- Huron County 31
- Jackson County 21
- Jefferson County 103
- Knox County 26
- Lake County 155
- Lawrence County 22
- Licking County 48
- Logan County 21
- Lorain County 202
- Lucas County 192
- Madison County 9
- Mahoning County 122
- Marion County 32
- Medina County 174
- Meigs County 15
- Mercer County 17
- Miami County 99
- Monroe County 107
- Montgomery County 347
- Morgan County 5
- Morrow County 12
- Muskingum County 54
- Noble County 38
- Ottawa County 20
- Paulding County 14
- Perry County 17
- Pickaway County 24
- Pike County 19
- Portage County 172
- Preble County 29
- Putnam County 24
- Richland County 83
- Ross County 20
- Sandusky County 41
- Scioto County 19
- Seneca County 31
- Shelby County 36
- Stark County 298
- Summit County 545
- Trumbull County 108
- Tuscarawas County 96
- Undetermined County 39
- Union County 24
- Van Wert County 16
- Vinton County 6
- Warren County 79
- Washington County 58
- Wayne County 98
- Williams County 33
- Wood County 92
- Wyandot County 27
Industries in Ohio
Sources are grouped by the first industry code on the facility record.
- Gasoline stations (NAICS 4471) 1,332
- Oil and gas extraction (NAICS 2111) 628
- Mining and quarrying (NAICS 2123) 348
- NAICS 9999 242
- Repair and maintenance (NAICS 8111) 241
- Petroleum and coal products manufacturing (NAICS 3241) 233
- Fabricated metal product manufacturing (NAICS 3328) 202
- Nonmetallic mineral product manufacturing (NAICS 3273) 200
- Personal and laundry services (NAICS 8123) 196
- Plastics and rubber products manufacturing (NAICS 3261) 186
- Pipeline transportation (NAICS 4862) 155
- Waste management and remediation (NAICS 5622) 121
- Utilities (NAICS 2211) 118
- Chemical manufacturing (NAICS 3251) 106
- Personal and laundry services (NAICS 8122) 100
- Merchant wholesalers, durable goods (NAICS 4239) 95
- Primary metal manufacturing (NAICS 3315) 95
- Transportation equipment manufacturing (NAICS 3363) 92
- Fabricated metal product manufacturing (NAICS 3329) 89
- Furniture and related product manufacturing (NAICS 3371) 87
- Merchant wholesalers, nondurable goods (NAICS 4247) 83
- Merchant wholesalers, nondurable goods (NAICS 4245) 76
- Machinery manufacturing (NAICS 3339) 76
- Fabricated metal product manufacturing (NAICS 3323) 72
- Plastics and rubber products manufacturing (NAICS 3262) 70
- Paper manufacturing (NAICS 3222) 63
- Chemical manufacturing (NAICS 3255) 62
- Chemical manufacturing (NAICS 3259) 62
- Wood product manufacturing (NAICS 3219) 60
- Utilities (NAICS 2212) 60
- Utilities (NAICS 2213) 54
- Hospitals (NAICS 6221) 53
- Mining support (NAICS 2131) 51
- Food manufacturing (NAICS 3111) 49
- Nonmetallic mineral product manufacturing (NAICS 3279) 48
- Chemical manufacturing (NAICS 3252) 48
- Printing and related support (NAICS 3231) 44
- Merchant wholesalers, nondurable goods (NAICS 4249) 42
- Nonmetallic mineral product manufacturing (NAICS 3271) 41
- Transportation equipment manufacturing (NAICS 3364) 35
- Primary metal manufacturing (NAICS 3311) 35
- Fabricated metal product manufacturing (NAICS 3321) 34
- Merchant wholesalers, durable goods (NAICS 4233) 33
- Fabricated metal product manufacturing (NAICS 3324) 33
- Warehousing and storage (NAICS 4931) 32
- Transportation equipment manufacturing (NAICS 3362) 31
- Machinery manufacturing (NAICS 3332) 30
- Electrical equipment and appliance manufacturing (NAICS 3353) 27
- Primary metal manufacturing (NAICS 3313) 26
- Waste management and remediation (NAICS 5629) 26
- Mining and quarrying (NAICS 2121) 26
- Primary metal manufacturing (NAICS 3312) 26
- Machinery manufacturing (NAICS 3335) 26
- Food manufacturing (NAICS 3119) 26
- Wood product manufacturing (NAICS 3211) 25
- Merchant wholesalers, nondurable goods (NAICS 4246) 25
- Machinery manufacturing (NAICS 3331) 25
- Chemical manufacturing (NAICS 3253) 24
- Specialty trade contractors (NAICS 2389) 24
- Data processing and hosting (NAICS 5182) 21
- Food manufacturing (NAICS 3112) 21
- Food manufacturing (NAICS 3118) 21
- Nonmetallic mineral product manufacturing (NAICS 3272) 20
- Electrical equipment and appliance manufacturing (NAICS 3359) 20
- Educational services (NAICS 6113) 20
- Motor vehicle and parts dealers (NAICS 4411) 20
- Telecommunications (NAICS 5179) 18
- Transportation equipment manufacturing (NAICS 3361) 18
- Professional, scientific and technical services (NAICS 5413) 18
- Primary metal manufacturing (NAICS 3314) 17
- Waste management and remediation (NAICS 5621) 16
- Miscellaneous manufacturing (NAICS 3399) 16
- Crop production (NAICS 1114) 16
- Administrative and support services (NAICS 5617) 16
- Machinery manufacturing (NAICS 3334) 16
- Fabricated metal product manufacturing (NAICS 3327) 15
- Repair and maintenance (NAICS 8113) 15
- Food manufacturing (NAICS 3114) 15
- Administrative and support services (NAICS 5619) 15
- Professional, scientific and technical services (NAICS 5417) 14
- Educational services (NAICS 6111) 14
- Merchant wholesalers, durable goods (NAICS 4238) 14
- Support activities for transportation (NAICS 4882) 13
- Chemical manufacturing (NAICS 3256) 13
- Computer and electronic product manufacturing (NAICS 3344) 13
- Merchant wholesalers, durable goods (NAICS 4235) 12
- Food manufacturing (NAICS 3116) 12
- Furniture and related product manufacturing (NAICS 3372) 12
- Paper manufacturing (NAICS 3221) 12
- Support activities for transportation (NAICS 4883) 12
- Heavy and civil engineering construction (NAICS 2373) 11
- Support activities for transportation (NAICS 4884) 11
- Pipeline transportation (NAICS 4869) 11
- Rail transportation (NAICS 4821) 10
- Justice, public order and safety (NAICS 9221) 10
- Nonmetallic mineral product manufacturing (NAICS 3274) 10
- Agriculture and forestry support (NAICS 1151) 10
- Chemical manufacturing (NAICS 3254) 10
- Food and beverage retailers (NAICS 4451) 9
- Fabricated metal product manufacturing (NAICS 3322) 9
- Specialty trade contractors (NAICS 2382) 9
- Machinery manufacturing (NAICS 3336) 9
- Fabricated metal product manufacturing (NAICS 3326) 9
- Administration of environmental programs (NAICS 9241) 9
- Merchant wholesalers, nondurable goods (NAICS 4244) 8
- Crop production (NAICS 1111) 8
- Gasoline stations and fuel dealers (NAICS 4571) 8
- Specialty trade contractors (NAICS 2381) 8
- Electrical equipment and appliance manufacturing (NAICS 3351) 8
- Machinery manufacturing (NAICS 3333) 8
- Merchant wholesalers, durable goods (NAICS 4231) 7
- Transportation equipment manufacturing (NAICS 3366) 7
- Truck transportation (NAICS 4841) 7
- Textile mills (NAICS 3133) 7
- Transportation equipment manufacturing (NAICS 3369) 7
- Support activities for transportation (NAICS 4881) 7
- Wood product manufacturing (NAICS 3212) 7
- Miscellaneous manufacturing (NAICS 3391) 7
- NAICS 4529 6
- Food manufacturing (NAICS 3115) 6
- Administration of economic programs (NAICS 9261) 6
- Specialty trade contractors (NAICS 2383) 5
- Electrical equipment and appliance manufacturing (NAICS 3352) 5
- Executive and legislative government (NAICS 9211) 5
- Building material and garden supply stores (NAICS 4442) 5
- Computer and electronic product manufacturing (NAICS 3345) 5
- Repair and maintenance (NAICS 8114) 5
- National security and international affairs (NAICS 9281) 5
- Pipeline transportation (NAICS 4861) 5
- Building material and garden supply stores (NAICS 4441) 5
- Management of companies (NAICS 5511) 4
- Rental and leasing services (NAICS 5324) 4
- Real estate (NAICS 5311) 4
- Mining and quarrying (NAICS 2122) 4
- Professional, scientific and technical services (NAICS 5416) 3
- Fabricated metal product manufacturing (NAICS 3325) 3
- Agriculture and forestry support (NAICS 1152) 3
- Performing arts and spectator sports (NAICS 7112) 3
- Support activities for transportation (NAICS 4889) 3
- Motor vehicle and parts dealers (NAICS 4413) 3
- Merchant wholesalers, durable goods (NAICS 4234) 3
- Publishing industries (NAICS 5111) 3
- Personal and laundry services (NAICS 8129) 3
- Textile mills (NAICS 3132) 3
- Couriers and messengers (NAICS 4922) 3
- Air transportation (NAICS 4811) 3
- Professional, scientific and technical services (NAICS 5419) 3
- Motor vehicle and parts dealers (NAICS 4412) 3
- Beverage and tobacco manufacturing (NAICS 3121) 3
Air-emissions inspections in Ohio, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
High-priority air violations in Ohio, by year
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.
Air-emissions stack tests in Ohio, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 1,474
- 2025 2,213
- 2024 2,721
- 2023 2,800
- 2022 2,355
- 2021 2,582
- 2020 2,194
- 2019 2,684
- 2018 2,476
- 2017 2,537
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| WRIGHT STATE UNIVERSITY | Minor source | No |
| WRIGHT TOOL COMPANY | Minor source | No |
| WRIGHT-PATTERSON AIR FORCE BASE | Major source | No |
| WS PACKAGING GROUP - MASON PLANT | Minor source | No |
| WTPS - CINCINNATI STEEL | Minor source | No |
| WTPS - RIVER TRANSPORTATION TERMINAL | Synthetic minor source | No |
| WYANDOT DOLOMITE #377 | Minor source | No |
| WYANDOT, INC. | Minor source | No |
| WYMAN GORDON FORGING INC | Minor source | No |
| WYNES & WYNES LLC DBA MARSANO DALE CLEANERS | Minor source | No |
| WYOMING SUNOCO | Minor source | No |
| WYSONG GRAVEL - WEST ALEXANDRIA | Minor source | No |
| WYSONG GRAVEL-CAMDEN | Minor source | No |
| WYSONG STONE CO. | Minor source | No |
| X-CALIBUR ENVIRONMENTAL | Minor source | No |
| X-I-M PRODUCTS INC | Emissions classification unknown | No |
| X.L. SAND AND GRAVEL CO., INC. | Minor source | No |
| XALOY, LLC | Minor source | No |
| XENIA FOUNDRY | Minor source | No |
| XENIA MARATHON | Minor source | No |
| XENIA SAND AND GRAVEL INC | Minor source | No |
| XENIA SHELL | Minor source | No |
| XOMOX PFT CORP. | Minor source | No |
| XPO LOGISTICS FREIGHT, INC. - XFM | Minor source | No |
| XPRESS FUEL (SHELL) | Minor source | No |
| XTEK - SHARONVILLE | Minor source | No |
| XTO ENERGY - BENNINGTON B4H/2H | Minor source | No |
| XTO ENERGY - KRANYAICH WELL PAD | Minor source | No |
| XTO ENERGY INC - MILLER UNIT PAD | Minor source | No |
| XTO ENERGY INC - VIOLET UNIT PAD | Minor source | No |
| XTO ENERGY INC. MONROE NORTH 1H | Minor source | No |
| Y & A SLIMI CORP. DBA HUDSON MARATHON | Minor source | No |
| Y&T WOODCRAFT | Synthetic minor source | No |
| YAMADA NORTH AMERICA INC | Minor source | No |
| YANFENG GLOBAL AUTOMOTIVE INTERIOR SYSTEMS CO, LTD. | Synthetic minor source | No |
| YANKEE STREET | Major source | No |
| YARNELL BROS | Minor source | No |
| YASKAWA AMERICA INC., MOTOMAN ROBOTICS DIV. | Minor source | No |
| YELLOW CREEK CASTING CO., INC. | Minor source | No |
| YELLOW ROSE PAD 953034 | Minor source | No |
| YELLOW SPRINGS BP | Minor source | No |
| YELLOWSTONE INDUSTRIAL LLC | Minor source | No |
| YJC ENTERPRISES DBA CREST CLEANERS INC | Minor source | No |
| YODER BODY SHOP LLC | Minor source | No |
| YODER LUMBER | Minor source | No |
| YODER LUMBER-BUCKHORN DIVISION | Minor source | No |
| YOKOHAMA INDUSTRIES AMERICAS OHIO, INC. | Synthetic minor source | No |
| YOKOHAMA TWS NORTH AMERICA, INC. | Minor source | No |
| YORK ROAD AUTOMOTIVE SERVICE, INC. | Minor source | No |
| YORKTOWN AUTOMOTIVE SERVICE CENTER, INC. | Minor source | No |
| YOUNG'S AUTO PAINTING DBA MAACO | Minor source | No |
| YOUNGS SAND & GRAVEL, INC. - SPRENG SITE | Minor source | No |
| YOUNGS SAND + GRAVEL, INC. - MAIN PLANT | Minor source | No |
| YOUNGSTOWN HARD CHROME PLATING & GRINDIN | Minor source | No |
| YOUNGSTOWN STATE UNIVERSITY | Synthetic minor source | No |
| YOUNGSTOWN WASTEWATER TREATMENT FACILITY | Major source | No |
| YOURWAY COATINGS | Minor source | No |
| YS CLEANERS LLC DBA DRY CLEANING WORLD OF AKRON | Minor source | No |
| YUHANICK'S CLEANING FAIR | Minor source | No |
| YUSA CORPORATION | Major source | No |
| YUTZY WOODWORKING - LP PLANT | Synthetic minor source | No |
| YUTZY'S FINISHING | Synthetic minor source | No |
| Z & T GAS MART, LLC | Minor source | No |
| ZACLON LLC | Minor source | No |
| ZAPPS GASTORE | Minor source | No |
| ZEHRCO GIANCOLA COMPOSITES INC. PLANT 4 | Major source | No |
| ZEHRCO PLASTICS INC. (PLANT 2) | Major source | No |
| ZEPPETELLA AUTO SERVICE, INC. | Emissions classification unknown | No |
| ZIEGLER TIRE, INC. | Minor source | No |
| ZIEGLER TIRE, INC. | Minor source | No |
| ZIMMER BIOMET | Minor source | No |
| ZIMMER POWER COMPANY LLC | Minor source | No |
| ZIP IN BP | Minor source | No |
| ZIRCOA INC. | Minor source | No |
| ZOLLINGER C & D LANDFILL | Minor source | No |
| ZOO GAS LTD | Minor source | No |
| ZORESCO EQUIPMENT COMPANY | Minor source | No |
| ZT GABRIELS, INC. | Minor source | No |
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Figures from EPA’s ICIS-AIR download.