EPA Air · by state
Air-emissions sources in Indiana
- 1,750Facilities
Every source’s record in Indiana
Each of the 1,693 operating major, synthetic minor and minor sources in Indiana has a record page: its classification, its high-priority violation status, its compliance evaluations, violations and stack tests, and its enforcement actions and penalties. Each county below lists its own; or every source in Indiana, A to Z.
By emissions classification in Indiana
High-priority violations in Indiana
244 sources in Indiana carry a current high-priority Clean Air Act violation.
Counties in Indiana
- Adams County 14
- Allen County 80
- Bartholomew County 22
- Blackford County 7
- Boone County 17
- Carroll County 3
- Cass County 17
- Clark County 35
- Clay County 9
- Clinton County 8
- Crawford County 3
- Daviess County 17
- Dearborn County 16
- Decatur County 12
- DeKalb County 26
- Delaware County 18
- Dubois County 20
- Elkhart County 155
- Fayette County 3
- Floyd County 15
- Fountain County 7
- Fulton County 6
- Gibson County 12
- Grant County 20
- Greene County 11
- Hamilton County 25
- Hancock County 11
- Harrison County 9
- Hendricks County 21
- Henry County 12
- Howard County 16
- Huntington County 19
- Jackson County 15
- Jasper County 16
- Jay County 12
- Jefferson County 7
- Jennings County 8
- Johnson County 21
- Knox County 16
- Kosciusko County 30
- LaGrange County 27
- Lake County 128
- LaPorte County 31
- Lawrence County 8
- Madison County 17
- Marion County 159
- Marshall County 37
- Martin County 4
- Miami County 12
- Monroe County 12
- Montgomery County 12
- Morgan County 13
- Newton County 4
- Noble County 16
- Orange County 7
- Perry County 7
- Pike County 10
- Porter County 37
- Posey County 23
- Pulaski County 10
- Putnam County 9
- Randolph County 9
- Ripley County 6
- Rush County 4
- Scott County 8
- Shelby County 21
- Spencer County 9
- St. Joseph County 51
- Starke County 7
- Steuben County 16
- Sullivan County 13
- Tippecanoe County 34
- Tipton County 5
- Vanderburgh County 39
- Vermillion County 10
- Vigo County 38
- Wabash County 19
- Warrick County 11
- Washington County 8
- Wayne County 22
- Wells County 10
- White County 14
- Whitley County 12
Industries in Indiana
Sources are grouped by the first industry code on the facility record.
- Petroleum and coal products manufacturing (NAICS 3241) 127
- Plastics and rubber products manufacturing (NAICS 3261) 97
- Fabricated metal product manufacturing (NAICS 3328) 68
- Transportation equipment manufacturing (NAICS 3362) 66
- Furniture and related product manufacturing (NAICS 3371) 58
- Transportation equipment manufacturing (NAICS 3363) 57
- Utilities (NAICS 2211) 52
- Primary metal manufacturing (NAICS 3311) 46
- Repair and maintenance (NAICS 8111) 44
- Mining and quarrying (NAICS 2123) 44
- Primary metal manufacturing (NAICS 3315) 42
- Hospitals (NAICS 6221) 41
- Chemical manufacturing (NAICS 3251) 38
- Waste management and remediation (NAICS 5622) 36
- Pipeline transportation (NAICS 4862) 34
- Wood product manufacturing (NAICS 3219) 33
- Merchant wholesalers, nondurable goods (NAICS 4247) 32
- Fabricated metal product manufacturing (NAICS 3329) 28
- Fabricated metal product manufacturing (NAICS 3323) 26
- Utilities (NAICS 2213) 26
- Primary metal manufacturing (NAICS 3314) 24
- Educational services (NAICS 6113) 22
- Chemical manufacturing (NAICS 3259) 21
- Food manufacturing (NAICS 3112) 21
- Merchant wholesalers, durable goods (NAICS 4239) 20
- Mining and quarrying (NAICS 2121) 20
- Chemical manufacturing (NAICS 3255) 20
- Paper manufacturing (NAICS 3222) 19
- Merchant wholesalers, nondurable goods (NAICS 4245) 19
- Food manufacturing (NAICS 3118) 18
- Furniture and related product manufacturing (NAICS 3372) 18
- Primary metal manufacturing (NAICS 3313) 17
- Plastics and rubber products manufacturing (NAICS 3262) 17
- Nonmetallic mineral product manufacturing (NAICS 3273) 16
- Food manufacturing (NAICS 3111) 14
- Oil and gas extraction (NAICS 2111) 13
- Food manufacturing (NAICS 3119) 13
- Fabricated metal product manufacturing (NAICS 3321) 13
- Nonmetallic mineral product manufacturing (NAICS 3279) 13
- Primary metal manufacturing (NAICS 3312) 13
- Fabricated metal product manufacturing (NAICS 3324) 12
- Miscellaneous manufacturing (NAICS 3399) 12
- Machinery manufacturing (NAICS 3339) 12
- Chemical manufacturing (NAICS 3254) 12
- Warehousing and storage (NAICS 4931) 11
- Electrical equipment and appliance manufacturing (NAICS 3359) 10
- Printing and related support (NAICS 3231) 10
- Data processing and hosting (NAICS 5182) 10
- Food manufacturing (NAICS 3116) 10
- Machinery manufacturing (NAICS 3336) 9
- Professional, scientific and technical services (NAICS 5413) 9
- Personal and laundry services (NAICS 8123) 9
- Fabricated metal product manufacturing (NAICS 3327) 8
- Justice, public order and safety (NAICS 9221) 8
- Nonmetallic mineral product manufacturing (NAICS 3272) 8
- Machinery manufacturing (NAICS 3334) 8
- Transportation equipment manufacturing (NAICS 3364) 8
- Utilities (NAICS 2212) 8
- Ambulatory health care services (NAICS 6214) 7
- Chemical manufacturing (NAICS 3252) 7
- Transportation equipment manufacturing (NAICS 3366) 7
- Merchant wholesalers, durable goods (NAICS 4233) 6
- Nonmetallic mineral product manufacturing (NAICS 3274) 6
- Computer and electronic product manufacturing (NAICS 3345) 6
- Support activities for transportation (NAICS 4881) 6
- Miscellaneous manufacturing (NAICS 3391) 6
- Support activities for transportation (NAICS 4882) 6
- Beverage and tobacco manufacturing (NAICS 3121) 6
- Pipeline transportation (NAICS 4869) 5
- Wood product manufacturing (NAICS 3212) 5
- Merchant wholesalers, nondurable goods (NAICS 4246) 5
- Merchant wholesalers, nondurable goods (NAICS 4249) 5
- Chemical manufacturing (NAICS 3253) 5
- Transportation equipment manufacturing (NAICS 3369) 5
- Professional, scientific and technical services (NAICS 5417) 5
- Nonmetallic mineral product manufacturing (NAICS 3271) 5
- Specialty trade contractors (NAICS 2389) 5
- Electrical equipment and appliance manufacturing (NAICS 3353) 4
- Machinery manufacturing (NAICS 3331) 4
- Crop production (NAICS 1111) 4
- Wood product manufacturing (NAICS 3211) 4
- National security and international affairs (NAICS 9281) 4
- Paper manufacturing (NAICS 3221) 4
- Transportation equipment manufacturing (NAICS 3361) 4
- Waste management and remediation (NAICS 5629) 4
- Fabricated metal product manufacturing (NAICS 3326) 3
- Agriculture and forestry support (NAICS 1151) 3
- Food and beverage retailers (NAICS 4451) 3
- Repair and maintenance (NAICS 8113) 3
- Crop production (NAICS 1119) 3
- Rail transportation (NAICS 4821) 3
Air-emissions inspections in Indiana, 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 Indiana, 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 Indiana, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 1,010
- 2025 1,619
- 2024 1,704
- 2023 1,487
- 2022 1,925
- 2021 1,495
- 2020 1,473
- 2019 1,595
- 2018 1,605
- 2017 1,812
Facilities
Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for state IN. It lists 1,750 facilities in IN, 1,111 facilities in nonattainment areas, and 346 major sources in nonattainment areas.