EPA Air · by county
Air-emissions sources in Madison County, Illinois
- 326Facilities
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Every stationary source in Madison County, Illinois that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
Every source’s record in Madison County
Each of the 324 operating major, synthetic minor and minor sources in Madison County, Illinois has a record page: every source in Madison County, A to Z.
By emissions classification in Madison County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Madison County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 inspections 14
- 2025 inspections 38
- 2024 inspections 31
- 2023 inspections 54
- 2022 inspections 42
- 2021 inspections 31
- 2020 inspections 27
- 2019 inspections 26
- 2018 inspections 36
- 2017 inspections 32
Violations in Madison County, 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.
- 2026 violations 4
- 2025 violations 4
- 2023 violations 5
- 2022 violations 12
- 2021 violations 6
- 2020 violations 6
- 2019 violations 3
- 2018 violations 3
- 2017 violations 4
Stack tests in Madison County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 4
- 2025 stack tests 7
- 2023 stack tests 9
- 2022 stack tests 8
- 2021 stack tests 9
- 2020 stack tests 7
- 2019 stack tests 7
- 2018 stack tests 12
- 2017 stack tests 9
Inspections in Madison County, year by year · Violations in Madison County, year by year · Stack tests in Madison County, year by year
Other counties in Illinois
Every county in the state with at least three sources on file.
- Kendall County 86
- Knox County 64
- La Salle County 259
- Lake County 673
- Lawrence County 25
- Lee County 74
- Livingston County 103
- Logan County 51
- Macon County 150
- Macoupin County 70
- Marion County 101
- Marshall County 37
- Mason County 40
- Massac County 21
- McDonough County 57
- McHenry County 342
- McLean County 200
- Menard County 17
- Mercer County 26
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.