EPA Air · by county
Air-emissions sources in McHenry County, Illinois
- 342Facilities
Every stationary source in McHenry 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 McHenry County
Each of the 337 operating major, synthetic minor and minor sources in McHenry County, Illinois has a record page: every source in McHenry County, A to Z.
By emissions classification in McHenry 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 McHenry 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 3
- 2025 inspections 10
- 2024 inspections 10
- 2023 inspections 3
- 2022 inspections 3
- 2021 inspections 7
- 2020 inspections 6
- 2019 inspections 3
- 2017 inspections 11
Stack tests in McHenry County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
Inspections in McHenry County, year by year · Stack tests in McHenry County, year by year
Other counties in Illinois
Every county in the state with at least three sources on file.
- Livingston County 103
- Logan County 51
- Macon County 150
- Macoupin County 70
- Madison County 326
- Marion County 101
- Marshall County 37
- Mason County 40
- Massac County 21
- McDonough County 57
- McLean County 200
- Menard County 17
- Mercer County 26
- Monroe County 35
- Montgomery County 65
- Morgan County 65
- Moultrie County 36
- Ogle County 123
- Peoria County 216
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.