EPA Air · by county
Air-emissions sources in Lake County, Illinois
- 673Facilities
Every stationary source in Lake 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 Lake County
Each of the 670 operating major, synthetic minor and minor sources in Lake County, Illinois has a record page: every source in Lake County, A to Z.
By emissions classification in Lake 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 Lake 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 10
- 2025 inspections 9
- 2024 inspections 22
- 2023 inspections 17
- 2022 inspections 14
- 2021 inspections 22
- 2020 inspections 24
- 2019 inspections 32
- 2018 inspections 35
- 2017 inspections 12
Violations in Lake 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.
- 2024 violations 5
- 2023 violations 3
- 2022 violations 5
- 2021 violations 3
- 2020 violations 6
- 2019 violations 6
- 2018 violations 6
- 2017 violations 4
Stack tests in Lake County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 3
- 2025 stack tests 12
- 2024 stack tests 4
- 2023 stack tests 13
- 2021 stack tests 8
- 2020 stack tests 4
- 2019 stack tests 5
- 2018 stack tests 10
- 2017 stack tests 8
Inspections in Lake County, year by year · Violations in Lake County, year by year · Stack tests in Lake County, year by year
Other counties in Illinois
Every county in the state with at least three sources on file.
- Jasper County 31
- Jefferson County 71
- Jersey County 21
- Jo Daviess County 58
- Johnson County 21
- Kane County 547
- Kankakee County 169
- Kendall County 86
- Knox County 64
- La Salle County 259
- Lawrence County 25
- Lee County 74
- Livingston County 103
- Logan County 51
- Macon County 150
- Macoupin County 70
- Madison County 326
- Marion County 101
- Marshall County 37
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Lake county, IL. It lists 673 facilities and 12 major sources.