EPA Air · stack tests by county and year
Air-emissions stack tests in Madison County, Illinois, 2025
- 7Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Madison County, Illinois during 2025. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Madison County facility page.
Madison County, Illinois, 2025
Air-emissions stack tests in Madison County, other years
Air-emissions stack tests recorded in Madison County, Illinois, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-09-02 | KINDER MORGAN LIQUIDS TERMINALS LLC | Pass | State |
| 2025-06-12 | HIGHLAND ELECTRIC LIGHT PLANT | Pass | State |
| 2025-06-12 | HIGHLAND ELECTRIC LIGHT PLANT | Pass | State |
| 2025-06-12 | HIGHLAND ELECTRIC LIGHT PLANT | Pass | State |
| 2025-06-11 | HIGHLAND ELECTRIC LIGHT PLANT | Pass | State |
| 2025-06-11 | HIGHLAND ELECTRIC LIGHT PLANT | Pass | State |
| 2025-06-11 | HIGHLAND ELECTRIC LIGHT PLANT | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in Madison county, IL, in 2025. Stack tests recorded in 2025: 7.