EPA Air · stack tests by county and year
Air-emissions stack tests in DuPage County, Illinois, 2025
- 13Stack 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 DuPage 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 DuPage County facility page.
DuPage County, Illinois, 2025
- Inspections 20
Air-emissions stack tests in DuPage County, other years
Air-emissions stack tests recorded in DuPage County, Illinois, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-25 | HINSDALE HOSPITAL | Pass | State |
| 2025-11-25 | HINSDALE HOSPITAL | Pass | State |
| 2025-11-25 | HINSDALE HOSPITAL | Pass | State |
| 2025-11-25 | HINSDALE HOSPITAL | Pass | State |
| 2025-10-14 | ARGONNE NATIONAL LABORATORY | Pass | State |
| 2025-07-31 | MCCRONE GROUP THE | Pass | State |
| 2025-03-07 | PAXXUS INC | Pass | State |
| 2025-03-07 | PAXXUS INC | Pass | State |
| 2025-02-06 | PAXXUS INC | Pending | State |
| 2025-02-06 | PAXXUS INC | Pass | State |
| 2025-02-06 | PAXXUS INC | Pending | State |
| 2025-02-05 | PAXXUS INC | Pass | State |
| 2025-02-05 | PAXXUS INC | 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 DuPage county, IL, in 2025. It lists 13 stack tests recorded in 2025.