EPA Air · inspections by county and year
Air-emissions inspections in Williamson County, Illinois, 2025
- 4Inspections
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Each row below is one inspection recorded against a source in Williamson 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 Williamson County facility page.
Williamson County, Illinois, 2025
- Stack tests 16
Air-emissions inspections in Williamson County, other years
- 2022 4
Air-emissions inspections recorded in Williamson County, Illinois, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-06-18 | GENERAL DYNAMICS ORDNANCE & TACTICAL SYSTEMS INC | FCE On-Site | State |
| 2025-04-24 | AISIN ELECTRONICS ILLINOIS LLC | FCE On-Site | State |
| 2025-03-11 | AISIN MFG ILLINOIS LLC | FCE On-Site | State |
| 2025-03-11 | AISIN LIGHT METALS LLC | FCE On-Site | State |
Dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.