EPA Air · stack tests by county and year
Air-emissions stack tests in Ozaukee County, Wisconsin, 2025
- 8Stack 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 Ozaukee County, Wisconsin 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 Ozaukee County facility page.
Ozaukee County, Wisconsin, 2025
Air-emissions stack tests in Ozaukee County, other years
Air-emissions stack tests recorded in Ozaukee County, Wisconsin, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-09 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | Pass | State |
| 2025-10-09 | AMCOR WISCONSIN, LLC - NEW LONDON | Pass | State |
| 2025-10-09 | CHARTER STEEL | Pass | State |
| 2025-08-12 | AHLSTROM NA SPECIALTY SOLUTIONS LLC — high-priority violation on file | Pass | State |
| 2025-07-29 | AHLSTROM NA SPECIALTY SOLUTIONS LLC — high-priority violation on file | Pass | State |
| 2025-05-28 | CHARTER STEEL | Pass | State |
| 2025-05-27 | AHLSTROM NA SPECIALTY SOLUTIONS LLC — high-priority violation on file | Pass | State |
| 2025-02-24 | AHLSTROM NA SPECIALTY SOLUTIONS LLC — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.