EPA Air · stack tests by county and year
Air-emissions stack tests in Manitowoc County, Wisconsin, 2025
- 6Stack 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 Manitowoc 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 Manitowoc County facility page.
Manitowoc County, Wisconsin, 2025
Air-emissions stack tests in Manitowoc County, other years
Air-emissions stack tests recorded in Manitowoc County, Wisconsin, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-15 | WISCONSIN ALUMINUM FOUNDRY — high-priority violation on file | Fail | State |
| 2025-10-14 | MANITOWOC PUBLIC UTILITIES | Pass | State |
| 2025-08-20 | CALUMET RENEWABLE ENERGY LLC - GROTEGUT/MAPLE LEAF FACILITY | Pass | State |
| 2025-07-28 | MANITOWOC PUBLIC UTILITIES | Pass | State |
| 2025-04-24 | WISCONSIN ALUMINUM FOUNDRY — high-priority violation on file | Pass | State |
| 2025-01-13 | MANITOWOC PUBLIC UTILITIES | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
The page covers Clean Air Act facilities in the EPA air register with stack tests in Manitowoc county, WI, in 2025. It lists 6 stack tests recorded in 2025.