EPA Air · stack tests by county and year
Air-emissions stack tests in Jefferson County, Wisconsin, 2025
- 5Stack 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 Jefferson 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 Jefferson County facility page.
Jefferson County, Wisconsin, 2025
- Inspections 28
Air-emissions stack tests in Jefferson County, other years
Air-emissions stack tests recorded in Jefferson County, Wisconsin, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-08-06 | WE ENERGIES - WHITEWATER GENERATING STATION | Pass | State |
| 2025-06-10 | AZTALAN BIO | Pass | State |
| 2025-06-03 | WE ENERGIES - WHITEWATER GENERATING STATION | Pass | State |
| 2025-06-03 | WE ENERGIES - WHITEWATER GENERATING STATION | Pass | State |
| 2025-01-28 | DAYBREAK FOODS COLDSPRING LOCATION | Fail | 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 Jefferson county, WI, in 2025. The stack tests recorded in 2025 are 5.