EPA Air · stack tests by county and year
Air-emissions stack tests in Allen County, Indiana, 2026
- 19Stack 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 Allen County, Indiana during 2026. 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 Allen County facility page.
Allen County, Indiana, 2026
Air-emissions stack tests in Allen County, other years
Air-emissions stack tests recorded in Allen County, Indiana, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-04-06 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-06 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-06 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-06 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-06 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-06 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-06 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Fail | State |
| 2026-04-06 | CITY OF FORT WAYNE THREE RIVERS FILTRATION PLANT — high-priority violation on file | Pass | State |
| 2026-04-06 | CITY OF FORT WAYNE THREE RIVERS FILTRATION PLANT — high-priority violation on file | Pass | State |
| 2026-04-06 | CITY OF FORT WAYNE THREE RIVERS FILTRATION PLANT — high-priority violation on file | Pass | State |
| 2026-04-01 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | SUPERIOR ALUMINUM ALLOYS LLC — high-priority violation on file | Fail | State |
| 2026-02-27 | CITY OF FORT WAYNE THREE RIVERS FILTRATION PLANT — high-priority violation on file | Pass | State |
| 2026-02-27 | CITY OF FORT WAYNE THREE RIVERS FILTRATION PLANT — 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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register, listing stack tests in Allen county, IN, for 2026. Stack tests recorded in 2026: 19.