EPA Air · stack tests by county and year
Air-emissions stack tests in Black Hawk County, Iowa, 2025
- 21Stack 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 Black Hawk County, Iowa 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 Black Hawk County facility page.
Black Hawk County, Iowa, 2025
- Inspections 11
Air-emissions stack tests in Black Hawk County, other years
Air-emissions stack tests recorded in Black Hawk County, Iowa, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-06 | NORTHERN NATURAL GAS CO-WATERLOO | Pass | State |
| 2025-11-05 | JOHN DEERE PRODUCT ENGINEERING CENTER | Pass | State |
| 2025-11-04 | JOHN DEERE PRODUCT ENGINEERING CENTER | Pass | State |
| 2025-11-04 | JOHN DEERE PRODUCT ENGINEERING CENTER | Pass | State |
| 2025-09-09 | JOHN DEERE FOUNDRY WATERLOO | Pass | State |
| 2025-06-25 | CONAGRA GROCERY PRODUCTS INC | Pass | State |
| 2025-06-24 | CONAGRA GROCERY PRODUCTS INC | Pass | State |
| 2025-04-28 | JOHN DEERE FOUNDRY WATERLOO | Pass | State |
| 2025-03-25 | JOHN DEERE PRODUCT ENGINEERING CENTER | Pass | State |
| 2025-03-25 | JOHN DEERE PRODUCT ENGINEERING CENTER | Pass | State |
| 2025-03-25 | JOHN DEERE PRODUCT ENGINEERING CENTER | Pass | State |
| 2025-03-13 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-12 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-12 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-12 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-12 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-11 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-11 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-11 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-03-11 | MID AMERICAN ENERGY CO-WATERLOO | Pass | State |
| 2025-01-25 | UNIVERSITY OF NORTHERN IOWA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.