EPA Air · violations by county and year
High-priority air violations in Oconto County, Wisconsin, 2026
- 4Violations
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity. Each row below is one violation recorded against a source in Oconto County, Wisconsin 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 Oconto County facility page.
Oconto County, Wisconsin, 2026
High-priority air violations in Oconto County, other years
High-priority air violations recorded in Oconto County, Wisconsin, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-05-04 | COVIA ENERGY LLC — high-priority violation on file | Earliest FRV determination | State |
| 2026-05-04 | COVIA ENERGY LLC — high-priority violation on file | Earliest FRV determination | State |
| 2026-04-16 | SMART SAND INC — high-priority violation on file | Earliest FRV determination | State |
| 2026-03-19 | SMART SAND INC — high-priority violation on file | Earliest FRV determination | State |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.