EPA Air · violations by county and year
High-priority air violations in Maricopa County, Arizona, 2026
- 20Violations
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 Maricopa County, Arizona 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 Maricopa County facility page.
Maricopa County, Arizona, 2026
- Inspections 178
- Stack tests 31
High-priority air violations in Maricopa County, other years
High-priority air violations recorded in Maricopa County, Arizona, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-08-05 | COMPASS DATACENTERS PHX I — high-priority violation on file | Earliest FRV determination | Local |
| 2026-08-05 | ARIZONA STATE UNIVERSITY TEMPE CAMPUS — high-priority violation on file | Earliest FRV determination | Local |
| 2026-07-10 | GILA RIVER POWER STATION — high-priority violation on file | Earliest FRV determination | Local |
| 2026-06-29 | GLENDALE MUN SANITARY LANDFILL/FLD OPER — high-priority violation on file | Earliest FRV determination | Local |
| 2026-06-29 | LUKE AFB - 56TH FIGHTER WING — high-priority violation on file | Earliest FRV determination | Local |
| 2026-06-29 | PATRICIAN MARBLE — high-priority violation on file | Earliest FRV determination | Local |
| 2026-06-29 | GILA RIVER POWER STATION — high-priority violation on file | Earliest FRV determination | Local |
| 2026-06-04 | SOUTHWEST REGIONAL LANDFILL — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-29 | NEW WINCUP HOLDINGS — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-13 | SUMCO SOUTHWEST CORPORATION — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-01 | SALT RIVER PROJECT - KYRENE GENERATING STATION — high-priority violation on file | Earliest FRV determination | Local |
| 2026-04-21 | GILA RIVER POWER STATION — high-priority violation on file | Earliest FRV determination | Local |
| 2026-04-21 | OLD TOWN FIBERGLASS — high-priority violation on file | Earliest FRV determination | Local |
| 2026-04-21 | PHX01 / PHX02 / PHX03 / PHX05 — high-priority violation on file | Earliest FRV determination | Local |
| 2026-04-01 | GOLD BOND BUILDING PRODUCTS — high-priority violation on file | Earliest FRV determination | Local |
| 2026-03-30 | INTEL CORP - OCOTILLO CAMPUS — high-priority violation on file | Earliest FRV determination | Local |
| 2026-03-13 | INSULFOAM — high-priority violation on file | Earliest FRV determination | Local |
| 2026-03-04 | HENRY PRODUCTS — high-priority violation on file | Earliest FRV determination | Local |
| 2026-03-03 | QUIKJET - MONROE I & II TERMINALS — high-priority violation on file | Earliest FRV determination | Local |
| 2026-01-05 | ROGERS CORPORATION - ROOSEVELT AVE FACILITY — high-priority violation on file | Earliest FRV determination | Local |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.