Environmental compliance
Environmental compliance in Arizona
10,103 active EPA-regulated sites in Arizona: 649 with an identified violation, 98 in significant violation, $8.7 million in penalties over five years — EPA ECHO, as of October 18, 2026, by county and facility.
How many facilities in Arizona are regulated by the EPA, and how many are in violation (as of October 18, 2026)?
How many active facilities in Arizona fall under each EPA program?
A facility can be in several programs.
| Program | Active sites |
|---|---|
| Air (Clean Air Act) | 553 |
| Water discharge permits (Clean Water Act, NPDES) | 4,395 |
| Hazardous waste (RCRA) | 4,205 |
| Drinking water systems (SDWA) | 1,569 |
| Toxics Release Inventory reporters | 307 |
| Greenhouse gas reporters (GHGRP) | 67 |
Which counties in Arizona have the most facilities in significant violation of EPA rules?
Which large facilities in Arizona are in significant violation of EPA rules?
| Facility | Compliance status | Quarters in violation (of 12) | Penalties, 5 years |
|---|---|---|---|
| JOINT VENTURE WWTF Parker, AZ | Significant Violation | 12 | – |
| TUBA CITY WWTP Tuba City, AZ | Significant Violation | 12 | – |
| ASARCO LLC MISSION MINE COMPLEX Sahuarita, AZ | Significant Violation | 12 | – |
| APACHE NITROGEN PRODUCTS - PLANT St. David, AZ | Significant Violation | 12 | – |
| NOGALES INTERNATIONAL WASTEWATER TREATMENT PLANT Rio Rico, AZ | Significant Violation | 12 | – |
| DRAKE CEMENT- DRAKE ROAD SITE Paulden, AZ | Significant Violation | 12 | – |
| ASARCO LLC HAYDEN OPERATIONS Hayden, AZ | Significant Violation | 12 | – |
| MOHAVE VALLEY LANDFILL Mohave Valley, AZ | Significant Violation | 12 | – |
| GLOBAL WATER - SANTA CRUZ WATER COMPANY, LLC Maricopa, AZ | Significant Violation | 6 | – |
| CITY OF BUCKEYE - SUNDANCE WRF Buckeye, AZ | Significant Violation | 5 | – |
Which large facilities in Arizona had the highest environmental penalties in the last five years?
| Facility | Compliance status | Quarters in violation (of 12) | Penalties, 5 years |
|---|---|---|---|
| SOUTH YUMA COUNTY LANDFILL Yuma, AZ | No Violation Identified | 2 | $11,250 |
| NEW WINCUP HOLDINGS Phoenix, AZ | Violation Identified | 5 | $10,920 |
| CMC STEEL FABRICATORS Mesa, AZ | Violation Identified | 4 | $4,400 |
| OCOTILLO POWER PLANT Tempe, AZ | No Violation Identified | 1 | $2,319 |
| MESQUITE GENERATING STATION Arlington, AZ | No Violation Identified | 2 | $1,686 |
| MAAX SPAS INDUSTRIES CORP. Chandler, AZ | No Violation Identified | 2 | $1,600 |
| SALT RIVER PROJECT NAVAJO GENERATING STATION Page, AZ | No Violation Identified | 3 | $1,250 |
EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record.
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