TRI Facilities
355
Very high
AZ · EPA TRI · SDWIS · Superfund
Arizona environmental disclosure record
According to EPA's 2023 Toxics Release Inventory, Safe Drinking Water Information System, and Superfund National Priorities List extracts, this is Arizona's full public registry profile, toxic releases, drinking-water systems, and Superfund sites in one place.
- TRI facilities
- 355
- Reported releases
- 362.3M lbs
- #10 of 56
- Water systems
- 949
- Superfund NPL sites
- 13
Arizona vs. every U.S. state
Cumulative TRI-reported release pounds, with this state marked in the national distribution
362M lbs Top 18% higher than 82% of 56 states with TRI reporters
Each bar is a $1M-wide band; taller bars hold more states with TRI reporters. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
AZ regulatory profile by statute
Violation/site counts mapped to the EPA statutes this portal tracks
- CWA · NPDES
- RCRA · Subtitle C 13
What this shows Counts are mapped to statute as a structural proxy and reflect reported activity, not toxicity-weighted or population-adjusted risk. Clean Air Act (Title V) permit data is not currently ingested by this portal, so air-permit compliance is not shown here.
How Arizona compares across two EPA disclosure measures
The highlighted point is Arizona. The vertical axis is the share of tracked water systems with at least one health-based SDWIS record; the horizontal axis is TRI-reported pounds per facility on a logarithmic scale so the full state distribution stays readable. The crosshairs use the portal’s published national benchmark medians.
This matrix compares disclosure rates, not toxicity, exposure, current compliance, or drinking-water safety. A lower position on either axis is not a safety rating; use the underlying facility and water-system records for context.
According to EPA TRI, SDWIS, and Superfund NPL extracts, Arizona (AZ) lists 355 TRI-reporting facilities disclosing 362.3M lbs of toxic releases. The same extracts list 13 Superfund sites and 949 EPA-regulated water systems, of which 435 carry health-based SDWIS violation rows. PlainEnviro's composite environmental health score for Arizona is 42/100 (grade F), benchmarked against all U.S. states on chemical release intensity, drinking-water health violations, Superfund site burden, and water violation rate. This is a percentile-derived composite from federal disclosure counts, not a clinical health-risk assessment.
F 42
Arizona Environmental Health Score
A percentile-benchmarked 0–100 composite from 4 EPA federal datasets, with weight redistribution for any unavailable dimension
Chemical Release Intensity F 41
1.0M (lbs per facility) Drinking Water Health Violations F 43
45.8% (% of systems) Superfund Site Burden F 38
3.7 (sites per 100 facilities) Water Violation Rate F 44
5.5 (violations per system) Benchmarks derived from EPA TRI, SDWIS, and Superfund NPL extracts across all 56 U.S. states and territories
Water Systems
949
Moderate
Superfund Sites
13
Moderate
Total Releases
362.3M lbs
Very high
Compliance Snapshot - AZ
Sites with no recorded health violations 66.6%
Sites with at least one open violation 33.4%
Arizona's profile joins three independently maintained EPA programs into one statewide record: the Toxics Release Inventory (TRI, EPCRA Section 313 industrial disclosures), the Safe Drinking Water Information System (SDWIS, Safe Drinking Water Act compliance), and the Superfund National Priorities List. Each program uses its own reporting cadence and facility-identification scheme; PlainEnviro joins them by matched facility and system location rather than a shared federal ID, so a site absent from one program is never assumed absent from another. The counts below reflect the portal's rebuild as of August 2026.
Activity clusters in counties such as Maricopa, Pima, Apache, which account for the highest combined facility, water-system, and Superfund presence. Monitoring and reporting violations are not included in the SDWIS counts shown here.
Every figure reflects the public regulatory record as filed with the U.S. Environmental Protection Agency and is not weighted for toxicity, geographic footprint, or population exposure. A state can rank high in any individual metric because of industrial history, naturally occurring contaminants in source water, or simply the number of reporting facilities, not because current residents face unsafe conditions. Drill into any county or water system below for the full disclosure record.
What does this state's environmental record show?
TRI Facilities
355
Water Systems
949
Superfund Sites
13
Health-Based Violation Records
5,259
Total Releases
362.3M lbs
cumulative, all reported years
Systems with Records
435
water systems
Release-over-release change
What changed for Arizona: EPA TRI 2023 reporting year
Same facilities, both years
+68.9%
278 facilities that filed in 2022 and 2023
Whole inventory
+68.7%
62.8 million lb → 105.9 million lb, every facility that filed
Between the two reporting years, 28 facilities filed for the first time and 9 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Arizona's total reported releases rose from 62.7 million lb in 2022 to 105.8 million lb in 2023, based on EPA TRI filings.
- Arizona's land releases rose from 59.6 million lb in 2022 to 102.6 million lb in 2023, based on EPA TRI filings.
- Arizona's off-site transfers rose from 1.5 million lb in 2022 to 1.8 million lb in 2023, based on EPA TRI filings.
- Arizona's water releases fell from 2.1 thousand lb in 2022 to 1.9 thousand lb in 2023, based on EPA TRI filings.
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | Freeport-McMoran Miami Inc | 129.3M lbs |
| 2 | Asarco LLC Ray Complex/ Hayden Smelter & Concentrator | 67.4M lbs |
| 3 | Pinto Valley Mine | 44.2M lbs |
| 4 | Freeport-McMoran Morenci Inc | 36.9M lbs |
| 5 | Freeport-McMoran Bagdad Inc | 19.0M lbs |
| 6 | Asarco LLC Mission Complex | 17.1M lbs |
| 7 | Springerville Generating Station | 13.7M lbs |
| 8 | Freeport-McMoran Sierrita Inc | 10.0M lbs |
| 9 | Asarco LLC Ray Mine Operations | 5.3M lbs |
| 10 | Freeport-McMoran Safford Inc | 4.8M lbs |
| 11 | Coronado Generating Station | 1.9M lbs |
| 12 | Imsamet of Arizona | 1.8M lbs |
| 13 | Cmc Rebar Arizona | 905.8K lbs |
| 14 | Salt River Project Navajo Generating Station | 891.7K lbs |
| 15 | Cholla Power Plant | 581.7K lbs |
| 16 | Arizona Electric Power Cooperative Inc | 509.5K lbs |
| 17 | Rexam Beverage Can Co Re: Phoenix Facility | 481.9K lbs |
| 18 | Sumco Southwest Corp | 408.8K lbs |
| 19 | United Dairymen of Arizona | 408.0K lbs |
| 20 | Ball Metal Beverage Container Corp. (goodyear Facility) | 407.4K lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| Polacca | 3,890 | 223 |
| Shungopavi | 1,430 | 189 |
| WELLTON TOWN OF | 3,000 | 149 |
| PAPAGO BUTTE DWID | 530 | 145 |
| COTTONWOOD MUNICIPAL WATER CW1 | 11,023 | 144 |
| ANTELOPE PEAK DWID | 150 | 130 |
| Sipaulovi (Lower Sipaulovi/Lower Mishongnovi) | 609 | 126 |
| Seba Dalkai Boarding School BIA | 250 | 126 |
| Mishongnovi (Upper Sipaulovi/Upper Mishongnovi) | 490 | 124 |
| Dilkon-Indian Wells-Greasewood-White Cone NTUA | 4,986 | 105 |
| GW SAGUARO DIST WATER CO - RINCON | 232 | 90 |
| VILLA GRANDE DWID | 283 | 86 |
| Toadlena NTUA | 903 | 82 |
| NEW SADDLEBACK VISTA | 100 | 77 |
| RANCH WATER SERVICE INC | 135 | 74 |
| SCUA Upper Seven Mile | 8,478 | 72 |
| Aneth NTUA | 1,481 | 71 |
| COTTONWOOD MUNICIPAL WATER VV3 | 1,458 | 60 |
| GREEN VALLEY MHP | 190 | 60 |
| THUNDERBIRD FARMS DWID | 2,231 | 58 |
| SAN SIMON DWID | 312 | 56 |
| MARICOPA MOUNTAIN DWID 1 | 450 | 54 |
| OAK CREEK WATER DISTRICT | 1,507 | 53 |
| WHITE HORSE RANCH OWNERS ASSOCIATION | 292 | 53 |
| CIBOLA WATER IMPROVEMENT DISTRICT | 197 | 53 |
| PINEDALE ESTATES DWID | 208 | 48 |
| SIERRA PACIFIC MOBILE MANOR | 816 | 48 |
| Fort McDowell Community | 7,260 | 46 |
| SIERRA VISTA RV PARK | 200 | 46 |
| CITY OF YUMA | 103,264 | 46 |
| EPCOR - LAKESIDE | 1,775 | 45 |
| Mexican Water NTUA | 294 | 44 |
| LAGOON ESTATES WC UNIT 2 | 125 | 43 |
| EPCOR - MOOVALYA KEYS | 1,298 | 43 |
| EPCOR - MARINA VILLAGE | 528 | 39 |
| PAYSON WATER - EAST VERDE ESTATES | 375 | 37 |
| EPCOR - PARKER DAM | 429 | 37 |
| Sweetwater NTUA | 2,014 | 37 |
| Hopi High School - BIA | 1,005 | 35 |
| SUN LEISURE ESTATES IMPROVEMENT DISTRICT | 143 | 35 |
| Second Mesa Day School - BIA | 255 | 34 |
| SCUA Bylas | 3,160 | 34 |
| BOUSE DWID | 284 | 34 |
| DESERT GARDENS RV RESORT CO-OP, INC | 532 | 33 |
| WHISPERING WINDS APARTMENTS | 60 | 32 |
| SILVER CREEK RV PARK | 280 | 31 |
| BIG PARK WATER COMPANY | 7,392 | 29 |
| WENDEN DWID | 360 | 28 |
| Cameron NTUA | 742 | 28 |
| JONES COOP WATER ASSOC | 35 | 27 |
| Fort Defiance-Window Rock-St Michaels NTUA | 12,869 | 27 |
| FOOTHILLS UTILITIES KINGMAN EAST | 2,538 | 26 |
| GARDENDALE MOBILE HOME AND RV PARK | 93 | 26 |
| MONTE VISTA WATER COMPANY | 150 | 25 |
| PINE VALLEY WATER COMPANY | 400 | 25 |
| EPCOR - RIO LINDO | 79 | 25 |
| SHANGRI LA RANCH | 345 | 24 |
| SHEPARD WATER COMPANY | 430 | 24 |
| Todahaidekani NTUA | 301 | 24 |
| Dishchii Bikoh Community School - BIA Charter | 622 | 21 |
| WILLIAMS CITY OF | 3,145 | 21 |
| MORENCI WATER ELEC CO MAIN | 4,108 | 21 |
| Red Mesa NTUA | 1,023 | 20 |
| GRANDVIEW WATER COMPANY | 50 | 18 |
| COPPER MOUNTAIN RANCH CFD | 1,071 | 18 |
| CORDES JUNCTION MOTEL RV PARK | 250 | 18 |
| COTTONWOOD MUNICIPAL WATER VV6 | 4,509 | 18 |
| RIO VERDE RV PARK | 90 | 18 |
| Colorado River Regional Water System | 3,476 | 17 |
| Lower Moencopi - Spring Source | 465 | 17 |
| POMERENE DWID | 1,618 | 17 |
| MAJESTIC VIEW WATER IMPROVEMENT DISTRICT | 70 | 17 |
| KRAZY K RV PARK | 380 | 17 |
| EPCOR - HOLIDAY HARBOR | 559 | 17 |
| CENTENNIAL PARK DWID | 1,578 | 16 |
| VALLE ESCONDIDO | 405 | 16 |
| CAMERON TRADING POST | 1,270 | 15 |
| COLDWATER CANYON 1 | 541 | 15 |
| CIENEGA WATER COMPANY INC | 108 | 15 |
| SNOWBIRD RV PARK | 180 | 14 |
| WEKIVA FALLS RESORT | 352 | 14 |
| SCUA Lower Peridot | 702 | 13 |
| Cocopah Bend RV & Golf Resort | 1,095 | 13 |
| SPRINGERVILLE TOWN OF | 1,972 | 13 |
| TOMBSTONE CITY OF | 1,545 | 13 |
| GRAND CANYON NATIONAL PARK | 16,590 | 13 |
| APACHE MOBILE HOME AND RV PARK, LLC | 130 | 13 |
| COUNTRY LANE TRAILER PARK | 450 | 13 |
| INDIAN HILLS ESTATES | 30 | 13 |
| LOST TRAVELER RV PARK | 200 | 13 |
| Kaibab Village | 407 | 12 |
| WILLOW LAKES PROPERTY OWNERS ASSOC | 190 | 12 |
| GREENFIELD RANCHETTES | 53 | 12 |
| SUNLAND WATER COMPANY | 227 | 12 |
| ELFRIDA WID | 800 | 11 |
| WHY DWID | 400 | 11 |
| MARICOPA CONSOLIDATED DWID | 928 | 11 |
| MOUNTAIN VU RV COURT | 80 | 11 |
| Quechan Utility | 5,660 | 10 |
| Grand Canyon West | 3,120 | 10 |
Cities with Water Issues
Tucson
92 water systems
Ft Defiance
83 water systems
Phoenix
49 water systems
Maricopa
40 water systems
Sells
27 water systems
Payson
25 water systems
Glendale
22 water systems
Yuma
20 water systems
El Mirage
20 water systems
Prescott
20 water systems
Scottsdale
20 water systems
Flagstaff
15 water systems
Sedona
15 water systems
Camp Verde
12 water systems
Sierra Vista
12 water systems
Fort Defiance
11 water systems
Bullhead City
10 water systems
Gilbert
9 water systems
Cottonwood
9 water systems
Surprise
9 water systems
Superfund Sites (13)
| Site Name | Status | HRS Score |
|---|---|---|
| Apache Powder Co. | NPL Site | 39.09 |
| Hassayampa Landfill | NPL Site | 42.79 |
| Indian Bend Wash Area | NPL Site | 42.24 |
| Iron King Mine - Humboldt Smelter | NPL Site | 52.69 |
| Lukachukai Mountains Mining District | NPL Site | 50.00 |
| Luke Air Force Base | Deleted NPL Site | 37.93 |
| Motorola, Inc. (52nd Street Plant) | NPL Site | 40.83 |
| Mountain View Mobile Home Estates | Deleted NPL Site | 0.00 |
| Nineteenth Avenue Landfill | Deleted NPL Site | 54.27 |
| Phoenix-Goodyear Airport Area | NPL Site | 45.91 |
| Tucson International Airport Area | NPL Site | 57.80 |
| Williams Air Force Base | NPL Site | 37.93 |
| Yuma Marine Corps Air Station | NPL Site | 32.24 |
Cities with Environmental Records
Phoenix
96 facilities · 49 water systems
Tucson
28 facilities · 92 water systems
Mesa
26 facilities · 2 water systems
Chandler
24 facilities · 5 water systems
Tempe
17 facilities · 5 water systems
Glendale
15 facilities · 22 water systems
Casa Grande
15 facilities · 2 water systems
Yuma
10 facilities · 20 water systems
Goodyear
8 facilities · 2 water systems
Kingman
7 facilities · 7 water systems
Buckeye
7 facilities · 6 water systems
Florence
5 facilities · 2 water systems
Coolidge
5 facilities · 1 water systems
El Mirage
4 facilities · 20 water systems
Flagstaff
4 facilities · 15 water systems
Marana
4 facilities · 7 water systems
Sacaton
4 facilities · 5 water systems
Eloy
4 facilities · 3 water systems
Tolleson
4 facilities · 0 water systems
Prescott
3 facilities · 20 water systems
Frequently Asked Questions
How many TRI facilities are in Arizona? ▼
Arizona has 355 facilities that report to the EPA Toxic Release Inventory (TRI). These facilities have collectively reported 362.3M lbs in total toxic chemical releases. TRI data is self-reported annually by facilities that manufacture, process, or use listed toxic chemicals above threshold amounts.
Does Arizona have Superfund sites? ▼
Yes, Arizona has 13 sites on the EPA Superfund National Priorities List (NPL). Superfund sites are contaminated locations identified for long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
What does EPA SDWIS list for drinking water in Arizona? ▼
Arizona has 949 EPA-regulated water systems in the Safe Drinking Water Information System (SDWIS) extract used here. 435 water systems have a health-based violation row (MCL exceedance) in this historical extract. A past registry row is not a current drinkability verdict. For current utility conditions, contact the local water utility or the Arizona drinking water program. Source: EPA SDWIS.
What environmental data is available for Arizona? ▼
PlainEnviro provides three categories of EPA environmental data for Arizona: Toxic Release Inventory (TRI) data covering 355 industrial facilities, Safe Drinking Water Information System (SDWIS) data for 949 water systems, and Superfund National Priorities List (NPL) data for 13 contaminated sites.
How does Arizona compare to other states on EPA disclosure counts? ▼
Arizona has 355 TRI facilities with 362.3M lbs in total releases, 13 Superfund sites, and 5,259 water system violations on record. These are federal disclosure counts; they are not toxicity-weighted or population-adjusted risk scores. Source: EPA TRI, SDWIS, and Superfund NPL databases.
What is Arizona's environmental health score? ▼
PlainEnviro's composite environmental health score for Arizona is 42/100 (grade F). This score combines four percentile-benchmarked dimensions from EPA federal extracts: chemical release intensity per TRI facility, drinking-water health violation rate from SDWIS, Superfund site burden relative to industrial activity, and overall water violation rate. Scores are benchmarked against all 56 U.S. states and territories. When a dimension lacks data, its weight redistributes to the remaining dimensions so the score never deflates from missing inputs. This is a registry-count composite, not a clinical exposure or health-outcome assessment.
Explore More Data for Arizona
TRI Facilities in Arizona →
Every toxic-release facility reporting in the state, ranked by volume
Drinking Water Systems in Arizona →
Community water systems and their violation records
Air Quality in Arizona →
County-level AQI from EPA monitoring stations
Compare states by burden →
EJ screening scores for every U.S. county
State environmental rankings →
How states compare on releases, water and Superfund
Browse all states →
Environmental profiles for every U.S. state
About This Data
This page aggregates environmental data from three EPA programs for Arizona: the Toxic Release Inventory (TRI) for industrial chemical releases, the Safe Drinking Water Information System (SDWIS) for water quality, and the Superfund National Priorities List (NPL) for hazardous waste cleanup sites.
PlainEnviro presents this data without advocacy framing. Numbers reflect reported data and may not capture all environmental activity. For specific health or environmental concerns, contact your state environmental agency.
What to do with Arizona's data
Use this state profile as a starting point, then drill into the specific dataset that matters to you.
- Check the 355 TRI facilities reporting in Arizona for the largest reported releases near a specific county. View facilities
- 435 water systems in the state have a recorded health-based violation, check if yours is one of them. Check water systems
- See how Arizona compares to other states on releases, water violations, and Superfund sites. State rankings
Reported data reflects what facilities and agencies disclose to the EPA; it is not a complete measure of environmental risk or a substitute for local guidance.
Use and verify this record
Arizona's profile brings together EPA release, drinking-water, and Superfund records. It reports the underlying programs without making a health or environmental-risk determination.
State environmental figures are computed directly from EPA data. The methodology records the joins, definitions, and refresh cadence for each program.
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.