PlainEnviro

Apache, AZ

Moderate Risk (47/100)

Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.

Environmental data for Apache in Arizona · Population: 65,680

TRI sites such as Springerville Generating Station; Coronado Generating Station; SDWIS systems such as Farmington Rural-Shiprock-Beclabito NTUA; Fort Defiance-Window Rock-St Michaels NTUA; Chinle-Many Farms-Del Muerto NTUA; NPL sites such as Lukachukai Mountains Mining District anchor Apache, AZ's EPA extract. Derived burden score 47/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.

Health-flagged SDWIS rows in Apache include Farmington Rural-Shiprock-Beclabito NTUA; Fort Defiance-Window Rock-St Michaels NTUA; Dilkon-Indian Wells-Greasewood-White Cone NTUA, while Springerville Generating Station leads reported TRI pounds among local Form R filers. AQS median AQI 14 / peak 57 in 2024.

Burden score 47/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Apache -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.

Release-over-release change

What changed for Apache, AZ: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-8.3%

2 facilities that filed in 2022 and 2023

Whole inventory

-8.3%

3.1 million lb → 2.9 million lb, every facility that filed

  • Apache, AZ's total reported releases fell from 3.1 million lb in 2022 to 2.9 million lb in 2023, based on EPA TRI filings.
  • Apache, AZ's land releases fell from 2.9 million lb in 2022 to 2.7 million lb in 2023, based on EPA TRI filings.
  • Apache, AZ's air releases rose from 185.5 thousand lb in 2022 to 195.6 thousand lb in 2023, based on EPA TRI filings.
County population (Census ACS)
65,680
TRI Facilities
2
Water Systems
125
Superfund Sites
1
Total Releases
15.5M lbs

Air Quality History (2020–2024)

EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.

Year Good Moderate Unhealthy (SG) Max AQI
2024 350 (99%) 2 0 57
2023 362 (99%) 2 1 106
2022 359 (99%) 4 0 57
2021 353 (98%) 6 0 90
2020 356 (98%) 8 0 63
2024 Good Air Quality: 99% of days
Median AQI: 14

Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)

For real-time air quality readings and pollutant breakdowns in Arizona, see the EPA's AirNow.gov.

Water Systems (125)

System System pop (SDWIS) Violations
Farmington Rural-Shiprock-Beclabito NTUA 15,233 4
Fort Defiance-Window Rock-St Michaels NTUA 12,869 27
Chinle-Many Farms-Del Muerto NTUA 8,458 0
Tuba City NTUA 6,276 0
Pinon-District 4 NTUA 5,195 0
Dilkon-Indian Wells-Greasewood-White Cone NTUA 4,986 105
Mariano Lake-Pinedale-Church Rock NTUA 4,562 0
Crownpoint-Littlewater-Three Mile Point NTUA 3,950 0
Ganado-Burnside-Cornfield-Steamboat NTUA 3,947 3
Kayenta NTUA 3,844 0
ST JOHNS CITY OF 3,500 0
Leupp-Birdsprings-Tolani Lake NTUA 2,100 2
Bread Springs-Chichiltah NTUA 2,066 0
Sweetwater NTUA 2,014 37
SPRINGERVILLE TOWN OF 1,972 13
Sanostee-Tocito NTUA 1,953 0
New Lands NTUA 1,905 0
Torreon-Ojo Encino East - NTUA 1,864 0
Twin Lakes NTUA 1,833 2
PETRIFIED FOREST NP 1,742 0
Tohatchi-Mexican Springs-Twin Lakes NTUA 1,669 0
Lukachukai NTUA 1,659 0
Defiance NTUA 1,659 0
Red Rock NTUA 1,652 0
Thoreau West-John Willie Camp-Baca NTUA 1,611 0
Kaibeto NTUA 1,590 0
Rock Springs Community - NTUA 1,574 0
Many Farms Community School BIA 1,506 1
Aneth NTUA 1,481 71
Inscription House-Navajo Mountain NTUA 1,368 0
Cottonwood-Tselani NTUA 1,334 0
Chilchinbeto NTUA 1,276 0
Oljato NTUA 1,276 0
Tsaile-Dine College NTUA 1,190 0
Naschitti-Bisola NTUA 1,173 0
Shonto Junction NTUA 1,146 2
Tonalea-Red Lake NTUA 1,146 0
Carson-Huerfano NTUA 1,142 0
Gap-Cedar Ridge NTUA 1,125 0
LeChee NTUA 1,115 2
Ojo Encino North NTUA 1,108 0
Jeddito NTUA 1,105 0
Dennehotso NTUA 1,040 0
ALPINE DWID 1,030 2
Rock Point NTUA 1,029 0
Red Mesa NTUA 1,023 20
Hard Rock NTUA 982 0
Houck-Querino Canyon NTUA 971 2
Klagetoh NTUA 971 0
Casamero Lake-Smith Lake NTUA 906 0
Toadlena NTUA 903 82
Red Mesa Public Schools 900 0
Round Rock NTUA 876 0
Tsehootsooi Middle School 875 0
Tsa Yah Toh NTUA 865 0
Nazlini NTUA 862 0
Narbona Pass NTUA 862 0
Sawmill NTUA 838 0
Iyanbito NTUA 797 0
Kinlichee NTUA 787 0
Nageezi NTUA 763 0
Rock Point Community School BIA 758 0
Red Valley North NTUA 756 0
Teec Nos Pos NTUA 752 0
Cameron NTUA 742 28
Standing Rock NTUA 739 0
Cove NTUA 728 0
Greasewood Springs Community Boarding School BIA 720 0
Crystal NTUA 715 0
Ganado Public Schools 684 0
Coyote Canyon-Bass Lake NTUA 622 0
Newcomb NTUA 602 0
ASPC APACHE 540 5
Lukachukai Community School new 500 0
White Mesa NTUA 496 0
White Rock-Lake Valley NTUA 492 0
Dzilth-Na-O-Dith-Hle NTUA 462 0
Rough Rock NTUA 455 0
Montezuma Creek NTUA 424 0
Kitsillie-Black Mesa NTUA 414 0
Shonto NTUA 397 0
Buffalo Springs NTUA 397 0
Round Rock Elementary School 396 5
Coal Mine Mesa NTUA 393 0
Oak Springs NTUA (south of Hunters Point) 390 0
Baca-Haystack NTUA 376 0
Mittenrock NTUA 352 6
SANDERS SCHOOL DISTRICT 350 8
Ganado Mission - Sage Memorial Hospital 349 0
Coppermine NTUA 342 2
Wheatfields NTUA 321 3
Todahaidekani NTUA 301 24
Teec Nos Pos Community Boarding School BIA 300 0
Dennehotso Boarding School BIA 300 0
Mexican Water NTUA 294 44
Long House Valley NTUA 277 0
Whitehorse Lake NTUA 277 0
Mexican Springs West Rural NTUA 257 2
Mexican Hat NTUA 239 0
Forest Lake NTUA 233 0
Nazlini Community Boarding School BIA 230 0
Pine Springs NTUA 222 0
Chinle USD 24 Administration Center 220 0
Wide Ruins Community Boarding School BIA 215 0
Casa Del Eco Mesa NTUA 211 0
Rough Rock Demonstration School BIA 200 0
White Post Mission NTUA 185 0
Cottonwood Day School BIA 185 0
Hunters Point Boarding School BIA 173 0
TIMBER KNOLL DWID 153 0
Keyah 1 NAPI NTUA 133 0
Pine Springs Day School BIA 122 0
VERNON DWID 100 2
PINECREST WATER COMPANY 84 0
Kinlichee Staff Housing BIA 80 3
Rare Metals NTUA 72 0
Moenave Community 65 0
Cane Valley NTUA 58 0
Canyon De Chelly National Monument 55 0
Red Rock (Red Valley) Day School BIA 55 0
OJO BONITO ESTATES DWID 54 0
Casamero Cup NTUA 48 0
Boardman Loop NTUA 48 0
Baby Rocks NTUA 44 0
SHOW LOW CROSSROADS HOA 38 2

TRI Facilities (2)

# Facility Total Releases
1 Springerville Generating Station 13.7M lbs
2 Coronado Generating Station 1.9M lbs

Superfund Sites (1)

Site Name Status HRS Score
Lukachukai Mountains Mining District NPL Site 50.00

Cities in Apache (23)

Saint Johns
1 facilities · 1 water
Springerville
1 facilities · 1 water
Ft Defiance
0 facilities · 83 water
Fort Defiance
0 facilities · 11 water
Ganado
0 facilities · 5 water
Chinle
0 facilities · 4 water
Teec Nos Pos
0 facilities · 3 water
Vernon
0 facilities · 3 water
Alpine
0 facilities · 1 water
Chambers
0 facilities · 1 water
Dennehotso
0 facilities · 1 water
Eagar
0 facilities · 1 water
Houck
0 facilities · 1 water
Lukachukai
0 facilities · 1 water
Many Farms
0 facilities · 1 water
Nutrioso
0 facilities · 1 water
Petrified Forest
0 facilities · 1 water
Red Valley
0 facilities · 1 water
Rock Point
0 facilities · 1 water
Saint Michaels
0 facilities · 1 water
Sanders
0 facilities · 1 water
St. Johns
0 facilities · 1 water
Cove, Navajo Nation
0 facilities · 0 water

Frequently Asked Questions

What is the environmental risk level in Apache, Arizona? ▼
Apache, AZ has an environmental risk score of 47/100 (Moderate Risk), based on 2 TRI facilities, 1 Superfund sites, and 125 water systems on record. 29 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Apache? ▼
Yes, Apache, AZ has 1 Superfund site on the EPA National Priorities List (NPL). Superfund sites are contaminated locations that require long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
How many toxic release facilities are in Apache? ▼
Apache, AZ has 2 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 15.5M lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Apache? ▼
In 2024, Apache, AZ recorded a median AQI of 14 and a peak AQI of 57. 99% of monitored days had "Good" air quality (AQI 0–50). Source: EPA Air Quality System (AQS) Annual AQI by County.
Is the drinking water safe in Apache? ▼
Apache, AZ has 125 EPA-regulated water systems. 29 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover Apache? ▼
Environmental compliance in Apache, Arizona is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Arizona state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

What does this county environmental profile show?

This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro