Apache, AZ

Compiled by PlainEnviro Editorial, Environmental Data Editorial Team · July 13, 2026

Moderate Risk (42/100)

A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against every other tracked county rather than against fixed national thresholds.

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

Apache, AZ is tracked across three EPA datasets covering 2 Toxics Release Inventory (TRI) facilities, 127 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 42/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.

Industrial disclosures inside the county total 15.5M lbs of reported toxic releases under EPCRA Section 313, while 29 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 14 and a peak AQI of 57 in 2024, with 99% of observed days rated "Good" (0–50).

All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.

Population

65,680

TRI Facilities

Water Systems

127

Superfund Sites

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)	Median AQI	Max AQI
2024	350 (99%)	2	0	14	57
2023	362 (99%)	2	1	13	106
2022	359 (99%)	4	0	11	57
2021	353 (98%)	6	0	15	90
2020	356 (98%)	8	0	14	63

2024 Good Air Quality: 99% of days

Median AQI: 14

Source: EPA Air Quality System (AQS) Annual AQI by County 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 (127)

System	City	Source	Population	Violations	Health
Farmington Rural-Shiprock-Beclabito NTUA	Ft Defiance	Surface Water	15,233	4	Yes
Fort Defiance-Window Rock-St Michaels NTUA	Ft Defiance	Groundwater	12,869	27	Yes
Chinle-Many Farms-Del Muerto NTUA	Ft Defiance	Groundwater	8,458	0	–
Tuba City NTUA	Fort Defiance	Groundwater	6,276	0	–
Pinon-District 4 NTUA	Ft Defiance	Groundwater	5,195	0	–
Dilkon-Indian Wells-Greasewood-White Cone NTUA	Fort Defiance	Groundwater	4,986	105	Yes
EAGAR TOWN OF	Eagar	Groundwater	4,590	0	–
Mariano Lake-Pinedale-Church Rock NTUA	Ft Defiance	Groundwater	4,562	0	–
Crownpoint-Littlewater-Three Mile Point NTUA	Ft Defiance	Groundwater	3,950	0	–
Ganado-Burnside-Cornfield-Steamboat NTUA	Ft Defiance	Groundwater	3,947	3	Yes
Kayenta NTUA	Ft Defiance	Groundwater	3,844	0	–
ST JOHNS CITY OF	Saint Johns	Groundwater	3,500	0	–
Leupp-Birdsprings-Tolani Lake NTUA	Ft Defiance	Groundwater	2,100	2	Yes
Bread Springs-Chichiltah NTUA	Ft Defiance	Groundwater	2,066	0	–
Sweetwater NTUA	Ft Defiance	Surface Water	2,014	37	Yes
SPRINGERVILLE TOWN OF	Springerville	Groundwater	1,972	13	Yes
Sanostee-Tocito NTUA	Ft Defiance	Groundwater	1,953	0	–
Torreon-Ojo Encino East - NTUA	Fort Defiance	Surface Water	1,951	0	–
New Lands NTUA	Ft Defiance	Groundwater	1,905	0	–
Twin Lakes NTUA	Ft Defiance	Groundwater	1,833	2	Yes
PETRIFIED FOREST NP	Petrified Forest	Groundwater	1,742	0	–
Tohatchi-Mexican Springs-Twin Lakes NTUA	Ft Defiance	Groundwater	1,669	0	–
Lukachukai NTUA	Ft Defiance	Groundwater	1,659	0	–
Defiance NTUA	Ft Defiance	Groundwater	1,659	0	–
Red Rock NTUA	Ft Defiance	Groundwater	1,652	0	–
Thoreau West-John Willie Camp-Baca NTUA	Ft Defiance	Groundwater	1,611	0	–
Kaibeto NTUA	Ft Defiance	Groundwater	1,590	0	–
Rock Springs Community - NTUA	Fort Defiance	Groundwater	1,574	0	–
Many Farms Community School BIA	Many Farms	Groundwater	1,506	1	Yes
Aneth NTUA	Ft Defiance	Groundwater	1,481	71	Yes
Inscription House-Navajo Mountain NTUA	Ft Defiance	Groundwater	1,368	0	–
Cottonwood-Tselani NTUA	Ft Defiance	Groundwater	1,334	0	–
Chilchinbeto NTUA	Ft Defiance	Groundwater	1,276	0	–
Oljato NTUA	Ft Defiance	Groundwater	1,276	0	–
Tsaile-Dine College NTUA	Ft Defiance	Groundwater	1,190	0	–
Naschitti-Bisola NTUA	Ft Defiance	Groundwater	1,173	0	–
Shonto Junction NTUA	Ft Defiance	Groundwater	1,146	2	Yes
Tonalea-Red Lake NTUA	Ft Defiance	Groundwater	1,146	0	–
Carson-Huerfano NTUA	Ft Defiance	Surface Water	1,142	0	–
Gap-Cedar Ridge NTUA	Fort Defiance	Groundwater	1,125	0	–
LeChee NTUA	Ft Defiance	Surface Water	1,115	2	Yes
Ojo Encino North NTUA	Ft Defiance	Surface Water	1,108	0	–
Jeddito NTUA	Ft Defiance	Groundwater	1,105	0	–
Dennehotso NTUA	Ft Defiance	Groundwater	1,040	0	–
ALPINE DWID	Alpine	Groundwater	1,030	2	Yes
Rock Point NTUA	Ft Defiance	Groundwater	1,029	0	–
Houck-Querino Canyon NTUA	Ft Defiance	Groundwater	1,023	2	Yes
Red Mesa NTUA	Ft Defiance	Surface Water	1,023	20	Yes
Hard Rock NTUA	Ft Defiance	Groundwater	982	0	–
Klagetoh NTUA	Ft Defiance	Groundwater	971	0	–
Casamero Lake-Smith Lake NTUA	Ft Defiance	Groundwater	906	0	–
Toadlena NTUA	Ft Defiance	Groundwater	903	81	Yes
Red Mesa Public Schools	Teec Nos Pos	Surface Water	900	0	–
Round Rock NTUA	Ft Defiance	Groundwater	876	0	–
Tsehootsooi Middle School	Fort Defiance	Groundwater	875	0	–
Tsa Yah Toh NTUA	Ft Defiance	Groundwater	865	0	–
Nazlini NTUA	Ft Defiance	Groundwater	862	0	–
Narbona Pass NTUA	Ft Defiance	Groundwater	862	0	–
Sawmill NTUA	Ft Defiance	Groundwater	838	0	–
Iyanbito NTUA	Ft Defiance	Groundwater	797	0	–
Kinlichee NTUA	Ft Defiance	Groundwater	787	0	–
Nageezi NTUA	Ft Defiance	Surface Water	763	0	–
Rock Point Community School BIA	Rock Point	Groundwater	758	0	–
Red Valley North NTUA	Ft Defiance	Groundwater	756	0	–
Teec Nos Pos NTUA	Ft Defiance	Surface Water	752	0	–
Cameron NTUA	Fort Defiance	Groundwater	742	28	Yes
Standing Rock NTUA	Ft Defiance	Groundwater	739	0	–
Cove NTUA	Ft Defiance	Groundwater	728	0	–
Greasewood Springs Community Boarding School BIA	Ganado	Groundwater	720	0	–
Crystal NTUA	Ft Defiance	Groundwater	715	0	–
Ganado Public Schools	Ganado	Groundwater	684	0	–
Coyote Canyon-Bass Lake NTUA	Ft Defiance	Groundwater	622	0	–
Newcomb NTUA	Ft Defiance	Groundwater	602	0	–
ASPC APACHE	St. Johns	Groundwater	540	3	Yes
Lukachukai Community School new	Lukachukai	Groundwater	500	0	–
White Mesa NTUA	Fort Defiance	Groundwater	496	0	–
White Rock-Lake Valley NTUA	Ft Defiance	Groundwater	492	0	–
Dzilth-Na-O-Dith-Hle NTUA	Ft Defiance	Surface Water	462	0	–
Rough Rock NTUA	Ft Defiance	Groundwater	455	0	–
Montezuma Creek NTUA	Ft Defiance	Groundwater	424	0	–
Kitsillie-Black Mesa NTUA	Ft Defiance	Groundwater	414	0	–
Shonto NTUA	Ft Defiance	Groundwater	397	0	–
Buffalo Springs NTUA	Ft Defiance	Groundwater	397	0	–
Round Rock Elementary School	Teec Nos Pos	Groundwater	396	5	Yes
Coal Mine Mesa NTUA	Fort Defiance	Groundwater	393	0	–
Oak Springs NTUA (south of Hunters Point)	Ft Defiance	Groundwater	390	0	–
Baca-Haystack NTUA	Ft Defiance	Groundwater	376	0	–
Mittenrock NTUA	Ft Defiance	Groundwater	352	6	Yes
SANDERS SCHOOL DISTRICT	Sanders	Groundwater	350	7	Yes
Ganado Mission - Sage Memorial Hospital	Ganado	Groundwater	349	0	–
Coppermine NTUA	Ft Defiance	Groundwater	342	2	Yes
Wheatfields NTUA	Ft Defiance	Groundwater	321	3	Yes
Todahaidekani NTUA	Ft Defiance	Surface Water	301	24	Yes
Teec Nos Pos Community Boarding School BIA	Teec Nos Pos	Groundwater	300	0	–
Dennehotso Boarding School BIA	Dennehotso	Groundwater	300	0	–
Mexican Water NTUA	Ft Defiance	Surface Water	294	44	Yes
Long House Valley NTUA	Ft Defiance	Groundwater	277	0	–
Whitehorse Lake NTUA	Ft Defiance	Surface Water	277	0	–
Mexican Springs West Rural NTUA	Ft Defiance	Groundwater	257	2	Yes
Mexican Hat NTUA	Ft Defiance	Groundwater	239	0	–
Forest Lake NTUA	Ft Defiance	Groundwater	233	0	–
Nazlini Community Boarding School BIA	Ganado	Groundwater	230	0	–
Pine Springs NTUA	Ft Defiance	Groundwater	222	0	–
Chinle USD 24 Administration Center	Chinle	Groundwater	220	0	–
Wide Ruins Community Boarding School BIA	Chambers	Groundwater	215	0	–
Casa Del Eco Mesa NTUA	Ft Defiance	Groundwater	211	0	–
Rough Rock Demonstration School BIA	Chinle	Groundwater	200	0	–
White Post Mission NTUA	Ft Defiance	Groundwater	185	0	–
Cottonwood Day School BIA	Chinle	Groundwater	185	0	–
Hunters Point Boarding School BIA	Saint Michaels	Groundwater	173	0	–
TIMBER KNOLL DWID	Vernon	Groundwater	153	0	–
Keyah 1 NAPI NTUA	Ft Defiance	Groundwater	133	0	–
Pine Springs Day School BIA	Houck	Groundwater	122	0	–
VERNON DWID	Eagar	Groundwater	100	1	Yes
PINECREST WATER COMPANY	Nutrioso	Groundwater	84	0	–
Kinlichee Staff Housing BIA	Ganado	Groundwater	80	3	Yes
Rare Metals NTUA	Fort Defiance	Groundwater	72	0	–
Moenave Community	Fort Defiance	Groundwater	65	0	–
Cane Valley NTUA	Ft Defiance	Groundwater	58	0	–
Canyon De Chelly National Monument	Chinle	Groundwater	55	0	–
Red Rock (Red Valley) Day School BIA	Red Valley	Groundwater	55	0	–
OJO BONITO ESTATES DWID	Vernon	Groundwater	54	0	–
Casamero Cup NTUA	Ft Defiance	Groundwater	48	0	–
Boardman Loop NTUA	Ft Defiance	Groundwater	48	0	–
Baby Rocks NTUA	Ft Defiance	Groundwater	44	0	–
OLD CONCHO WATER USERS	Concho	Groundwater	40	0	–
SHOW LOW CROSSROADS HOA	Vernon	Groundwater	38	1	Yes

TRI Facilities (2)

#	Facility	City	Industry	Total Releases
1	Springerville Generating Station	Springerville	Electric Utilities	13.7M lbs
2	Coronado Generating Station	Saint Johns	Electric Utilities	1.9M lbs

Cities in Apache (3)

Saint Johns

Pop: -

1 facilities · 1 water

Springerville

Pop: -

1 facilities · 1 water

Cove, Navajo Nation

Pop: -

0 facilities · 0 water

Frequently Asked Questions

What is the environmental risk level in Apache, Arizona? ▼

Apache, AZ has an environmental risk score of 42/100 (Moderate Risk), based on 2 TRI facilities, 0 Superfund sites, and 127 water systems on record. 29 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.

Are there Superfund sites in Apache? ▼

No Superfund National Priorities List (NPL) sites are currently registered in Apache, AZ in the EPA database.

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 127 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 Editorial