Apache County Water Quality

Name: Water Quality Data for Apache County, Arizona
Creator: PlainEnviro
License: https://creativecommons.org/publicdomain/zero/1.0/

Compiled by PlainEnviro

Arizona

Health Violations

According to EPA SDWIS, Apache County, Arizona hosts 125 community water systems covering about 158,646 people. The same extract lists 509 health-based violation records across 29 systems. Counts are historical EPA registry rows, not a current compliance or drinkability score.

125

Water Systems

158,646

Population Served

509

Health-Based Violation Records

Systems w/ Health Violations

Apache County, Arizona hosts 125 EPA-regulated community water systems delivering drinking water to approximately 158,646 people. Each system is catalogued in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which mandates monitoring for dozens of regulated contaminants, public notification when standards are exceeded, and the issuance of an annual Consumer Confidence Report.

PlainEnviro's health-based SDWIS extract shows 509 violation records across these active community systems, with 29 systems carrying at least one record. The extract excludes monitoring and reporting violations. The county contains 23 incorporated places where these systems deliver service. 1 Superfund site is also listed within the county.

A historical health-based registry row does not establish water delivered today or describe current compliance. For current conditions, request the utility's most recent Consumer Confidence Report or contact the Arizona drinking water program. Figures shown here reflect only the health-based subset fetched from federal EPA SDWIS.

What water systems serve Apache County?

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

How does Apache County compare in Arizona?

Of the 15 Arizona counties with at least one community water system on file, Apache County ranks #2 by number of systems (125).

Either side of it: Maricopa County (177), Pima County (120), Yavapai County (77)

What are Apache County's health-based records for?

Apache County's health-based violation records carry 8 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results, and a historical record does not establish present water quality.

Contaminant	Records	Systems	Most recent
Arsenic	280	8	2025
Tthm	160	5	2024
Revised Total Coliform Rule	32	14	2025
Combined Radium (-226 and -228)	10	1	2019
Coliform (TCR)	9	4	2015
Groundwater Rule	8	4	2024
Lead and Copper Rule Revisions	5	3	2024
Combined Uranium	5	1	2017

Superfund Sites in Apache County

Site Name	City	NPL Status	Site Score
Lukachukai Mountains Mining District	Cove, Navajo Nation	NPL Site	50.00

About This Data

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.

Figures here are the current EPA SDWIS extract joined to the 125 community water systems whose service area falls in Apache County, ranked against the 15 Arizona counties with at least one system on file. Data current as of 2026-08-25. Editorial standards, methodology, report an error.

A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.

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

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Data sourced from the U.S. Environmental Protection Agency (EPA). See our methodology for details. Retrieved and formatted by PlainEnviro