U.S. water systems

EPA Region 9 Water Systems

EPA Region 9

411 community water systems on record — 235 active, 176 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace EPA Region 9’s official records. Always confirm current status with EPA Region 9 before making decisions based on this information.

All community water systems in EPA Region 9

System name	City	Population served	Status
Aguirre MHP	Indio	60	Active
Ak Chin	Sells	120	Inactive
Ak Chin Nursing Home	Sells	400	Inactive
Ak Chin Village	—	25	Inactive
Ak-Chin Village	Maricopa	11,646	Active
Anegam	SELLS	232	Inactive
Angelique Maelee Properties	Indio	50	Active
Arellano MHP	Thermal	30	Active
Arizona Village	Needles	3,211	Active
Arviso - Mobile Home Park	Pauma Valley	70	Active
Avi Casino	Needles	3,001	Active
Avi Kwa Ame Farms North	Needles	40	Active
B.I.A. ANETH BRD SC	ANETH	25	Inactive
B.I.A. COLORADO RIV	PARKER	400	Inactive
B.I.A. DUCK VALLEY	OWYHEE	550	Inactive
B.I.A. LAKE VALLEY	LAKE VALLEY	175	Inactive
B.I.A. NAVAJO MTN.	NAVAJO MOUNTAIN	50	Inactive
B.I.A. POLACCA SCH.	POLACCA	25	Inactive
B.I.A. STEWART H.S.	CARSON CITY	550	Inactive
BABY ROCKS TRADING POST	BABY ROCKS	25	Inactive
BACA COMMUNITY - NTUA	FT. DEFIANCE	265	Inactive
Baca Prewitt Watering Point	Fort Defiance	100	Inactive
Bacavi Village	Hotevilla	943	Active
Barajas MHP	Thermal	25	Active
Barona North	Lakeside	1,171	Active
Battle Mountain	Battle Mountain	195	Active
Battle Mountain (Old)	BATTLE MOUNTAIN	200	Inactive
Bear River - Tish Non Village	Loleta	650	Active
Bear River/Singley Hill	Loleta	1,530	Active
Bermuda Palms	Parker	172	Active
BIA HOOPA SYSTEM	HOOPA	180	Inactive
BIA Keams Canyon	Keams Canyon	925	Active
BIA Truxton Agency	Valentine	16	Active
Big Fields	SELLS	150	Inactive
Big Lagoon Rancheria	—	25	Inactive
Big Pine Paiute Band	Big Pine	600	Active
Big River Development	Parker	3,550	Active
Big Sandy Rancheria	Auberry	408	Active
Big Valley Rancheria Water District	Lakeport	417	Active
Bishop Paiute-Shoshone Tribe	Bishop	2,735	Active
BLUE GAP/TACHEE-O&M (SU81)	—	575	Inactive
BLUEWATER MARINA	PARKER	200	Inactive
Bodie Flats Mobile Home Park	Gardnerville	81	Inactive
Bread Springs Day School (New) - BIA	CROWNPOINT	102	Inactive
Bread Springs Day School (Present) - BIA	Gallup	102	Inactive
Cababi	SELLS	57	Inactive
California Village	Needles	1,290	Active
Cameron Community - NTUA	Fort Defiance	795	Inactive
Campo Church Road System (HUD Homes)	Campo	400	Active
Castro Ranch	Thermal	44	Active
Charco 27	Sells	70	Active
Chemehuevi Homesite #2	HAVASU LANDING	25	Inactive
Chemehuevi Water	Havasu Lake	4,400	Active
Chi Chil Tah Jones Ranch Community School - BIE	Washington	137	Active
Choulic	Sells	82	Inactive
Chui Chu	Sells	420	Active
CHURCH ROCK COMM.-NTUA (84)	—	1,430	Inactive
Coal Mine Mesa - NTUA	Fort Defiance	334	Inactive
Cockleburr	Sells	90	Inactive
Cocopah Bend RV & Golf Resort	Somerton	1,095	Active
Cocopah East	Somerton	280	Active
Cocopah North	SOMERTON	150	Inactive
Cocopah West	Somerton	325	Active
Cold Fields	Sells	147	Inactive
Cold Springs Flats	Tollhouse	150	Inactive
Cold Springs Main	Tollhouse	209	Active
Cold Springs Subdivision	Tollhouse	35	Active
Colorado River Regional Water System	Parker	8,490	Active
Colusa Northern System	Colusa	67	Active
Colusa Southern System	Colusa	3,474	Active
Comobabi Intertie	Sells	240	Active
COPPERMINE - NTUA (SU87)	—	825	Inactive
COPPERMINE CHAPTER - O&M	FT. DEFIANCE	25	Inactive
CORNFIELDS COMM - NTUA	CORNFIELDS	180	Inactive
Cortina Rancheria	Williams	19	Inactive
Covered Wells Regional	Sells	740	Active
Cowlic	Sells	120	Active
COYOTE VALLEY RANCH.	REDWOOD VALLEY	25	Inactive
Coyote Valley System	Redwood Valley	850	Active
CRIT Farms	PARKER	36	Inactive
Crowhang	Sells	130	Inactive
Crownpoint Boarding School - BIA	Window Rock	1,024	Inactive
CRYSTAL/YAZZIE SPRING - O&M	FT. DEFIANCE	72	Inactive
CUYAPAIPE COMMUNITY	—	25	Inactive
DALTON PASS CHAP.-O&M	FT. DEFIANCE	587	Inactive
DD Mobile Home Park	Thermal	300	Active
Desert Rose MHP	Coachella	30	Active
Dibe Yazhi Habitiin (Borrego Pass) Day School-BIE	Washington	120	Active
Dirt Burn / Kupk	WHITERIVER	100	Inactive
Dishchii Bikoh Community School - BIA Charter	White River	622	Active
Duck Valley Newtown	Owyhee	450	Active
Duck Valley Owyhee	Owyhee	150	Active
Duckwater	Duckwater	166	Active
Duro Mobile Home Park (Desert)	Thermal	25	Inactive
Duro Water System	Valley Center	35	Active
Dzilthnaodithhle Boarding School - BIE	Window Rock	400	Active
East Fork Lutheran	—	270	Inactive
EAST HOOPA VALLEY SYSTEM	HOOPA	1,000	Inactive
EAST WHITERIVER	WHITERIVER	25	Inactive
Eastern Navajo Agency - BIE	Washington	455	Active
El Mesquite MHP	Thermal	48	Active
EL PASO N G-W.ROCK/ST.MICHAELS	EL PASO	100	Inactive
EL PASO NG-LEUPP STATION	FLAGSTAFF	80	Inactive
Fallon-Paiute Shoshone Tribe	Fallon	1,200	Active
Former Pueblo Pintado Boarding School - BIA	Window Rock	103	Inactive
Fort Bidwell Reservation	Fort Bidwell	88	Active
Fort Independence	Independence	120	Active
Fort McDowell Community	Fountain Hills	7,260	Active
Fort Wingate Community	Washington	550	Active
Fresnal	Sells	105	Active
Ft. McDermitt Paiute-Shoshone - Lower	McDermitt	456	Active
Ft. McDermitt Paiute-Shoshone - Upper	McDermitt	110	Active
Gamez MHP	Thermal	48	Active
Gap / Cedar Ridge - NTUA	Fort Defiance	1,148	Inactive
Garcia MHP	Thermal	25	Active
Gonzalez MHP	Thermal	41	Active
Goshute (8-Mile)	—	25	Inactive
Goshute (Lower)	Ibapah	40	Active
Goshute (Upper)	Ibapah	40	Active
GOULDINGS WATER SYS	MONUMENT VALLEY	40	Inactive
Grand Canyon West	Peach Springs	3,120	Active
Greater Santa Rosa Regional	Sells	1,352	Active
GRIC Blackwater	—	25	Inactive
GRIC DPW Aerodyne	Sacaton	35	Active
GRIC DPW Casa Blanca_Bapchule	Sacaton	2,603	Active
GRIC DPW Sacaton	Sacaton	5,307	Active
GRIC DPW Stotonic	Sacaton	2,566	Active
GRIC DPW Wild Horse Pass	Sacaton	22,795	Active
GRIC Lone Butte - DPW	Sacaton	65	Inactive
GRIC Pee Posh Water (Maricopa Colony) - DPW	SACATON	665	Inactive
GRIC St. Johns - DPW	Sacaton	2,500	Inactive
GRIC Sweetwater - DPW	Sacaton	125	Inactive
Grindstone Rancheria	Elk Creek	150	Active
Gunsight (Schuchuligk)	Sells	40	Active
Hanaadli Huerfano Boarding School - BIE	Washington	65	Active
HAT CK-CHRISTIE SYST	HAT CREEK	25	Inactive
HAT CREEK - JENKINS	HAT CREEK	31	Inactive
HAT CREEK - WILSON	GEN.DELIVERY HC	53	Inactive
Havasu Water Company	Havasu Lake	361	Active
Havasupai Village	Supai	885	Active
Hickiwan	SELLS	301	Inactive
Hondah Homesites	Whiteriver	450	Inactive
Hoopa Telescope Spring System	—	25	Inactive
Hoopa Valley-Wide System	Hoopa	3,500	Active
Hopi High School - BIA	Keams Canyon	1,005	Active
Hopi Veterans Center	Kykotsmovi	388	Active
Hotevilla Village	Hotevilla	1,601	Active
Hotevilla/Bacavi Community School	Hotevilla	260	Inactive
Howonquet Community(Smith River)	Smith River	220	Active
HUC Regional Water System	Flagstaff	0	Active
Hungry Valley (Reno-Sparks)	Reno	620	Active
HUNTERS POINT COMM.-NTUA(SU83	—	850	Inactive
Indian Village	Mecca	35	Active
IONE INDIAN COMM.	—	25	Inactive
Jackrabbit	Sells	40	Active
Jackson Rancheria	—	25	Inactive
Juaneno (San Pascual Res)	—	25	Inactive
Juniper Village and Red Hills	Pipe Spring	84	Inactive
Kaibab Village	Pipe Spring	407	Active
Kaka	Sells	150	Active
Kashia	Santa Rosa	153	Active
Kerwo Intertie	Sells	233	Active
Kohatk	Sells	80	Active
Kykotsmovi	Kykotsmovi	1,302	Active
La Cienega MHP	Whittier	30	Active
La Jolla - Upper	PAUMA VALLEY	150	Inactive
La Jolla Eastern	Pauma Valley	1,076	Active
La Jolla Western	Pauma Valley	296	Active
La Posta Lower Community	Boulevard	60	Active
La Posta Upper	Boulevard	73	Active
LA VIDA MISSION	FARMINGTON	230	Inactive
Las Vegas Paiute Colony	Las Vegas	100	Active
Las Vegas Paiute Snow Mountain	Las Vegas	2,340	Active
LAVEEN INDIAN CHILD.	LAVEEN	40	Inactive
Lee Bar Ranch	Cazenovia	91	Inactive
Little Tucson	Sells	328	Active
LITTLEWATER-NTUA	FT. DEFIANCE	160	Inactive
Lone Pine	Lone Pine	535	Active
Los Coyotes	Warner Springs	114	Active
LOS TULES SYSTEM	WARNER SPRINGS	30	Inactive
Lost Lake Resort	Parker	355	Active
Lower Moencopi - Spring Source	Tuba City	465	Active
LUPTON SOUTH - NTUA	FT. DEFIANCE	94	Inactive
Lytton Rancheria Water System	Windsor	600	Active
MADERA EMPLOYT CTR	MADERA	100	Inactive
Manchester Rancheria	Point Arena	100	Active
MANY FARMS COMM - NTUA	FT DEFIANCE	350	Inactive
Mariano Lake Community School - BIA	Window Rock	267	Inactive
Mazzetti Trailer Park	Valley Center	24	Inactive
Menager's Dam (Ali Chuk)	Sells	212	Inactive
Mesa Grande - Black Canyon	Santa Ysabel	81	Active
Mesa Grande (Tract 2)	Santa Ysabel	43	Active
Mesquite Creek	Needles	650	Active
MEXICAN SPRING COMM. NTUA	FT. DEFIANCE	460	Inactive
Middletown Rancheria Community Water System	Middletown	487	Active
Mishongnovi (Upper Sipaulovi/Upper Mishongnovi)	Second Mesa	490	Active
Mission View Mobile Home Park (Tucson Water Consec	Sells	1,125	Active
Mitomkai Tribal Water System	Willits	300	Active
Moccasin Domestic Water Improvement District	Fredonia	96	Active
Moenave Community	Window Rock	32	Inactive
Montano Ranch	Thermal	72	Active
MONUMENT VALLEY MIS	MONUMENT VALLEY	160	Inactive
Mora MHP	Whittier	25	Active
Morongo	Banning	16,000	Active
MULHOLLAND WELL COMM-O&M(SU82	—	120	Inactive
Muro Trailer Park	Pala	68	Active
NAVAJO COMMUNITY-NTUA (SU83)	—	3,150	Inactive
NAVAJO GOSPEL MISSION (SU81)	—	65	Inactive
New Fields	Sells	67	Active
Nixon	Nixon	800	Active
Nolic Intertie	Sells	168	Inactive
North Komelic	Sells	120	Inactive
Oasis Mobile Home Park	Thermal	1,350	Active
Old Campo	Campo	102	Active
OLJATO COMMUNITY	OLJATO	130	Inactive
Original Sherwood Valley Rancheria	Willits	60	Active
Pala North	Pala	14,280	Active
Pala South	Pala	360	Active
Palo Verde Stand	SELLS	105	Inactive
Pan Tak	SELLS	28	Inactive
Pauma	Pauma Valley	5,700	Active
Peach Springs	Peach Springs	1,865	Active
Pechanga	Temecula	29,100	Active
Pia Oik	Sells	50	Inactive
Pine View Estates	Gardnerville	225	Inactive
Pisinemo Intertie	Sells	472	Active
Pit River Montgomery Creek Rancheria	Burney	90	Active
Pit River XL Rancheria	Burney	61	Active
Point Arena Rancheria	Point Arena	616	Active
Polacca	Polacca	3,890	Active
PTUA, HAVANA NAKYA	SELLS	116	Inactive
Pueblo Pintado Community School (New) - BIA	Cuba	160	Active
Pulikla Tribe	Klamath	70	Active
Quartz Valley Indian Community	Fort Jones	200	Inactive
Quechan Utility	Yuma	5,660	Active
Queens Well	Sells	64	Active
RAINBOW VILLAGE	RAINBOW VILLAGE	60	Inactive
Ramon Zaragoza Water	Thermal	51	Active
Ranchos Los Ferro MHP	Thermal	41	Active
Rare Metals - NTUA	Fort Defiance	81	Inactive
Red Hawk Casino - Shingle Springs	Shingle Springs	11,268	Active
RED MESA COMM, NTUA	FT. DEFIANCE	120	Inactive
RED ROCK - O&M	FT. DEFIANCE	100	Inactive
Redding Rancheria	Redding	2,015	Active
Redwood Valley Rancheria	Redwood Valley	152	Active
Reno Sparks Indian Colony	Reno	457	Active
Rincon Northern	Valley Center	7,003	Active
Rincon Paradise Creek	Valley Center	305	Active
Rite of Passage	SCHURZ	30	Inactive
Rite of Passage - ATC	Yerington	150	Inactive
River Reflections Estates	Earp	267	Active
River Shore Estates	EARP	34	Inactive
Riverfront RV Park	Yuma	0	Inactive
Riverview Mobile and RV Park	Earp	277	Inactive
Robin Lawson Trailer Park	Thermal	150	Inactive
ROBINSON RANCH.	NICE	25	Inactive
Rock Springs Community - NTUA	Fort Defiance	1,574	Active
Rodriguez MHP	Coachella	45	Active
Round Valley Agency	Covelo	84	Active
Round Valley Della Davis	Covelo	30	Inactive
Round Valley Piner	Covelo	409	Active
Ruiz MHP	Mecca	46	Active
Sage Memorial Hospital	Ganado	519	Inactive
Salt River Landfill	Scottsdale	38	Active
Salt River Lehi	Scottsdale	652	Active
Salt River North Mesa	Scottsdale	100	Active
Salt River Public Works	Scottsdale	20,951	Active
San Carlos Apache Health Center	Peridot	2,085	Active
San Felipe Water System	Santa Ysabel	52	Active
San Luis	SELLS	25	Inactive
SAN LUIS (GU ACHI)	SAN LUIS	25	Inactive
San Miguel	Sells	275	Inactive
San Pasqual District A	Valley Center	1,225	Active
San Pasqual District B	Valley Center	705	Active
San Pedro	Sells	135	Active
San Simon	SELLS	25	Inactive
San Simon School and Village	Sells	300	Inactive
San Xavier Ord (East)	Sells	390	Active
San Xavier West	Sells	1,511	Active
SAN YSIDRO SYSTEM	WARNER SPRINGS	35	Inactive
Sandoval MHP	Thermal	38	Active
Santa Cruz	SELLS	35	Inactive
Santa Rosa Ranch Intertie	Sells	165	Active
Santa Rosa Rancheria	Lemoore	1,000	Active
Santa Rosa Reservation	Anza	185	Active
Santa Rosa Subdivision	SELLS	25	Inactive
Santa Rosa Village	SELLS	438	Inactive
Santa Ysabel Canyon	Santa Ysabel	50	Inactive
Santa Ysabel Main	Santa Ysabel	325	Active
Santillanes Mobile Home Park	—	30	Inactive
SCUA Beverly Hills	San Carlos	612	Active
SCUA Bylas	San Carlos	3,160	Active
SCUA Cutter	San Carlos	574	Active
SCUA Gilson Wash	San Carlos	3,200	Inactive
SCUA Lower Peridot	San Carlos	702	Active
SCUA Lower Peridot Bush	San Carlos	342	Active
SCUA Peridot Heights	San Carlos	2,700	Inactive
SCUA Skill Center	San Carlos	234	Active
SCUA Soda Canyon	San Carlos	185	Inactive
SCUA Upper Peridot	San Carlos	275	Active
SCUA Upper Seven Mile	San Carlos	8,478	Active
Second Mesa Day School - BIA	Second Mesa	255	Active
Second Mesa Day School (old)	Second Mesa	224	Inactive
Sells Intertie	Sells	4,000	Active
SENECA LAKE	SAN CARLOS	25	Inactive
Shackleford Creek Community Water System	Fort Jones	80	Active
Shanel Tribal Utility District	Hopland	250	Active
SHEEPSPRINGS SOUTH-NTUA	FT. DEFIANCE	270	Inactive
SHERMAN IND HI SCHL	RIVERSIDE	800	Inactive
SHONTO CHAPTER/HEADSTART SCH.	SHONTO	50	Inactive
SHONTO TRADING POST	SHONTO	25	Inactive
Shungopavi	Second Mesa	1,430	Active
Sikul Himatk	Sells	40	Inactive
SIL NAKYA COMMUNITY - PTUA	SELLS	51	Inactive
Sipaulovi (Lower Sipaulovi/Lower Mishongnovi)	Second Mesa	609	Active
Six Mile and Steamboat Village	Pipe Spring	88	Active
Soboba	San Jacinto	3,000	Active
SOCTISH-CHENONE DIST	HOOPA	150	Inactive
South Campo	Campo	63	Active
South Fork (Te-Moak)	Elko	40	Active
South Komelic	Sells	135	Inactive
Spider Mound	Keams Canyon	103	Inactive
Spider Mound Intertie	—	70	Inactive
STEWART BOARDING SCH	STEWART	550	Inactive
Stewart Village	Big Pine	15	Inactive
Susanville Upper Rancheria	Susanville	190	Active
Sutcliffe	Nixon	250	Active
Sycuan	El Cajon	12,350	Active
Table Bluff (New) Reservation	Loleta	230	Active
TABLE BLUFF RANCHERIA	LOLETA	40	Inactive
Table Mountain Housing	—	25	Inactive
Table Mountain Rancheria	Friant	10,675	Active
Table Mountain Upper	Friant	410	Inactive
TALIMAN SPRING	FT DEFIANCE	60	Inactive
THOREAU BOARDING SCH-BIA (SU82	GALLUP	200	Inactive
Thoreau High School	Thoreau	664	Inactive
TOCC	Sells	280	Active
TOCITO	TOCITO	245	Inactive
Toledo MHP	Thermal	68	Active
Tonto Apache	Payson	2,580	Active
Topawa Intertie	Sells	1,318	Active
Torreon-Ojo Encino East - NTUA	Fort Defiance	1,864	Active
Torres-Martinez - Allotment 135	—	25	Inactive
Torres-Martinez Avenue 64	Thermal	180	Active
Torres-Martinez Clinic	Thermal	379	Active
Town of Parker	Parker	3,360	Active
Tse' Yi' Gai High School	Gallup	126	Active
Tuba City Boarding School - BIA	Tuba City	2,040	Inactive
Tuba City Community - NTUA	Fort Defiance	6,732	Inactive
Tubatulabal - Miranda	WELDON	60	Inactive
Tule River Apple Valley	Porterville	25	Active
Tule River Apple Valley	Porterville	25	Inactive
Tule River Cow Mountain	Porterville	45	Inactive
Tule River Reservation Main	Porterville	2,560	Active
Tuolumne Me-Wuk Ridgeline	Tuolumne	30	Active
Turner Trailer Park	Valley Center	70	Active
TWIN BUTTES COMM.-O&M (SU84)	—	30	Inactive
Upper Covered Wells	SELLS	40	Inactive
Upper Lake Dewell System	UPPER LAKE	93	Inactive
Upper Lake Hardisty System	Upper Lake	98	Active
Upper Moenkopi	Tuba City	1,740	Active
UPPER PECWAN SYSTEM	WEITCHPEC ROUTE	40	Inactive
Utu Utu Gwaitu Paiute Tribe	Benton	222	Active
Valadores MHP	—	25	Inactive
Vamori	Sells	125	Active
VAN ZEE COMM.-O&M (SU87)	FT. DEFIANCE	100	Inactive
Vargas MHP	Indio	35	Active
Vaya Chin Intertie	Sells	1,151	Active
Vee's Trailer Park	Winterhaven	30	Inactive
Ventana	Sells	80	Active
Viejas Casino	ALPINE	25	Inactive
Viejas Community System	Alpine	9,600	Active
Wadsworth	Nixon	950	Active
Walker River Paiute Tribe	Schurz	662	Active
Washoe Tribe Carson Colony	Gardnerville	450	Active
Washoe Tribe Dresslerville Community	Gardnerville	452	Active
Washoe Tribe Stewart	Gardnerville	150	Active
Washoe Tribe Woodfords	Gardnerville	250	Active
WELK WAU TRAILER PK	KLAMATH	50	Inactive
WEST HOOPA VALLY SYSTEM	HOOPA	1,200	Inactive
White Mesa - NTUA	Fort Defiance	376	Inactive
WHITEHORSE LAKE PRESCH-O&M(82)	—	80	Inactive
Whitehorse Pass (Shopishk)	Sells	40	Inactive
Wingate Elementary School (New) - BIE	Washington	800	Active
Wingate High School - BIE	Window Rock	900	Active
WMATUA Canyon Day	—	25	Inactive
WMATUA Carrizo	Whiteriver	228	Active
WMATUA Cedar Creek	WHITERIVER	320	Inactive
WMATUA Cibecue	Whiteriver	2,590	Active
WMATUA East Fork/7 Mile	—	25	Inactive
WMATUA Ft. Apache	WHITERIVER	25	Inactive
WMATUA Hondah-McNary	Whiteriver	2,988	Active
WMATUA Miner Flat	Whiteriver	15,570	Active
WMATUA N. Fork/Diamond Creek	—	25	Inactive
WMATUA Upper East Fork	—	25	Inactive
WMATUA Whiteriver	WHITERIVER	5,500	Inactive
Yavapai Apache - Camp Verde	Camp Verde	177	Active
Yavapai Apache - Clarkdale	Camp Verde	555	Active
Yavapai Apache - Middle Verde	Camp Verde	2,200	Active
Yavapai Apache - Tunlii	Camp Verde	450	Inactive
Yerington (Campbell Ranch)	Yerington	512	Active
Yocha Dehe Community Area	Brooks	230	Inactive
Yocha Dehe Potable Water System	Brooks	12,800	Active
Yomba Indian Reservation	Austin	30	Active
Yurok - Blake	Klamath	25	Inactive
Yurok - Kepel	Klamath	76	Active
Yurok - McCoy - Kenek	Klamath	30	Active
Yurok - Requa	Klamath	215	Active
Yurok - Terwer Water System	Klamath	300	Active
Yurok - Wautec	Klamath	96	Active
Yurok - Weitchpec	Klamath	120	Active