Monterey County, California Water Systems

Monterey County, California

355 community water systems on record — 157 active, 198 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 August 1, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.

Community water systems in Monterey County, California

System name	Mailing city	Population served	Status
CWSC SALINAS	SAN JOSE	123,679	Active
CAL AM WATER COMPANY - MONTEREY	PACIFIC GROVE	92,450	Active
ALCO WATER SERVICE	SALINAS	56,253	Active
MARINA COAST WATER DISTRICT	MARINA	38,377	Active
SOLEDAD, CITY OF	SOLEDAD	19,455	Active
GREENFIELD, CITY OF	GREENFIELD	18,967	Active
CWSC KING CITY	SAN JOSE	16,334	Active
GONZALES, CITY OF	GONZALES	8,327	Active
CASTROVILLE COMMUNITY SERVICES DISTRICT	CASTROVILLE	7,515	Active
PSMCSD - PAJARO	ROYAL OAKS	6,500	Active
CWSC SALINAS HILLS	SAN JOSE	5,293	Active
CORRECTIONAL TRAINING FACILITY - SOLEDAD	SOLEDAD	4,269	Active
CORRECTIONAL TRAINING FACILITI	SOLEDAD	4,100	Inactive
CORRECTIONAL TRAINING FACILITY	SOLEDAD	4,100	Inactive
CWSC OAK HILLS	SAN JOSE	3,161	Active
SOLEDAD STATE CORRECTIONAL FAC	—	3,000	Inactive
SALINAS VALLEY STATE PRISON	SOLEDAD	2,930	Active
SEASIDE MUNICIPAL WATER SYSTEM	SEASIDE	2,800	Active
FORT HUNTER LIGGETT	FORT HUNTER LIGGETT	2,753	Active
LITTLE BEAR WATER COMPANY	SOLEDAD	2,327	Active
CWSC LAS LOMAS	SAN JOSE	2,084	Active
TASCO SPRECKELS WATER COMPANY	SALINAS	1,772	Active
CAL AM WATER COMPANY - CHUALAR	PACIFIC GROVE	1,139	Active
CAL AM WATER COMPANY - HIDDEN HILLS	PACIFIC GROVE	1,106	Active
CAL AM WATER COMPANY - TORO	PACIFIC GROVE	1,065	Active
HIGHWAY 156 WATER SYSTEM #3	CASTROVILLE	1,048	Inactive
CARMEL VALLEY	MONTEREY	1,000	Inactive
CAL AM WATER COMPANY - AMBLER PARK	PACIFIC GROVE	980	Active
SANTA LUCIA PRESERVE WS	CARMEL	966	Active
PSMCSD - NORMCO	ROYAL OAKS	928	Active
PSMCSD - SUNNY MESA	ROYAL OAKS	880	Active
CAL AM WATER COMPANY - BISHOP	PACIFIC GROVE	704	Inactive
CWSC COUNTRY MEADOWS	SAN JOSE	621	Inactive
NEPENTHE WS	BIG SUR	618	Active
CSP-PFEIFFER BIG SUR	BIG SUR	585	Active
CARMEL RIVIERA MWC	CARMEL	584	Active
SAN ARDO WD	SAN ARDO	575	Active
BUENA VISTA WC	SAN JOSE	550	Inactive
GABILAN WC	SALINAS	535	Active
INDIAN SPRINGS MWS - INACTIVE	SALINAS	531	Inactive
PSMCSD - MOSS LANDING HARBOR WS	ROYAL OAKS	520	Active
CABANA HOLIDAY WS	IRVINE	506	Active
PSMCSD - VEGA RD WS #01	ROYAL OAKS	438	Active
POST RANCH INN WS	BIG SUR	416	Active
TOM ADCOCK	SALINAS	400	Inactive
HITCHCOCK RD WS #01	SALINAS	360	Active
CANADA WOODS WC	CARMEL	356	Active
SAN LUCAS COUNTY WATER DISTRICT	SAN LUCAS	315	Active
PRUNEDALE MWC	SALINAS	277	Active
PEDRAZZI MWC	SALINAS	273	Active
QUEEN MOTEL WS	CASTROVILLE	250	Inactive
SAN JERARDO COOP WS	SALINAS	249	Active
ESALEN INSTITUTE WS	BIG SUR	246	Active
COUNTRYSIDE ESTATES MWC	SALINAS	243	Active
MONTEREY DUNES MWA	MOSS LANDING	243	Active
POND-DEROSA OAKS WC	FREMONT	216	Active
PARADISE LAKE MUTUAL WATER CO.	SALINAS	213	Active
MORO RD WS #09	SALINAS	210	Active
PARADISE RD WS #09	SALINAS	206	Active
CAL WATKINS	—	200	Inactive
PSMCSD - SPRINGFIELD WS	ROYAL OAKS	200	Active
COLONIAL OAK WC INC	SALINAS	198	Active
VENTANA BIG SUR INN WS	BIG SUR	193	Active
ROLLING HILLS RANCHO WA	SALINAS	185	Active
BISHOP WATER COMPANY	MONTEREY	184	Inactive
FERNWOOD WS	BIG SUR	184	Active
FOOTHILL ESTATES WS	SALINAS	183	Active
ACA MAGGIO CARL JOSEPH INC	KING CITY	180	Inactive
LITTLE BEAR WATER COMPANY	—	170	Inactive
STRUVE RD WS #02	ELVERTA	166	Active
WILDWOOD WC	SALINAS	166	Inactive
PSMCSD - VIERRA ESTATES WS	ROYAL OAKS	164	Active
LAGUNA SECA WC	SALINAS	162	Active
MERRILL GARDENS IRIS CANYON WS	MONTEREY	161	Active
CANYON MOBILE HOME PARK	SALINAS	160	Inactive
CALIFORNIA ORCHARD WS	KING CITY	150	Active
EVERETT S HILLIARD	—	150	Inactive
HERB FLEMING	—	150	Inactive
JOE SILVA	2ND STREET, EXTENSION	150	Inactive
TASSAJARA SPRINGS WS	CARMEL VALLEY	150	Active
EL CAMINO WC INC	SALINAS	133	Active
KIRK CREEK CAMPGROUND	MONTEREY	132	Inactive
ARROYO CENTER WC	GREENFIELD	130	Active
COASTLANDS MWS (POST CREEK)	BIG SUR	129	Active
VALLEY CREEK MHP WS	BULVERDE	129	Active
ASSISI MWC	SALINAS	126	Active
CAMPHORA APARTMENTS	HAYWARD	126	Active
PRINCES CAMP RESORT WS	SALINAS	126	Active
CLEAR RIDGE WA	BIG SUR	123	Active
BLUFFS WS	SALINAS	120	Active
DOLAN RD MWC	MOSS LANDING	120	Active
HEPSEDAM MUTUAL	KING CITY	120	Inactive
MIKE MULLINS	—	120	Inactive
PESANTE RD WS #02	SALINAS	120	Active
HIDDEN CANYON RANCH MWC	SALINAS	116	Active
PAUL OLIVETE	—	110	Inactive
VIRGINIA ACRES WATER COMPANY	1	109	Inactive
HOLLY HILLS MWC	SALINAS	108	Active
VALLEY OAKS MHP WS	LOCKWOOD	108	Active
OAK HEIGHTS W & R CO INC	SALINAS	105	Active
ASOLEADO MWC	CARMEL VALLEY	101	Active
BILL CRINKLAW	KING CITY	100	Inactive
RANCHO BORROMEO MWC	SALINAS	100	Active
SAN MIGUEL WS #01	ROYAL OAKS	100	Active
CAL AM WATER COMPANY - RALPH LANE	PACIFIC GROVE	96	Active
SUMMERHILL MHP WS	SANTA CRUZ	95	Active
LOMAS DEL SOL MWS	AROMAS	93	Active
SAN MIGUEL WS #22	SALINAS	93	Active
MCCOY RD WS #05	SALINAS	92	Active
OAK MANOR WS	SALINAS	92	Active
RANCHO FIESTA	CARMEL VALLEY	92	Inactive
ROBLEY PROPERTY MWS	SALINAS	92	Active
VISTA DEL TORO WS	CORRAL DE TIERRA	92	Active
ENCINAL RD WS #01	SALINAS	91	Active
MESA DEL TORO MWC	SALINAS	90	Active
SPRING CANYON WA	—	90	Active
TULARCITOS MWC	CARMEL VALLEY	90	Active
HIDDEN VALLEY WA	SALINAS	87	Active
IVERSON & JACKS APTS WS	SALINAS	86	Active
MIRAMONTE CONSERVATION CAMP	SOLEDAD	85	Inactive
CASTROVILLE BLVD	SALINAS	84	Inactive
LAKE SAN ANTONIO MHP WS	SAN JOSE	84	Active
PSMCSD - LANGLEY/VALLE PACIFICO WS	ROYAL OAKS	81	Active
DEPT. OF CORRECTIONS	SOLEDAD	80	Inactive
BLACKIE RD WS #05	SALINAS	78	Active
STRAWBERRY RD WS #06	WATSONVILLE	78	Active
TULARACITOS MUTUAL WATER CO	CARMEL VALLEY	78	Inactive
APPLE AVE WS #02	GREENFIELD	75	Active
HARBOR VIEW WA	SALINAS	75	Active
LONOAK RD WS #02 CLOSED	Salinas	75	Inactive
MANZANITA HILLS WA	ROYAL OAKS	75	Active
GLENN AVE WS #01	SALINAS	73	Active
WOODSIDE WA	CARMEL VALLEY	73	Active
ARROYO SECO ESTATES MWS	SOLEDAD	70	Active
EDDIE KOBAYASHI	—	70	Inactive
LOS CARNEROS MWA	AROMAS	70	Active
SAN VICENTE MWC	SOLEDAD	69	Active
SLEEPY HOLLOW MUTUAL WATER CO	CARMEL	69	Inactive
MORO COJO MWA	PRUNEDALE	67	Active
MURPHY HILL WS #02	AROMAS	66	Active
OAKRIDGE SUBDIVISION MWCCLOSED	AROMAS	66	Inactive
VIERRA KNOLLS MWC	SALINAS	66	Active
GARLEN COURT WS	SALINAS	65	Active
HIDDEN VIEWS MHP WS	KING CITY	65	Active
MURPHY HILL WS #01	AROMAS	65	Active
RIVER RD WS #25	GONZALES	65	Active
VIERRA MEADOWS MWC	SALINAS	65	Active
LEAFWOOD COMMUNITY WA	SALINAS	64	Active
LOS LAURELES GR WATER SYS #3	SALINAS	64	Inactive
PIONEER PLACE MWS	AROMAS	64	Active
LAMAR STREET WATER SYSTEM #2	1	63	Inactive
PRADO STREET WATER SYSTEM #1	901	63	Inactive
Z RANCH MWC	SALINAS	62	Active
APPLE AVE WS #03	GREENFIELD	60	Inactive
DELANY WC	ROYAL OAKS	60	Active
DOUG BRAY	LOCKWOOD	60	Inactive
ELKHORN RD WS #04	WATSONVILLE	60	Active
FRANK OSHITA	ALES	60	Inactive
FRANK VARGAS	—	60	Inactive
MARINA SUNSET 1	MARINA	60	Inactive
NORTH SHORE ESTATES WS	BRADLEY	60	Active
O E MAYOU	LLE	60	Inactive
PSMCSD - BLACKIE RD WS	ROYAL OAKS	60	Active
ROBERT HANSEN	—	60	Inactive
ROYAL OAK PLACE WS	ROYAL OAKS	60	Active
SADAO MATSUNAMI	—	60	Inactive
CHETMOORE ACRES WA	ROYAL OAKS	59	Active
THIMIO MWC	PRUNEDALE	59	Active
RANCHO CHAPARRAL MWC	BIG SUR	58	Active
TIERRA MEADOWS HOA WS	SALINAS	58	Active
WOODLAND HEIGHTS MWC	PRUNEDALE	57	Active
DESMOND RD WS #03	SALINAS	56	Active
GREEN ACRES WA	CASTROVILLE	56	Active
JOST POST WA	SALINAS	56	Active
RONALD N NUNES	SALINAS	56	Inactive
CACHAGUA MUTUAL WS (#4)	CARMEL VALLEY	55	Active
DEL MONTE FARMS RD WS #03	CASTROVILLE	55	Active
CORDA RD WS	SALINAS	54	Active
TIERRA VISTA MWC	SALINAS	54	Active
APRICOT LN WS	ROYAL OAKS	53	Active
DEMING STOUT	SANTA CRUZ	52	Inactive
PALO COLORADO ASSOCIATION	MONTEREY	52	Inactive
LA CANADA MOBILE ESTATES	—	50	Inactive
PESANTE RD WS #06	SALINAS	50	Active
PETE HERMOSILLO	CITY	50	Inactive
SUN HARVEST	SALINAS	50	Inactive
TIM MIYASAKA	—	50	Inactive
BLACKIE RD WATER SYSTEM 9	SALINAS	49	Inactive
LANGLEY CANYON ROAD WATER SYST	NAS 93901	49	Inactive
SAN JUAN RD WS #01	AROMAS	49	Active
SPRINGPOINT ROAD WATER SYSTEM	—	49	Inactive
BAUMANN RD WS #01	WATSONVILLE	48	Active
MAHER RD WS #05	ROYAL OAKS	48	Active
PARADISE RD WS #21	SALINAS	48	Active
TIERRA VERDE MWC	SALINAS	48	Active
FOOTHILL WA	SALINAS	46	Active
MIDDLEFIELD ROAD WATER SYSTEM	93901	46	Inactive
CORRAL DE TIERRA ESTATES WC	SALINAS	45	Inactive
ECHO VALLEY RD WS #05	SALINAS	45	Active
MOUNT TORO RANCHOS MWA	SALINAS	45	Active

Showing the 200 largest of 355 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.