Riverside County, California Water Systems

Riverside County, California

227 community water systems on record — 93 active, 134 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 Riverside County, California

System name	Mailing city	Population served	Status
EASTERN MUNICIPAL WD	PERRIS	666,581	Active
RIVERSIDE, CITY OF	RIVERSIDE	298,398	Active
COACHELLA VWD: COVE COMMUNITY	PALM DESERT	270,000	Active
ELSINORE VALLEY MWD	LAKE ELSINORE	169,455	Active
CORONA, CITY OF	CORONA	168,575	Active
RANCHO CALIFORNIA WATER DISTRICT	TEMECULA	146,147	Active
JURUPA COMMUNITY SD	JURUPA VALLEY	135,093	Active
WESTERN MWD	RIVERSIDE	86,062	Active
INDIO WATER AUTHORITY	INDIO	84,757	Active
DESERT WATER AGENCY	PALM SPRINGS	74,807	Active
BEAUMONT CHERRY VALLEY WD	BEAUMONT	66,841	Active
LAKE HEMET MWD	HEMET	52,913	Active
COACHELLA WATER AUTHORITY	COACHELLA	43,590	Active
MISSION SPRINGS WD	DESERT HOT SPRINGS	43,484	Active
WESTERN MWD	RIVERSIDE	41,549	Inactive
RUBIDOUX COMMUNITY SD	JURUPA VALLEY	36,827	Active
HEMET, CITY OF	HEMET	33,828	Active
BANNING, CITY OF	BANNING	31,680	Active
NORCO, CITY OF	NORCO	25,068	Active
COACHELLA VALLEY CWD	COACHELLA	25,000	Inactive
COACHELLA VALLEY CWD	COACHELLA	23,650	Inactive
TEMESCAL VALLEY WATER DISTRICT	TEMESCAL VALLEY	21,971	Active
SAN JACINTO, CITY OF	SAN JACINTO	18,950	Active
WESTERN MWD - MURRIETA DIVISION	RIVERSIDE	17,453	Active
SOUTH MESA WC	CALIMESA	10,108	Active
BLYTHE - CITY OF	BLYTHE	9,798	Active
MYOMA DUNES MUTUAL WATER COMPANY	BERMUDA DUNES	9,445	Active
COACHELLA VALLEY CWD	COACHELLA	8,000	Inactive
PERRIS, CITY OF	PERRIS	7,854	Inactive
NUEVO WATER COMPANY	NUEVO	6,733	Active
SANTA ANA RIVER WATER COMPANY	JURUPA VALLEY	5,848	Active
COACHELLA VWD: I.D. NO. 8	PALM DESERT	4,600	Active
LAKE ELSINORE-CITY	LAKE ELSINORE	4,500	Inactive
NORTH PERRIS WATER SYSTEM	PERRIS	4,500	Inactive
CALIFORNIA REHABILITATION CENTER - NORCO	NORCO	4,300	Active
CHUCKAWALLA VALLEY STATE PRISON	BLYTHE	4,090	Active
FARM MUTUAL W.C. (THE)	WILDOMAR	4,026	Active
IDYLLWILD WATER DISTRICT	IDYLLWILD	3,762	Active
CALIF REHABILITATION CENTER	NORCO	3,400	Inactive
BOX SPRINGS MUTUAL WC	MORENO VALLEY	3,382	Active
HOME GARDENS COUNTY WD	CORONA	3,095	Active
ELSINORE VALLEY MWD - TEMESCAL	LAKE ELSINORE	2,294	Inactive
ELSINORE WD - COUNTRY CLUB	LAKE ELSINORE	2,256	Inactive
ELSINORE WD - LAKELAND	LAKE ELSINORE	2,017	Inactive
CABAZON WATER DISTRICT	CABAZON	2,010	Active
PINE COVE WATER DISTRICT	IDYLLWILD	1,540	Active
SUNNYMEAD MUTUAL WATER CO	MORENO VALLEY	1,257	Inactive
GLEN IVY HOT SPRINGS	CORONA	1,087	Active
KNOCTI HARBOR INN	LOWER LAKE	1,000	Inactive
FERN VALLEY WD	IDYLLWILD	900	Active
PLANTATION ON THE LAKE PARK	CALIMESA	897	Active
HARRY V SLACK DWS	CALIMESA	805	Inactive
RIVERSIDE CSA #122-MESA VERDE	BLYTHE	766	Active
HIGH VALLEYS WATER DISTRICT	BANNING	733	Active
LAKE HEMET-GARNER VALLEY	HEMET	709	Active
COACHELLA VALLEY WTR DIST	COACHELLA	700	Inactive
CSA 62	—	614	Active
CARVER TRACT MUTUAL WATER COMP	INDIO	600	Active
LAKE HEMET MWD-CAMP GROUND	HEMET	600	Active
BANNING HTS. MUTUAL WATER CO.	BANNING	567	Active
GLEN EDEN SUN CLUB	CORONA	566	Active
BLYTHE - MESA RANCH	BLYTHE	558	Active
SIERRA PINES	—	555	Inactive
FELSPAR GARDENS MWC	RIVERSIDE	552	Inactive
CHIRIACO SUMMIT WATER DIST.	CHIRIACO SUMMIT	544	Active
WEST PALM SPRINGS VILLAGE	DESERT HOT SPRINGS	517	Active
GOLDEN ERA PRODUCTIONS	SAN JACINTO	500	Active
JENSEN WATER CO	—	450	Inactive
COUNTY WATER OF RIVERSIDE	RIVERSIDE	420	Inactive
MIRA LOMA WATER COMPANY	502	417	Inactive
CSA 51	DESERT CENTER	400	Active
PALM SPRINGS CREST	DESERT HOT SPRINGS	399	Active
BLYTHE - HIDDEN BEACHES	BLYTHE	393	Active
FISHERMAN'S RETREAT	REDLANDS	352	Active
LA QUINTA RIDGE MOBILE ESTATES	COSTA MESA	350	Inactive
WALLER TRACT WATER DISTRICT	INDIO	350	Inactive
SAN ANTONIO MOBILE HOME PARK	LA QUINTA	340	Inactive
SHARONDALE MESA HOA	CALIMESA	340	Active
BOE DEL HEIGHTS MUTUAL WATER	INDIO	325	Inactive
COACHELLA VALLEY WTR DIST	COACHELLA	320	Inactive
OASIS GARDENS WATER CO.	COACHELLA	314	Inactive
INTER-COUNTY WATER CO	RIVERSIDE	310	Inactive
BURTON S TRAILER PARK	BLYTHE	305	Inactive
RIVERDALE ESTATES	IRVINE	300	Active
RANCHO CALIMESA MOBILE HOME PARK	CALIMESA	296	Active
SUNBIRD MOBILE HOME PARK	LAGUNA BEACH	258	Inactive
PAUL HADLEY	CABAZON	255	Inactive
RAMONA WATER COMPANY	ANZA	250	Active
MURRIETA PALMS MOBILE HOME PARK	HEMET	237	Active
PINYON PINES COUNTY WATER DIST	MOUNTAIN CENTER	232	Active
AHA QUIN TRAILER PARK	BLYTHE	225	Inactive
ANZA MUTUAL WATER COMPANY	ANZA	224	Active
OLIVET UNIVERSITY	ANZA	212	Active
CHERRY VALLEY WATER COMPANY	CHERRY VALLEY	210	Active
RANCHO CARRILLO MWC	RANCHO MISSION VIEJO	210	Active
RIVERSIDE-HIGHLAND WATER COMPA	2324	204	Inactive
ANZA RV RESORT	ESCONDIDO	203	Active
CROWN RANCH PUMPING COMPANY	CORONA	200	Inactive
MOUNTAIN VIEW MOBILE HOME PARK	ONTARIO	200	Inactive
ALPINE VILLAGE	MOUNTAIN CENTER	198	Active
WESTERN MWD (ID A - RAINBOW)	RIVERSIDE	192	Active
PANORAMA MUTUAL WATER COMPANY	—	186	Inactive
BONITA VISTA MUTUAL WATER COMP	CHERRY VALLEY	180	Inactive
CASTRO TRAILER PARK	COACHELLA	180	Inactive
ORTEGA OAKS RV PARK&CAMPGROUND	LAKE FOREST	180	Active
AMEZCUA - GARCIA WATER	THERMAL	170	Active
Lake Elsinore Village	LAKE ELSINORE	170	Inactive
COACHELLA VWD-BERMUDA DUNES	COACHELLA	162	Inactive
100 PALMS MARKET	THERMAL	160	Inactive
LAKE COTTONWOOD MOBILEHOME PAR	92383	160	Inactive
THOMAS MOUNTAIN WATER COMPANY	MOUNTAIN CENTER	157	Active
STONE CREEK WATER COMPANY	PALM DESERT	152	Active
RECHE CANYON MUTUAL WATER CO.	COLTON	150	Active
COACHELLA VALLEY CWD	COACHELLA	141	Inactive
VALLEY VIEW TRAILER PARK	HOPEWELL	135	Active
CAREFREE MOBILE HOME PARK	LONG BEACH	130	Inactive
COACHELLA VALLEY WTR DIST	COACHELLA	130	Inactive
OAK HAVEN ASSOCIATION	TEMECULA	120	Active
PUERTA LA CRUZ	AGUANGA	120	Inactive
SUNNYSIDE R.V. PARK	FRESNO	120	Inactive
PINYON CREST HOA	PALM DESERT	104	Active
SAGE HILLS FARM	HEMET	102	Inactive
CORONA GROWERS, INC	CORONA	100	Inactive
ELMS MOBILE PARK	PALM DESERT	100	Inactive
LA PENA HOUSING FACILITY	MECCA	100	Inactive
PALM DRIVE TRAILER PARK	DESERT HOT SPRINGS	100	Inactive
THERMAL MUTUAL WATER COMPANY	THERMAL	100	Inactive
TRINITY - CORONA	COLTON	100	Inactive
CASTILE CANYON SCHOOL	GILMAN HOT SPRINGS	96	Inactive
ANZA PINES MOBILE HOME PARK	ANZA	90	Active
COACHELLA VALLEY CWD ID 70	COACHELLA	90	Inactive
DOUBLE R TRAILER PARK	SIERRA MADRE	90	Inactive
BALDY MOUNTAIN RANCH	MOUNTAIN CENTER	80	Active
MOUNTAIN CENTER CAFE	IDYLLWILD	77	Active
BRADFORD RUN RV	AGUANGA	75	Active
BAUTISTA CC NO. 36	HEMET	73	Active
THERMAL PARK	INDIO	73	Active
VARGAS MHP/SAN JOSE COMMUNITY WS	THERMAL	71	Inactive
INDIAN OAKS TRAILER PARK	MURRIETA	70	Active
LA CADENA MWC	RIVERSIDE	70	Inactive
DESERT VIEW TRAILER PARK	LA VERNE	60	Active
BLOCK 77 WATER COMPANY	NORCO	59	Inactive
SANTA CARMELITA #2	—	55	Inactive
HARMONY HAVEN	RIVERSIDE	54	Active
TRAILS END MUTUAL WATER COMPANY	MOUNTAIN CENTER	52	Active
DAN LOUIE	—	50	Inactive
GALINDO HOUSING FACILITY	INDIO	50	Active
SANCHEZ WATER WELL-OOB	THERMAL	50	Inactive
RANCHO CORONA MUTUAL	CORONA	45	Inactive
MESQUITE MUTUAL WATER CO.	COACHELLA	42	Inactive
NORMA MARIA RANCH APTS	111, INDIO 92201	42	Inactive
STONEWOOD CANYON ESTATES	IDYLLWILD	40	Active
WHISPERING SANDS SP	POMONA	37	Inactive
BLYTHE MOBILE HOME ESTATES	VALLEY CENTER	35	Active
MAGNOLIA TRAILER VILLAGE	CORONA	30	Inactive
PARADISE VALLEY MWC	MOUNTAIN CENTER	30	Active
ROSS WELL	MAL 92274	30	Inactive
THUNDERBIRD NORTH WATER COMPAN	SPRINGS 92262	30	Inactive
CHESTER E SRACK	RIVERSIDE	27	Inactive
OAK HILLS ESTATES	—	27	Inactive
RANCHO SAN MIGUEL LABOR CAMP	LA QUINTA	26	Inactive
B & C DAIRY	CORONA	25	Inactive
BOERE, JOHN DAIRY	SUN CITY	25	Inactive
BORGES, JOE	CORONA	25	Inactive
D & D DAIRY	CORONA	25	Inactive
D & D DAIRY	CORONA	25	Inactive
KASBERGEN, CORNELL DAIRY	SAN JACINTO	25	Inactive
KOOLHAAS, KEN DAIRY	CORONA	25	Inactive
OFFINGA DAIRY	LAKEVIEW	25	Inactive
PICO DAIRY	SAN JACINTO92383	25	Inactive
PRECIE, MIKE	PERRIS	25	Inactive
PRECIE, RAYMOND	CORONA	25	Inactive
ROYAL CARRIZO HOA	PALM DESERT	25	Active
SOUTHFIELD, ED DAIRY	LAKEVIEW	25	Inactive
STAR VALLEY	CORONA 9172I	25	Inactive
SYANN DAIRY	CORONA	25	Inactive
TEVELDE, JOHN H. DAIRY	LAKEVIEW	25	Inactive
TJAARDA DAIRY	CORONA	25	Inactive
TULS, JACK & SONS DIARY	SAN JACINTO	25	Inactive
VANDERHAM, NELSON DAIRY	HEMET	25	Inactive
VANDERSCHAAF, ALBERT	CORONA	25	Inactive
VANDERTUIG DAIRY	MIRA LOMA91752	25	Inactive
WESSELINK DAIRY, JULES	WINCHESTER	25	Inactive
Unnamed system (CA3301844)	INDIO	25	Inactive
Unnamed system (CA3301605)	—	25	Inactive
DELARA RANCH	COACHELLLA	24	Inactive
JOSE MONTOYA	INDIO	24	Inactive
MANUELA GARCIA WATER	THERMAL	24	Inactive
KAISER EAGLE MOUNTAIN, LLC	DESERT CENTER	23	Inactive
SHADY ACRES	BERMUDA DUNES	23	Inactive
CASA FINCA	MECCA	20	Inactive
DEL SOL MWC	—	20	Inactive
SAM S FENCE	THERMAL	18	Inactive
MWD - EAGLE MOUNTAIN	LA VERNE	15	Active
SPRING CREST WATER & POWER	ANZA	15	Inactive
INTER-COUNTY WATER CO	CA 92509	14	Inactive
COACHELLA VWD-LAKE CAHUILLA	COACHELLA	10	Inactive
RED MOUNTAIN COMMUNITY WATER	2343	9	Inactive
RIVINO MUTUAL WATER CO	92506	5	Inactive
CALIFORNIA REHABILITATION CENT	—	1	Inactive

Showing the 200 largest of 227 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.