California Water Quality
2,871 water systems serving 40,224,650 people. 32,312 total violations on record.
Safety Grade Distribution
A
1,612
56%
B
254
9%
C
774
27%
D
43
1%
F
188
7%
2,871
Water Systems
40,224,650
Population Served
32,312
Total Violations
16,314
Health-Based
Most Contaminated Systems
148 EAST WATER SYSTEM
36 served160 violations158 recent
D
MADERA MH & RV PARK
450 served148 violations144 recent
C
OCOTILLO OASIS, LLC
96 served181 violations141 recent
F
JOHN HOVANNISIAN WATER SYSTEM
80 served206 violations111 recent
C
NORCO, CITY OF
25,068 served96 violations94 recent
C
PICO WD
22,051 served86 violations86 recent
C
FOSTER ROAD MUTUAL WATER COMPANY
150 served89 violations86 recent
C
PAUMA VALLEY WATER COMPANY
185 served146 violations83 recent
F
SIERRA LINDA MUTUAL WATER CO
200 served98 violations78 recent
F
LAND PROJECTS MUTUAL WATER CO.
2,800 served368 violations76 recent
F
Cleanest Water Systems
LOS ANGELES-CITY, DEPT. OF WATER & POWER
3,875,566 served16 violations
A
EAST BAY MUD
1,442,800 served0 violations
A
SAN DIEGO, CITY OF
1,385,379 served36 violations
A
SFPUC CITY DISTRIBUTION DIVISION
848,019 served0 violations
A
EASTERN MUNICIPAL WD
666,581 served0 violations
A
CITY OF FRESNO
545,716 served3 violations
A
CITY OF SACRAMENTO MAIN
520,407 served0 violations
A
LONG BEACH UTILITIES DEPARTMENT
466,772 served3 violations
A
IRVINE RANCH WATER DISTRICT
444,800 served4 violations
A
ALAMEDA COUNTY WATER DISTRICT
344,000 served0 violations
A
Largest Water Systems in California
| Water System | Grade | Population | Violations |
|---|---|---|---|
| LOS ANGELES-CITY, DEPT. OF WATER & POWER | A | 3,875,566 | 16 |
| EAST BAY MUD | A | 1,442,800 | 0 |
| SAN DIEGO, CITY OF | A | 1,385,379 | 36 |
| SAN JOSE WATER | C | 1,039,920 | 10 |
| SFPUC CITY DISTRIBUTION DIVISION | A | 848,019 | 0 |
| EASTERN MUNICIPAL WD | A | 666,581 | 0 |
| CITY OF FRESNO | A | 545,716 | 3 |
| CITY OF SACRAMENTO MAIN | A | 520,407 | 0 |
| LONG BEACH UTILITIES DEPARTMENT | A | 466,772 | 3 |
| IRVINE RANCH WATER DISTRICT | A | 444,800 | 4 |
| CITY OF ANAHEIM | C | 348,593 | 10 |
| ALAMEDA COUNTY WATER DISTRICT | A | 344,000 | 0 |
| CITY OF SANTA ANA | C | 310,539 | 7 |
| RIVERSIDE, CITY OF | A | 298,398 | 0 |
| SANTA CLARITA VALLEY WATER AGENCY | A | 294,090 | 0 |
| GSWC - SOUTHWEST | A | 277,740 | 1 |
| HELIX WATER DISTRICT | A | 277,668 | 0 |
| COACHELLA VWD: COVE COMMUNITY | A | 270,000 | 0 |
| CWS - BAKERSFIELD | A | 267,881 | 0 |
| SAN GABRIEL VALLEY WATER CO.-EL MONTE | C | 248,000 | 12 |
Contaminants in California
Cities in California
LOS ANGELES(16)SAN JOSE(65)OAKLAND(5)SAN DIEGO(5)SACRAMENTO(71)BURLINGAME(8)ANAHEIM(12)PERRIS(1)FRESNO(42)LONG BEACH(2)IRVINE(9)RIVERSIDE(6)SAN BERNARDINO(12)ALHAMBRA(10)FREMONT(3)COVINA(7)HAWTHORNE(5)DOWNEY(9)SANTA ANA(1)NEWHALL(1)EL MONTE(8)LA MESA(1)PALM DESERT(5)MODESTO(16)SPRING VALLEY(5)FONTANA(1)ROSEMEAD(14)STOCKTON(66)OXNARD(13)RANCHO CUCAMONGA(3)RANCHO SANTA MARGARITA(3)HUNTINGTON BEACH(3)CONCORD(7)PASADENA(4)CHULA VISTA(1)GLENDALE(1)CORTE MADERA(1)SANTA ROSA(37)ONTARIO(3)POMONA(2)JURUPA VALLEY(3)PLEASANTON(4)CORONA(5)GARDEN GROVE(1)ESCONDIDO(6)OCEANSIDE(1)LAGUNA HILLS(4)LAKE ELSINORE(1)HAYWARD(2)RIALTO(2)SUNNYVALE(1)SAN DIMAS(6)ROSEVILLE(5)TEMECULA(3)PLACERVILLE(5)FULLERTON(2)BAKERSFIELD(50)VICTORVILLE(2)RANCHO CORDOVA(12)VISTA(1)CLOVIS(8)SANTA CLARA(2)PALMDALE(9)ENCINITAS(2)ORANGE(3)VALLEJO(3)AUBURN(10)FAIRFIELD(3)REDDING(20)SANTA BARBARA(16)DAVIS(3)ANTIOCH(1)VENTURA(6)SAN MARCOS(2)COSTA MESA(3)AZUSA(3)SANTA MARIA(7)HIGHLAND(1)SOUTH LAKE TAHOE(5)TORRANCE(1)IMPERIAL BEACH(1)BURBANK(1)DALY CITY(1)WALNUT(1)HESPERIA(2)PACIFIC GROVE(8)TRACY(9)CHINO(2)ELMIRA(1)SANTA CRUZ(10)MERCED(4)SIMI VALLEY(3)CARLSBAD(2)SANTEE(3)REDWOOD CITY(3)WESTMINSTER(2)HEMET(7)NAPA(15)CAMARILLO(8)MADERA(29)