San Jose, CA · Kern County
Water quality in San Jose, CA
69 community water systems are based in San Jose, CA, collectively serving 3,389,570 people. See per-utility violations, contaminants, and lead service line status.
At a glance
- Community systems
- 69
- People served
- 3.4M
- Groundwater systems
- 46%
- 32 systems
- Surface water systems
- 54%
- 37 systems
Community water systems based in San Jose
Systems whose EPA-filed administrative city is San Jose, sorted by population served. Regional authorities that serve San Jose but are based elsewhere are not listed here; check the ZIP lookup for a service-area-based answer.
- 1. SAN JOSE WATER
Santa Clara · PWSID CA4310011
1.0M served - 2. CWS - BAKERSFIELD
Kern · PWSID CA1510003
268k served - 3. CALIFORNIA WATER SERVICE - STOCKTON
San Joaquin · PWSID CA3910001
176k served - 4. BAKERSFIELD, CITY OF
Kern · PWSID CA1510031
160k served - 5. CALIFORNIA WATER SERVICE CO. - ELA
Los Angeles · PWSID CA1910036
152k served - 6. CWS - VISALIA
Tulare · PWSID CA5410016
148k served - 7. CALIFORNIA WATER SERVICE CO. - DOMINGUEZ
Los Angeles · PWSID CA1910033
144k served - 8. CWSC SALINAS
Monterey · PWSID CA2710010
124k served - 9. CAL-WATER SERVICE CO.-CHICO
Butte · PWSID CA0410002
115k served - 10. GREAT OAKS WC INC
Santa Clara · PWSID CA4310022
110k served - 11. CALIFORNIA WATER SERVICE - SAN MATEO
San Mateo · PWSID CA4110008
102k served - 12. CITY OF SAN JOSE - EVG/EDV/COY
Santa Clara · PWSID CA4310020
101k served - 13. CALIFORNIA WATER SERVICE CO. - HERM/REDO
Los Angeles · PWSID CA1910134
97k served - 14. CALIFORNIA WATER SERVICE CO. - PALOS VER
Los Angeles · PWSID CA1910104
71k served - 15. CWSC LOS ALTOS SUBURBAN
Santa Clara · PWSID CA4310001
70k served - 16. CALIFORNIA WATER SERVICE-S SAN FRANCISCO
San Mateo · PWSID CA4110009
64k served - 17. CALIFORNIA WATER SERVICE - BEAR GULCH
San Mateo · PWSID CA4110006
61k served - 18. CALIFORNIA WATER SERVICE - LIVERMORE
Alameda · PWSID CA0110003
60k served - 19. CITY OF SAN JOSE - NSJ/ALVISO
Santa Clara · PWSID CA4310019
46k served - 20. HAWTHORNE-CITY WATER DEPT.
Los Angeles · PWSID CA1910047
45k served - 21. CALIFORNIA WATER SERVICE - SAN CARLOS
San Mateo · PWSID CA4110007
35k served - 22. CWS - SELMA
Fresno · PWSID CA1010024
27k served - 23. CWS - NORTH GARDEN
Kern · PWSID CA1510055
23k served - 24. CALIFORNIA WATER SERVICE CO - WESTLAKE
Ventura · PWSID CA5610016
20k served - 25. CALIFORNIA WATER SERVICE CO.-TRAVIS AFB
Solano · PWSID CA4810701
18k served - 26. CITY OF CUPERTINO
Santa Clara · PWSID CA4310018
16k served - 27. CWSC KING CITY
Monterey · PWSID CA2710009
16k served - 28. CAL-WATER SERVICE CO.-MARYSVILLE
Yuba · PWSID CA5810001
12k served - 29. CAL-WATER SERVICE CO.-OROVILLE
Butte · PWSID CA0410005
11k served - 30. CALIFORNIA WATER SERVICE CO. - DIXON
Solano · PWSID CA4810002
11k served - 31. CAL-WATER SERVICE CO.-WILLOWS
Glenn · PWSID CA1110003
7,240 served - 32. CWSC SALINAS HILLS
Monterey · PWSID CA2710012
5,293 served - 33. COMMERCE-CITY, WATER DEPT.
Los Angeles · PWSID CA1910050
4,205 served - 34. TESORO VIEJO MASTER MWC, INC.
Madera · PWSID CA2010017
3,885 served - 35. CWSC OAK HILLS
Monterey · PWSID CA2710019
3,161 served - 36. CWS - KERNVILLE
Kern · PWSID CA1510033
2,572 served - 37. LUCERNE WATER CO. - CAL WATER SERVICE
Lake · PWSID CA1710005
2,129 served - 38. CWSC LAS LOMAS
Monterey · PWSID CA2710013
2,084 served - 39. CAL-WATER SERVICE CO.-HAMILTON CITY
Glenn · PWSID CA1110002
1,799 served - 40. CALIFORNIA WATER SERVICE CO.-LANCASTER
Los Angeles · PWSID CA1910010
1,387 served - 41. CWS SOUTHLAKE SYSTEM
Kern · PWSID CA1510039
1,112 served - 42. WESTFIELD GARDEN MOBILE HOME PARK
PWSID TX1011947
942 served - 43. CALIFORNIA WATER SERVICE CO-LAKE HUGHES
Los Angeles · PWSID CA1910242
929 served - 44. CALIFORNIA WATER SERVICE CO-LEONA VALLEY
Los Angeles · PWSID CA1910243
878 served - 45. CWS - LOWER BODFISH WATER SYSTEM
Kern · PWSID CA1510056
736 served - 46. CWS - TULCO WATER COMPANY
Tulare · PWSID CA5410041
716 served - 47. CEDAR GROVE MOBILE HOME PARK
PWSID TX0500043
595 served - 48. MISSION OAKS MOBILE HOME PARK
San Benito · PWSID CA3510006
550 served - 49. RIVERBEND MHP
PWSID OK3007232
500 served - 50. ARMSTRONG VALLEY-CAL WATER SERVICE (PUC)
Sonoma · PWSID CA4910018
473 served - 51. COAST SPRINGS - CAL. WATER SERVICE (PUC)
Marin · PWSID CA2110007
388 served - 52. CWS - UPPER BODFISH WATER SYSTEM
Kern · PWSID CA1510026
307 served - 53. MT. PLEASANT WATER USERS ASSOCIATION
Santa Clara · PWSID CA4300563
300 served - 54. CWS - LAKELAND
Kern · PWSID CA1510049
294 served - 55. CWS-ONYX WATER SYSTEM
Kern · PWSID CA1510043
284 served - 56. CWS-SPLIT MOUNTAIN WATER SYSTEM
Kern · PWSID CA1500407
226 served - 57. LONGHORN MOBILE HOME COMMUNITY
PWSID TX1010587
220 served - 58. CWS - FREMONT VALLEY
Kern · PWSID CA1500333
167 served - 59. BELLA LAGO MOBILE HOME PARK
Lake · PWSID CA1700610
152 served - 60. ROSEVIEW HEIGHTS MUTUAL WATER COMPANY
Santa Clara · PWSID CA4300562
148 served - 61. KENNON WATER COMPANY
Santa Clara · PWSID CA4300521
142 served - 62. CWS - MULLEN WATER COMPANY
Tulare · PWSID CA5400935
138 served - 63. CWS-GRAND OAKS WATER SYSTEM
Kern · PWSID CA1500374
122 served - 64. RANCHO DEL PARADISO-CAL WATER SVC (PUC)
Sonoma · PWSID CA4900514
94 served - 65. LAKE SAN ANTONIO MHP WS
Monterey · PWSID CA2701906
84 served - 66. HAWKINS WATER CO-CAL WATER SERVICE (PUC)
Sonoma · PWSID CA4900546
81 served - 67. NOEL HEIGHTS-CAL WATER SERVICE (PUC)
Sonoma · PWSID CA4900785
79 served - 68. ABORN HEIGHTS WATER MUTUAL ASSOCIATION
Santa Clara · PWSID CA4300792
45 served - 69. SANTA CLARA VALLEY WATER DISTRICT
Santa Clara · PWSID CA4310027
0 served