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ZIP 91786

Water quality in Upland, CA (91786)

Drinking water in ZIP 91786 (Upland, San Bernardino County) comes from 51 public water system s on EPA's records. The list below is ranked by population served: the largest regional authority for your area appears first, smaller subdivisions and private systems below.

Combined population served: 2,418,497 people.

Public water systems serving ZIP 91786

Ranked by population served. Tier badges show how EPA records each utility's service area: "Serves your city" means EPA's geographic-areas table specifically lists Upland; "Serves your county" means the utility serves San Bernardino County (regional authorities are usually filed this way); "Billing address at this ZIP" means the utility files paperwork from this ZIP but EPA does not confirm it serves you.

  1. SAN GABRIEL VALLEY WC - FONTANA

    FONTANA · PWSID CA3610041

    Serves 238k people

    Serves your county
  2. SAN BERNARDINO CITY

    SAN BERNARDINO · PWSID CA3610039

    Serves 215k people

    Serves your county
  3. CUCAMONGA VALLEY WATER DISTRICT

    RANCHO CUCAMONGA · PWSID CA3610018

    Serves 211k people

    Serves your county
  4. ONTARIO MUNICIPAL UTILITIES COMPANY

    ONTARIO · PWSID CA3610034

    Serves 185k people

    Serves your county
  5. VICTORVILLE WATER DISTRICT

    VICTORVILLE · PWSID CA3610052

    Serves 136k people

    Serves your county
  6. SAN BERNARDINO VALLEY WD

    SAN BERNARDINO · PWSID CA3610019

    Serves 110k people

    Serves your county
  7. EAST VALLEY WATER DISTRICT

    HIGHLAND · PWSID CA3610064

    Serves 109k people

    Serves your county
  8. WEST VALLEY WATER DISTRICT

    RIALTO · PWSID CA3610004

    Serves 104k people

    Serves your county
  9. HESPERIA WD

    HESPERIA · PWSID CA3610024

    Serves 101k people

    Serves your county
  10. CHINO, CITY OF

    CHINO · PWSID CA3610012

    Serves 86k people

    Serves your county
  11. UPLAND, CITY OF

    UPLAND · PWSID CA3610050

    Serves 78k people

    Serves your city
  12. REDLANDS CITY MUD-WATER DIV

    REDLANDS · PWSID CA3610037

    Serves 78k people

    Serves your county
  13. CHINO HILLS, CITY OF

    CHINO HILLS · PWSID CA3610036

    Serves 76k people

    Serves your county
  14. LIBERTY UTILITIES (AV RANCHOS) CORP.

    DOWNEY · PWSID CA3610003

    Serves 64k people

    Serves your county
  15. MONTE VISTA WD

    MONTCLAIR · PWSID CA3610029

    Serves 56k people

    Serves your county
  16. RIALTO, CITY OF

    RIALTO · PWSID CA3610038

    Serves 54k people

    Serves your county
  17. YUCAIPA VALLEY WATER DISTRICT

    YUCAIPA · PWSID CA3610055

    Serves 52k people

    Serves your county
  18. COLTON, CITY OF

    COLTON · PWSID CA3610014

    Serves 47k people

    Serves your county
  19. ADELANTO, CITY OF

    ADELANTO · PWSID CA3610001

    Serves 40k people

    Serves your county
  20. GOLDEN STATE WATER CO - BARSTOW

    APPLE VALLEY · PWSID CA3610043

    Serves 33k people

    Serves your county
  21. HI DESERT WD

    YUCCA VALLEY · PWSID CA3610073

    Serves 26k people

    Serves your county
  22. BIG BEAR LAKE DWP - BIG BEAR SYSTEM

    BIG BEAR LAKE · PWSID CA3610044

    Serves 26k people

    Serves your county
  23. LOMA LINDA, CITY OF

    LOMA LINDA · PWSID CA3610013

    Serves 25k people

    Serves your county
  24. PHELAN PINON HILLS CSD

    PHELAN · PWSID CA3610120

    Serves 24k people

    Serves your county
  25. RIVERSIDE HIGHLAND WATER COMPANY

    GRAND TERRACE · PWSID CA3610057

    Serves 20k people

    Serves your county
  26. TWENTYNINE PALMS WATER DISTRICT

    TWENTYNINE PALMS · PWSID CA3610049

    Serves 19k people

    Serves your county
  27. US ARMY FORT IRWIN

    FORT IRWIN · PWSID CA3610705

    Serves 16k people

    Serves your county
  28. LOMA LINDA UNIVERSITY

    LOMA LINDA · PWSID CA3600152

    Serves 15k people

    Serves your county
  29. USMC - 29 PALMS

    TWENTYNINE PALMS · PWSID CA3610703

    Serves 15k people

    Serves your county
  30. SBDNO COUNTY SERVICE AREA 64

    SAN BERNARDINO · PWSID CA3610121

    Serves 15k people

    Serves your county
  31. MUSCOY MWC NO. 1

    SAN BERNARDINO · PWSID CA3610031

    Serves 13k people

    Serves your county
  32. SBDNO COUNTY SERVICE AREA 70J

    SAN BERNARDINO · PWSID CA3610125

    Serves 13k people

    Serves your county
  33. BIG BEAR CITY CSD

    BIG BEAR CITY · PWSID CA3610008

    Serves 13k people

    Serves your county
  34. CRESTLINE VILLAGE CWD - DIVISION 10

    CRESTLINE · PWSID CA3610015

    Serves 12k people

    Serves your county
  35. CALIFORNIA INSTITUTION FOR MEN

    CHINO · PWSID CA3610850

    Serves 11k people

    Serves your county
  36. NEEDLES, CITY OF

    NEEDLES · PWSID CA3610032

    Serves 8,766 people

    Serves your county
  37. WESTERN HEIGHTS WATER COMPANY

    YUCAIPA · PWSID CA3610053

    Serves 7,705 people

    Serves your county
  38. LAKE ARROWHEAD CSD

    LAKE ARROWHEAD · PWSID CA3610005

    Serves 7,038 people

    Serves your county
  39. JOSHUA BASIN WATER DISTRICT

    JOSHUA TREE · PWSID CA3610025

    Serves 6,640 people

    Serves your county
  40. HELENDALE COMMUNITY SERVICE DISTRICT

    HELENDALE · PWSID CA3610112

    Serves 6,347 people

    Serves your county
  41. GOLDEN STATE WATER CO - APPLE VLY SOUTH

    APPLE VALLEY · PWSID CA3610107

    Serves 6,208 people

    Serves your county
  42. GLEN HELEN WATER SYSTEM

    SAN BERNARDINO · PWSID CA3600108

    Serves 5,900 people

    Serves your county
  43. RUNNING SPRINGS WATER DISTRICT

    RUNNING SPRINGS · PWSID CA3610062

    Serves 5,268 people

    Serves your county
  44. GOLDEN STATE WATER CO - WRIGHTWOOD

    APPLE VALLEY · PWSID CA3610047

    Serves 4,177 people

    Serves your county
  45. SHEEP CREEK WATER COMPANY

    PHELAN · PWSID CA3610109

    Serves 4,002 people

    Serves your county
  46. BIGHORN - DESERT VIEW WATER AGENCY

    YUCCA VALLEY · PWSID CA3610009

    Serves 3,916 people

    Serves your county
  47. GILBERT STREET COMPLEX

    SAN BERNARDINO · PWSID CA3600215

    Serves 3,833 people

    Serves your county
  48. SAN ANTONIO WATER COMPANY

    UPLAND · PWSID CA3610085

    Serves 3,441 people

    Serves your county
  49. MARYGOLD MWC

    BLOOMINGTON · PWSID CA3610028

    Serves 3,055 people

    Serves your county
  50. HIGH DESERT DETENTION CENTER

    ADELANTO · PWSID CA3601182

    Serves 3,035 people

    Serves your county
  51. GREEN VALLEY MWC

    GREEN VALLEY LAKE · PWSID CA3610023

    Serves 2,993 people

    Serves your county

More for CA

How we matched ZIP 91786: we translate the ZIP to a city and county via the Geonames postal database, then match against service-area cities and counties EPA has on file for each public water system. EPA does not publish authoritative service-area boundary maps for most systems, so there is still some guesswork; large regional authorities (e.g., county-wide water and sewer authorities) are usually filed at the county level even when they serve specific cities. Your water bill names the authoritative utility. Methodology.