COUNTY WATER-SYSTEM LEDGER
Orange, California
EPA’s September 2026 export lists 32 active community water systems serving Orange, California, with 0 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Orange, California
EPA associates 32 covered systems with Orange, California; their reported population-served values total 3,190,553 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Irvine Ranch Water DistrictCA3010092 | 444,800 | Surface water | No current violation flagged |
| City Of AnaheimCA3010001 | 348,593 | Surface water | No current violation flagged |
| City Of Santa AnaCA3010038 | 310,539 | Surface water purchased | No current violation flagged |
| City Of Huntington BeachCA3010053 | 201,000 | Surface water purchased | No current violation flagged |
| City Of Garden GroveCA3010062 | 174,226 | Surface water purchased | No current violation flagged |
| Moulton Niguel Water DistrictCA3010073 | 170,236 | Surface water purchased | No current violation flagged |
| Santa Margarita Water DistrictCA3010101 | 168,289 | Surface water purchased | No current violation flagged |
| City Of FullertonCA3010010 | 139,461 | Surface water purchased | No current violation flagged |
| City Of OrangeCA3010027 | 120,770 | Surface water purchased | No current violation flagged |
| Golden State Wc - West Orange CountyCA3010022 | 114,379 | Surface water purchased | No current violation flagged |
| Mesa Water DistrictCA3010004 | 110,000 | Surface water purchased | No current violation flagged |
| City Of WestminsterCA3010064 | 90,911 | Surface water purchased | No current violation flagged |
| Yorba Linda Water DistrictCA3010037 | 84,292 | Surface water purchased | No current violation flagged |
| City Of Buena ParkCA3010003 | 81,998 | Surface water purchased | No current violation flagged |
| City Of Newport BeachCA3010023 | 68,572 | Surface water purchased | No current violation flagged |
| City Of TustinCA3010046 | 66,600 | Surface water purchased | No current violation flagged |
| City Of La HabraCA3010018 | 63,118 | Surface water purchased | No current violation flagged |
| City Of Fountain ValleyCA3010069 | 56,747 | Surface water purchased | No current violation flagged |
| El Toro Water DistrictCA3010079 | 51,800 | Surface water purchased | No current violation flagged |
| City Of San ClementeCA3010036 | 51,545 | Surface water purchased | No current violation flagged |
| Golden State Wc - Placentia/Yorba LindaCA3010035 | 50,381 | Surface water purchased | No current violation flagged |
| City Of BreaCA3010002 | 48,479 | Surface water purchased | No current violation flagged |
| South Coast Water DistrictCA3010042 | 41,118 | Surface water purchased | No current violation flagged |
| Santa Margarita Water District-Id9CA3010030 | 39,684 | Surface water purchased | No current violation flagged |
| City Of Seal BeachCA3010041 | 24,937 | Surface water purchased | No current violation flagged |
| Laguna Beach County WdCA3010017 | 18,404 | Surface water purchased | No current violation flagged |
| City Of La PalmaCA3010100 | 15,948 | Surface water purchased | No current violation flagged |
| Trabuco Canyon Water DistrictCA3010094 | 13,659 | Surface water purchased | No current violation flagged |
| Golden State Wc - Cowan HeightsCA3010047 | 6,997 | Surface water purchased | No current violation flagged |
| Serrano Water DistrictCA3010082 | 5,659 | Surface water purchased | No current violation flagged |
| Joint Regional Water Supply SystemCA3010071 | 3,947 | Surface water purchased | No current violation flagged |
| East Orange County Wd - RzCA3010068 | 3,464 | Surface water purchased | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Orange, California
EPA classifies 32 systems serving Orange, California across 2 primary-source categories; Surface water purchased is the largest category with 30 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.