EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Orange, California

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems32active CWS · pop. 2,500+
Population served3,190,553reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Orange

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
Irvine Ranch Water DistrictCA3010092444,800Surface waterNo current violation flagged
City Of AnaheimCA3010001348,593Surface waterNo current violation flagged
City Of Santa AnaCA3010038310,539Surface water purchasedNo current violation flagged
City Of Huntington BeachCA3010053201,000Surface water purchasedNo current violation flagged
City Of Garden GroveCA3010062174,226Surface water purchasedNo current violation flagged
Moulton Niguel Water DistrictCA3010073170,236Surface water purchasedNo current violation flagged
Santa Margarita Water DistrictCA3010101168,289Surface water purchasedNo current violation flagged
City Of FullertonCA3010010139,461Surface water purchasedNo current violation flagged
City Of OrangeCA3010027120,770Surface water purchasedNo current violation flagged
Golden State Wc - West Orange CountyCA3010022114,379Surface water purchasedNo current violation flagged
Mesa Water DistrictCA3010004110,000Surface water purchasedNo current violation flagged
City Of WestminsterCA301006490,911Surface water purchasedNo current violation flagged
Yorba Linda Water DistrictCA301003784,292Surface water purchasedNo current violation flagged
City Of Buena ParkCA301000381,998Surface water purchasedNo current violation flagged
City Of Newport BeachCA301002368,572Surface water purchasedNo current violation flagged
City Of TustinCA301004666,600Surface water purchasedNo current violation flagged
City Of La HabraCA301001863,118Surface water purchasedNo current violation flagged
City Of Fountain ValleyCA301006956,747Surface water purchasedNo current violation flagged
El Toro Water DistrictCA301007951,800Surface water purchasedNo current violation flagged
City Of San ClementeCA301003651,545Surface water purchasedNo current violation flagged
Golden State Wc - Placentia/Yorba LindaCA301003550,381Surface water purchasedNo current violation flagged
City Of BreaCA301000248,479Surface water purchasedNo current violation flagged
South Coast Water DistrictCA301004241,118Surface water purchasedNo current violation flagged
Santa Margarita Water District-Id9CA301003039,684Surface water purchasedNo current violation flagged
City Of Seal BeachCA301004124,937Surface water purchasedNo current violation flagged
Laguna Beach County WdCA301001718,404Surface water purchasedNo current violation flagged
City Of La PalmaCA301010015,948Surface water purchasedNo current violation flagged
Trabuco Canyon Water DistrictCA301009413,659Surface water purchasedNo current violation flagged
Golden State Wc - Cowan HeightsCA30100476,997Surface water purchasedNo current violation flagged
Serrano Water DistrictCA30100825,659Surface water purchasedNo current violation flagged
Joint Regional Water Supply SystemCA30100713,947Surface water purchasedNo current violation flagged
East Orange County Wd - RzCA30100683,464Surface water purchasedNo current violation flagged

02 / SOURCE MIX

Surface water purchased30 systems · 2,397,160 served
Surface water2 systems · 793,393 served
How to read the population total

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.