Los Angeles, CA water quality
Los Angeles, CA is served by 14 public water systems, serving 3,994,499 people combined. Across those systems, we count 1 health-based violation in the last 5 years. The worst Tap Grade among them is B.
Water systems serving Los Angeles
LOS ANGELES-CITY, DEPT. OF WATER & POWER
LOS ANGELES, CA · 3,875,566 served
SANTA MONICA-CITY, WATER DIVISION
LOS ANGELES, CA · 89,947 served
VERNON-CITY, WATER DEPT.
VERNON, CA · 28,112 served
CANYON CREEK OUTDOOR EDUCATION CENTER
LOS ANGELES, CA · 177 served
LOS ANGELES WORLD AIRPORTS
LOS ANGELES, CA · 169 served
AGUA DULCE WINERY
LOS ANGELES, CA · 113 served
CLEAR CREEK OUTDOOR EDUCATION CENTER
LOS ANGELES, CA · 105 served
THE OAKS
LOS ANGELES, CA · 67 served
LOS ANGELES, CITY OF - CASTAIC PWR PLANT
LOS ANGELES, CA · 65 served
WAGON WHEEL PLAZA
LOS ANGELES, CA · 55 served
LOS ANGELES, CITY OF - POWER PLANT #2
LOS ANGELES, CA · 44 served
LOS ANGELES, CITY OF - POWER PLANT #1
LOS ANGELES, CA · 29 served
CAMP SCOTT AND SCUDDER
LOS ANGELES, CA · 25 served
CAMPS MUNZ AND MENDENHALL
LOS ANGELES, CA · 25 served
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Is Los Angeles, CA tap water safe to drink?
14 public water systems serve Los Angeles, CA, with 1 health-based violation in the last 5 years across them. The worst Tap Grade among them is B. A Tap Grade summarizes public EPA compliance records; it is not a determination that water is safe or unsafe to drink.
Does Los Angeles's water have lead in it?
The most recent 90th-percentile lead sample is 3.9 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Los Angeles's water?
Yes — at least one water system serving Los Angeles has detected PFAS under UCMR5.
Other cities in California
See all of California →Source: EPA SDWIS/ECHO · Data as of 2026Q2
TapGraded presents public EPA data for information only — it is not health advice and not a determination that any water is safe or unsafe to drink. For health concerns, contact your water utility or local health department.