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EPA WATER QUALITY DATA · CA

Is Los Angeles County Tap Water Safe in 2026?

Population-weighted grade and city-level UCMR5 risk bands for 3 WaterCheckup cities in Los Angeles County. "At Risk" means at least one analyte above an EPA limit or a regulated PFAS violation for that system. "Safe" means no such flag and a low-concern city profile.

COUNTY GRADE
F
Score 28.3
3
Total cities
2
At Risk
0
Safe
4.7M
Population served
TOP CONTAMINANTS IN LOS ANGELES COUNTY (UCMR5)

Most common analytes with detections (>0) across cities in this county — each city counted once per compound.

1.PFBA2 cities
2.PFBS2 cities
3.PFHpA2 cities
4.PFHxA2 cities
5.PFHxS2 cities
6.PFNA2 cities
7.PFOA2 cities
8.PFOS2 cities
CITIES IN LOS ANGELES COUNTY
CITYGRADECONTAMINANTS ABOVE LIMITPOPULATION
Los AngelesFMONITOR—4M
Long BeachFAT RISK4460K
GlendaleFAT RISK4200K
FILTER RECOMMENDATIONS

Typical picks for households in Los Angeles County when UCMR5 shows PFAS or related analytes — same product lines we feature on city pages.

TOP PICKS FOR LOS ANGELES COUNTY
⚠ PFBA and related contaminants in county UCMR data
#1
Waterdrop G3P800 RO
EDITORS PICK
Waterdrop  ·  ~$849
Tankless 800 GPD, removes 99%+ PFAS & lead, 10-stage filtration. Smart faucet TDS display.
WHY THIS FOR LOS ANGELES COUNTY · Chosen for Los Angeles County because 2 of 3 tracked cities show at least one UCMR analyte above an EPA limit or a regulated violation — reverse osmosis removes 99%+ of PFAS and many co-occurring pollutants at the tap.
#2
Aquasana SmartFlow RO
MOST CERTIFIED
Aquasana  ·  ~$449
WQA Gold Seal + NSF 42/53/58/401. Most certifications of any under-sink RO. Removes 90+ contaminants.
#3
AquaTru Under-Sink RO
EASIEST FILTER CHANGE
AquaTru  ·  ~$375
NSF 42/53/58 certified. Quick-change filters, no tools. Compact tankless design, 4-stage filtration.
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