Water Quality in Los Angeles, CA (90403)

EPA violation data for public water systems serving ZIP code 90403.

Past Health-Based Violations

1 health-based violation was found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 9 monitoring/reporting violations.

More violations than 67% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

23,867

Population

5

Water Systems

10

Violations (5yr)

1

Health-Based

Location

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Water Systems Serving This Area (5)

Griffith Park

Purchased surface water 9,000,000 people served
0 violations

Los Angeles-City, Dept. Of Water & Power

Surface water 3,875,566 people served
0 violations

Long Beach Utilities Department

Purchased surface water 466,772 people served
0 violations

Mims Distributing Co

Groundwater 25 people served
0 violations

Mill House Inn Motel

1 health-based
Groundwater 25 people served
10 violations (5yr) · 1 health-based · All resolved

Contaminants Found

Groundwater RuleHealth-Based
1 violation
All resolved
NitrateMonitoring

At high levels, nitrate can cause blue baby syndrome in infants.

4 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

1 violation
All resolved

How Does This Compare?

Los Angeles (90403) has more violations than 67% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 10.

Fewer violations 67th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Whole House Carbon Filter

A solid baseline for improving overall water quality. Reduces chlorine, sediment, and many common contaminants throughout your entire home.

Targets:Chlorine, Sediment, Taste & Odor

Look for:NSF/ANSI 42 certified

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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