Los Angeles-City, Dept. Of Water & Power

Los Angeles, CA
CA1910067
People Served
3.9M
Water Source
Surface Water
Counties
Los Angeles County
Data from
2023
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Contaminants Exceeding Limits

The following contaminants have exceeded the guideline limits at least once in the last year.

  • CH

    Chlorate

    Chlorate forms when chlorine-based disinfectants react with water. It's a byproduct of water treatment that can interfere with thyroid function, especially in infants and pregnant women.

    386.000 ppb
    EPA limit 210.000 ppb

Other Contaminants Detected

The following contaminants have been detected, but not exceeded the guideline limits in the last year.

Aluminum

Avg:70.000 ppb
Limit:-

Arsenic

Avg:2.283 ppb
Limit:10.000 ppb

Boron

Avg:288.333 ppb
Limit:-

Bromate

Avg:2.743 ppb
Limit:10.000 ppb

Bromide

Avg:0.020 ppb
Limit:-

Calcium

Avg:31.167 ppm
Limit:-
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