Contra Costa Water District

Contra Costa County, CA
CA0710003
People Served
198K
Water Source
Surface Water
Counties
Contra Costa County
Data from
2023
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Contaminants Exceeding Limits

No contaminants have exceeded the guideline limits in the last year.

    Other Contaminants Detected

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

    Chloramine

    Avg:1.700 ppm
    Limit:-

    Chlorite

    Avg:0.300 ppm
    Limit:1.000 ppm

    Coliform

    Avg:0.250 positive samples
    Limit:-

    Copper

    Avg:0.138 ppm
    Limit:1.300 ppm

    Fluoride

    Avg:0.717 ppm
    Limit:4.000 ppm

    Haloacetic Acids

    Avg:11.717 ppb
    Limit:60.000 ppb
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    Contaminants tested