California Water Service - San Mateo

San Mateo County, CA
CA4110008
People Served
102.7K
Water Source
Surface Water
Counties
San Mateo County
Data from
2023
More in California →

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.

    Alkalinity, Total

    Avg:46.000 ppm
    Limit:-

    Boron

    Avg:0.040 ppm
    Limit:-

    Calcium

    Avg:13.000 ppm
    Limit:-

    Chlorate

    Avg:141.000 ppb
    Limit:210.000 ppb

    Chloride

    Avg:8.700 ppm
    Limit:-

    Chromium, Hex

    Avg:0.230 ppb
    Limit:10.000 ppb
    Show More

    Contaminants tested