
San Carlos, California | Municipal Water Utility Company | Public Service Announcement
The municipal water supply in California Water Service - San Carlos may be compromised by various contaminants including m-Xylene, Chromium (total), tert-Butyl alcohol and Nitrate and nitrite, and residents often experience elevated levels of water hardness. California Water Service - San Carlos provides your community with tap water sourced from purchased surface water supplies.
What's in your tap water?
Limited Time - Request your California Water Service - San Carlos Water Score Report at no cost.
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California Water Service - San Carlos Area Details

Area served:
San Carlos, California

Population served:
30100

Water source:
Purchased surface water

Phone:
650-558-7800

Address:
341 North Delaware Street, San Mateo, CA 94401

3date
Contaminants Detected In San Carlos, California
Bromodichloromethane; Chloroform; Chromium (hexavalent); Dichloroacetic acid; Total trihalomethanes (TTHMs); Trichloroacetic acid; Bromodichloromethan… more

Limited Time - Get the California Water Service - San Carlos Water Score Report for Free.
DISCOVER THE TRUTH & SAFEGUARD YOUR FAMILY!
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California Water Service - San Carlos
Annual Municipal Water Report
List of Municipal Water Contaminants Tested by California Water Service - San Carlos
Tested But Not Detected:
1,1-Dichloroethane; 1,2,3-Trichloropropane; 1,3-Butadiene; 1,4-Dioxane; Bromochloromethane; Bromomethane; Chlorodifluoromethane; Chloromethane; Chromium (total); Cobalt; Dibromoacetic acid; Molybdenum; Monobromoacetic acid; Monochloroacetic acid; Perfluorobutane sulfonate (PFBS); Perfluoroheptanoic acid (PFHPA); Perfluorohexane sulfonate (PFHXS); Perfluorononanoic acid (PFNA); Perfluorooctane sulfonate (PFOS); Perfluorooctanoic acid (PFOA)

What's in your tap water?

Discover which contaminants exceed Legal and Health Guidelines in your water.
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California Water Service - San Carlos
About Us
California Water has delivered high-quality water services to the San Carlos community since 1931. Our water is sourced from the San Francisco Public Utilities Commission (SFPUC). The San Carlos system includes 17 storage reservoirs and 24 booster pumps to ensure reliable distribution.
Cal Water actively maintains and upgrades our facilities to guarantee reliable, quality service. If you have questions or concerns, please contact our local Customer Center by phone or through our website at www.calwater.com.
WATER CONSERVATION REMAINS VITAL: While we await long-term regulations from California, maintaining conservation habits is essential. Using water efficiently ensures adequate supply during drought years and for future generations. Cal Water offers robust conservation programs including rebates and resources to help customers save water. Visit www.calwater.com/conservation for details.

For additional information regarding your municipal water, visit the U.S. Environmental Protection Agency:
California Water Service - San Carlos Municipal Water Company and EPACalifornia Water Service - San Carlos Municipal Water Report Information
The EPA monitors public water systems to ensure compliance with federal health standards. Regular testing identifies contaminants that may pose health risks, allowing for appropriate treatment measures.
California Water Service - San Carlos submits detailed reports documenting water quality parameters, treatment processes, and compliance status with both state and federal regulations.
Municipal Water Utility Company FAQ

For more information on your municipal water, visit the U.S. CDC:
California Water Service - San Carlos Municipal Water Company and CDCThe CDC provides valuable resources about tap water safety, including:
- Understanding common water contaminants and their health effects
- Guidance for vulnerable populations such as children and immunocompromised individuals
- Recommendations for water testing and treatment options
- Information about waterborne disease prevention

California Water Service - San Carlos delivers municipal water services to residents of San Mateo and San Carlos, California.
Free Official Water Safety Report for California Water Service - San Carlos!

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