North Garden, California | Municipal Water Utility Company | Public Service Announcement
The public water supply in California Water Service (CWS) - North Garden may contain various concerning pollutants including 1,2-Dibromo-3-chloropropane (DBCP), Simazine, Bromacil and DCPA di-acid degradate, while also experiencing elevated mineral hardness levels. California Water Service (CWS) - North Garden provides your community with water sourced primarily from Surface water reservoirs.
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California Water Service (CWS) - North Garden Area Details
Area served:
North Garden, California
Population served:
24412
Water source:
Surface water
Phone:
650-917-0152
Address:
949 B Street, Los Altos, CA 94024
3date
Contaminants Detected In North Garden, California
1,2,3-Trichloropropane; Arsenic; Bromodichloromethane; Chloroform; Chromium (hexavalent); Dibromochloromethane; Dichloroacetic acid; Tetrachloroethyle… more
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California Water Service (CWS) - North Garden
Annual Municipal Water Report
List of Municipal Water Contaminants Tested by California Water Service (CWS) - North Garden
Tested But Not Detected:
1,1,1,2-Tetrachloroethane; 1,1,1-Trichloroethane; 1,1,2,2-Tetrachloroethane; 1,1,2-Trichloroethane; 1,1-Dichloroethylene; 1,1-Dichloropropene; 1,2,3-Trichlorobenzene; 1,2,4-Trichlorobenzene; 1,2,4-Trimethylbenzene; 1,2-Dichloroethane; 1,2-Dichloropropane; 1,3,5-Trimethylbenzene; 1,3-Butadiene; 1,3-Dichloropropane; 1,3-Dichloropropene; 2,2-Dichloropropane; Acetone; Alachlor (Lasso); Aluminum; Antimony; Atrazine; Benzene; Beryllium; Bromacil; Bromobenzene; Bromochloromethane; Bromomethane; Butachlor; Cadmium; Carbon tetrachloride; Chlorodifluoromethane; Chloroethane; Chloromethane; cis-1,2-Dichloroethylene; cis-1,3-Dichloropropene; Cobalt; Cyanide; Dibromomethane; Dichloromethane (methylene chloride); Dimethoate; Ethyl tert-butyl ether; Ethylbenzene; Ethylene dibromide; Glyphosate; Hexachlorobutadiene; Isopropyl ether; Isopropylbenzene; m- & p-Xylene; m-Dichlorobenzene; Mercury (inorganic); Methyl ethyl ketone; Methyl isobutyl ketone; Metolachlor; Metribuzin; Molinate; Monochloroacetic acid; Monochlorobenzene (chlorobenzene); MTBE; n-Butylbenzene; n-Propylbenzene; Naphthalene; Nitrate & nitrite; Nitrite; o-Chlorotoluene; o-Dichlorobenzene; o-Xylene; p-Chlorotoluene; p-Dichlorobenzene; p-Isopropyltoluene; Perchlorate; Perfluorobutane sulfonate (PFBS); Perfluoroheptanoic acid (PFHPA); Perfluorohexane sulfonate (PFHXS); Perfluorononanoic acid (PFNA); Perfluorooctane sulfonate (PFOS); Perfluorooctanoic acid (PFOA); Propachlor; Radium; combined (-226 & -228); Radium-226; Radium-228; sec-Butylbenzene; Selenium; Silver; Simazine; Styrene; tert-Amyl methyl ether; tert-Butylbenzene; Thallium; Thiobencarb; Toluene; trans-1,2-Dichloroethylene; trans-1,3-Dichloropropene; Trichloroethylene; Trichlorofluoromethane; Trichlorotrifluoroethane; Vinyl chloride; Xylenes (total)
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California Water Service (CWS) - North Garden
About Us
Cal Water maintains a comprehensive cross-connection control program to ensure the quality of water delivered through our distribution system remains pristine. This crucial program prevents activities on customer properties from affecting our public water supply.
Our cross-connection control specialists:
- Ensure annual testing of all existing backflow prevention assemblies
- Assess all non-residential connections
- Enforce and manage installation of new commercial and residential assemblies
Last year, our team oversaw installation of 2,826 new assemblies and testing of 36,433 backflow prevention assemblies company-wide.
Residents are our first line of defense against system contamination through backflow. Even small home projects can create potentially hazardous situations, so following plumbing codes is essential for maintaining community water safety. We recommend consulting qualified plumbing professionals for any water-related projects.
Common cross-connection concerns include:
- Garden hoses without simple vacuum breakers (available at home improvement stores)
- Improperly installed toilet tank fill valves lacking required air gaps
- Landscape irrigation systems without proper backflow prevention assemblies

For more information on your municipal water, visit the U.S. Environmental Protection Agency:
California Water Service (CWS) - North Garden Drinking Water Company and EPACalifornia Water Service (CWS) - North Garden Municipal Water Report Info
The EPA provides comprehensive guidelines for municipal water systems across California, including North Garden. Their resources include information about contaminant monitoring, treatment requirements, and community right-to-know provisions.
Regular testing ensures your water meets or exceeds all federal and state standards. The EPA's Safe Drinking Water Hotline (1-800-426-4791) offers additional information about water safety and local testing.
Municipal Water Utility Company FAQ

For more information on your municipal water, visit the U.S. CDC:
California Water Service (CWS) - North Garden Drinking Water Company and CDCThe CDC provides valuable information about water safety and health concerns related to municipal water supplies. Their resources include guidance on understanding water quality reports, potential contaminants, and steps to take if you have concerns about your water supply.
For households with members who may have compromised immune systems, the CDC offers specific recommendations about additional precautions that may be necessary.

California Water Service (CWS) - North Garden delivers municipal water services to residents of Los Altos and North Garden, California.
Get the California Water Service (CWS) - North Garden Official Water Score Report for Free (limited time offer).

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