
Southwest, California | Municipal Water Utility Company | Public Service Announcement
The tap water supplied by Golden State Water Company (GSWC) - Southwest may contain several concerning impurities including Benzo[b]fluoranthene, 1,1,2-Trichloroethane and Nitrite, and residents may experience unusually elevated water hardness levels. Golden State Water Company (GSWC) - Southwest provides the community with municipal water sourced primarily from purchased surface water supplies.
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Golden State Water Company (GSWC) - Southwest Area Details

Area served:
Southwest, California

Population served:
271917

Water source:
Purchased surface water

Phone:
800-999-4033

Address:
630 E. Foothill Blvd, San Dimas, CA 91773

3date
Contaminants Detected In Southwest, California
Bromodichloromethane; Chloroform; Chromium (hexavalent); Dibromochloromethane; Dichloroacetic acid; Total trihalomethanes (TTHMs); Trichloroacetic aci… more

Limited Time: Free Water Safety Report for Golden State Water Company (GSWC) - Southwest.
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Golden State Water Company (GSWC) - Southwest
Annual Municipal Water Report
List of Municipal Water Contaminants Tested by Golden State Water Company (GSWC) - Southwest
Tested But Not Detected:
1,1,1-Trichloroethane; 1,1,2,2-Tetrachloroethane; 1,1,2-Trichloroethane; 1,1-Dichloroethane; 1,1-Dichloroethylene; 1,2,3-Trichloropropane; 1,2,4-Trichlorobenzene; 1,2-Dichloroethane; 1,2-Dichloropropane; 1,3-Butadiene; 1,3-Dichloropropene; 1,4-Dioxane; 17-beta-Estradiol; 2,4,5-TP (Silvex); 2,4-D; 3-Hydroxycarbofuran; 4-Androstene-3,17-dione; Alachlor (Lasso); Aldicarb; Aldicarb sulfone; Aldicarb sulfoxide; Aldrin; Aluminum; Antimony; Atrazine; Baygon (Propoxur); Bentazon (Basagran); Benzene; Beryllium; Bromochloromethane; Cadmium; Carbaryl; Carbofuran; Carbon tetrachloride; Chlordane; Chlorodifluoromethane; cis-1,2-Dichloroethylene; cis-1,3-Dichloropropene; Cobalt; Cyanide; Dalapon; DCPA mono- and di-acid degradates; Di(2-ethylhexyl) phthalate; Dicamba; Dichlorodifluoromethane; Dichloromethane (methylene chloride); Dieldrin; Dinoseb; Diquat; Endothall; Endrin; Equilin; Estriol; Estrone; Ethinyl estradiol; Ethylbenzene; Glyphosate; Heptachlor; Heptachlor epoxide; Hydrogen sulfide; Lindane; m- & p-Xylene; Mercury (inorganic); Methiocarb; Methomyl; Methoxychlor; Monochlorobenzene (chlorobenzene); MTBE; Nitrate; Nitrate & nitrite; Nitrite; o-Dichlorobenzene; o-Xylene; Oxamyl (Vydate); p-Dichlorobenzene; Pentachlorophenol; Perchlorate; Perfluorobutane sulfonate (PFBS); Perfluoroheptanoic acid (PFHPA); Perfluorohexane sulfonate (PFHXS); Perfluorononanoic acid (PFNA); Perfluorooctane sulfonate (PFOS); Perfluorooctanoic acid (PFOA); Picloram; Polychlorinated biphenyls (PCBs); Selenium; Silver; Simazine; Styrene; Testosterone; Tetrachloroethylene (perchloroethylene); Thallium; Thiobencarb; Toluene; Toxaphene; trans-1,2-Dichloroethylene; trans-1,3-Dichloropropene; Trichloroethylene; Trichlorofluoromethane; Trichlorotrifluoroethane; Vinyl chloride; Xylenes (total)

What's in your tap water?

Discover which contaminants exceed Legal and Health Guidelines in your water supply.
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Golden State Water Company (GSWC) - Southwest
About Us
Golden State Water commends California customers for their exceptional water conservation efforts and encourages the community to continue using water resources wisely to support the state's drought recovery journey.
Following an extraordinarily dry winter, all residents must adopt water-efficient practices as part of California's Way of Life. On May 9, 2016, Governor Jerry Brown issued an Executive Order permanently prohibiting wasteful water practices, including:
- Hosing off sidewalks, driveways and hardscaped areas
- Washing vehicles without shut-off nozzle equipped hoses
- Operating decorative fountains without water recirculation systems
- Watering landscapes that cause excessive runoff
- Irrigating within 48 hours after measurable rainfall
- Watering ornamental turf in public street medians with potable water
Golden State Water appreciates customers' ongoing conservation commitment. For additional drought information and water conservation requirements in your area, please visit http://www.gswater.com/drought/ or call 1.800.999.4033.

For more information on your municipal water, visit the U.S. Environmental Protection Agency:
Golden State Water Company (GSWC) - Southwest Municipal Water Company and EPAGolden State Water Company (GSWC) - Southwest Municipal Water Report Info
Golden State Water currently serves approximately 8,800 customers in the Barstow region. We are proud to have been the community's trusted water service provider since 1929.
The water delivered to customers in the Barstow System is groundwater pumped from the Mojave River Basin-Centro Sub-Basin, which forms the central portion of the Mojave Basin extending northwesterly and southeasterly from the Mojave River.
To view Golden State Water's 2019 event schedule, please click here.
Municipal Water Utility Company FAQ

For more information on your municipal water, visit the U.S. CDC:
Golden State Water Company (GSWC) - Southwest Municipal Water Company and CDC- How should I investigate unexplained high water usage? You may have a hidden leaky toilet or faucet that's difficult to detect. Contact our office and we'll assist you in resolving the issue.
- What should I do if experiencing low water pressure? Inspect your meter and surrounding area for potential leaks, then contact our office to report the pressure issue at your location.
- Why does my water appear discolored? Recent repairs may have allowed air into the line, causing a milky appearance in your water.
- What chemicals are added to our municipal water? Only chemicals approved by the National Safety Foundation for treating drinking water are utilized in our system.
- My water tastes and smells unusual. Is it safe? All public water systems must maintain a minimum chlorine level of 0.2 mg/L (measured at the end of each line) per state regulations. Systems using chloramine must maintain 0.5 mg/L levels. Our disinfectant levels are tested daily to ensure safety.
- Why do particles appear when running hot water? Your water heater likely needs flushing. CAUTION: Most manufacturers recommend hiring a professional for this task. If attempting yourself, carefully read the owner's manual to prevent injury or damage.
- Why do I have an outstanding balance after sending payment? We may have received it after the due date or possibly not received it at all. Contact our office for assistance resolving the issue.

Golden State Water Company (GSWC) - Southwest provides municipal water services to the public of San Dimas and Southwest, California.
Get the official Golden State Water Company (GSWC) - Southwest Water Score Report for Free (limited time offer).

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