
Westborough, Massachusetts | Municipal Water Utility Company | Public Service Announcement
The municipal water supply of Westborough Water Department may contain several concerning contaminants including Carbofuran, Fluoranthene and Tetrahydrofuran, and residents may experience higher than normal water hardness levels. Westborough Water Department provides water services to your community with water sourced primarily from Surface water reservoirs.
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Westborough Water Department Area Details

Area served:
Westborough, Massachusetts

Population served:
18878

Water source:
Surface water

Phone:
650-589-1435

Address:
2263 Westborough Boulevard, San Francisco, MA 94080

3date
Contaminants Detected In Westborough, Massachusetts
Arsenic; Bromodichloromethane; Chloroform; Chromium (hexavalent); Dibromochloromethane; Dichloroacetic acid; Manganese; Total trihalomethanes (TTHMs);… more

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Westborough Water Department
Annual Municipal Water Report
List of Municipal Water Contaminants Tested by Westborough Water Department
Tested But Not Detected:
1,1,1,2-Tetrachloroethane; 1,1,1-Trichloroethane; 1,1,2,2-Tetrachloroethane; 1,1,2-Trichloroethane; 1,1-Dichloroethane; 1,1-Dichloroethylene; 1,1-Dichloropropene; 1,2,3-Trichlorobenzene; 1,2,3-Trichloropropane; 1,2,4-Trichlorobenzene; 1,2,4-Trimethylbenzene; 1,2-Dibromo-3-chloropropane (DBCP); 1,2-Dichloroethane; 1,2-Dichloropropane; 1,3,5-Trimethylbenzene; 1,3-Butadiene; 1,3-Dichloropropane; 1,3-Dichloropropene; 2,2-Dichloropropane; 2,4,5-TP (Silvex); 2,4-D; 3-Hydroxycarbofuran; Alachlor (Lasso); Aldicarb; Aldicarb sulfone; Aldicarb sulfoxide; Aldrin; Aluminum; Antimony; Atrazine; Benzene; Benzo[a]pyrene; Beryllium; Bromobenzene; Bromochloromethane; Bromomethane; Butachlor; Cadmium; Carbaryl; Carbofuran; Carbon tetrachloride; Chlordane; Chlorodifluoromethane; Chloroethane; Chloromethane; cis-1,2-Dichloroethylene; Cobalt; Cyanide; Dalapon; Di(2-ethylhexyl) adipate; Di(2-ethylhexyl) phthalate; Dibromomethane; Dicamba; Dichlorodifluoromethane; Dichloromethane (methylene chloride); Dieldrin; Dinoseb; Endrin; Ethylbenzene; Ethylene dibromide; Heptachlor; Heptachlor epoxide; Hexachlorobenzene (HCB); Hexachlorobutadiene; Hexachlorocyclopentadiene; Isopropylbenzene; Lindane; m-Dichlorobenzene; Mercury (inorganic); Methomyl; Methoxychlor; Metolachlor; Metribuzin; Molybdenum; Monobromoacetic acid; Monochlorobenzene (chlorobenzene); n-Butylbenzene; n-Propylbenzene; Naphthalene; Nitrite; o-Chlorotoluene; o-Dichlorobenzene; Oxamyl (Vydate); p-Chlorotoluene; p-Dichlorobenzene; p-Isopropyltoluene; Pentachlorophenol; Perfluorobutane sulfonate (PFBS); Perfluoroheptanoic acid (PFHPA); Perfluorohexane sulfonate (PFHXS); Perfluorononanoic acid (PFNA); Perfluorooctane sulfonate (PFOS); Perfluorooctanoic acid (PFOA); Picloram; Polychlorinated biphenyls (PCBs); Propachlor; sec-Butylbenzene; Silver; Simazine; Styrene; tert-Butylbenzene; Tetrachloroethylene (perchloroethylene); Thallium; Toluene; Toxaphene; trans-1,2-Dichloroethylene; Trichloroethylene; Trichlorofluoromethane; Vinyl chloride; Xylenes (total)

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Westborough Water Department
About Us
The Westborough Water District obtains 100% of its water from the Bay Area Public Utility Commission (SFPUC). Our primary water source comes from snowmelt flowing through the Tuolumne River into the Hetch Hetchy Reservoir. This protected water source is exempt from filtration requirements by both the EPA and State Water Resources Control Board's Division of Water.
To ensure safe drinking standards, Hetch Hetchy water undergoes several treatment processes including:
- Ultraviolet light and chlorine disinfection
- pH adjustment for optimal corrosion control
- Fluoridation for dental health protection
- Chloramination to maintain disinfectant residual
Our water supply is supplemented by surface water from two regional watersheds: the 35,000-acre Alameda Watershed (Calaveras and San Antonio reservoirs) and the 23,000-acre Peninsula Watershed (Crystal Springs, San Andreas, and Pilarcitos reservoirs). These sources are processed at the Sunol Valley and Harry Tracy Water Treatment Plants respectively.
The SFPUC's Water Quality Department conducts over 55,000 water tests annually throughout the system. This rigorous testing ensures your water meets or exceeds all federal and state drinking water requirements. While all water may contain small amounts of contaminants, this doesn't necessarily indicate health risks. Both EPA and state regulations limit contaminant levels to protect public health.
Regarding fluoridation, our target level is 0.7 mg/L, consistent with state guidelines. For those concerned about lead exposure, there are no known lead service lines in our system. However, lead can come from household plumbing components. If concerned, run your tap for 30 seconds to 2 minutes before using water for drinking or cooking, especially after periods of non-use.
Some individuals may be more sensitive to contaminants, including those undergoing chemotherapy, organ transplant recipients, people with HIV/AIDS, elderly individuals, and infants. These individuals should seek advice from their healthcare providers about their drinking water.

For more information on your municipal water, visit the U.S. Environmental Protection Agency:
Westborough Water Department Municipal Water Company and EPAWestborough Water Department Municipal Water Report Info
The Westborough Water District (WWD) was established in 1961, originally as the Callan Park County Water District. It operates under California Water Code section 30000 as a Special District - a form of local government created by the community to fulfill specific needs.
WWD serves approximately 12,000 residents through about 4,000 residential, commercial, and irrigation connections. The service area covers roughly 1 square mile (from west of Highway 280 to Skyline Boulevard, and from King Drive in Daly City to San Bruno). Since inception, WWD has purchased 100% of its water from the San Francisco Water Department.
Key infrastructure includes:
- 24+ miles of water distribution lines
- Average daily consumption of 1 million gallons
- Three steel storage tanks with 6.3 million gallons total capacity
- Emergency connections with North Coast County Water District (Pacifica) and Daly City
The district is governed by a 5-member elected board, with members required to be district residents and registered voters. WWD maintains an emergency stockpile of materials and can perform most urgent repairs with in-house staff, avoiding contractor delays.
In January 2016, WWD received the Transparency Certificate of Excellence from the Special District Leadership Foundation, recognizing its commitment to good governance practices including ethics training, Brown Act compliance, and proper financial reporting.
Municipal Water Utility Company FAQ

For more information on your municipal water, visit the U.S. CDC:
Westborough Water Department Municipal Water Company and CDC.. ...

Westborough Water Department delivers municipal water services to residents of San Francisco and Westborough, Massachusetts.
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