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Water Quality

COVID-19 Information

The City of Carlsbad, Carlsbad Municipal Water District (CMWD) purchases water from the San Diego County Water Authority, and both agencies are responsible for making sure that our tap water meets the state’s strict heath standards. Public drinking water is always treated and tested to assure that pathogens (including viruses) are removed before it is distributed to the public. 

In addition, there is no evidence that coronavirus is transmitted through water. In fact, coronavirus is a respiratory illness like the flu, and neither are spread through treated water supplies.  The World Health Organization (WHO) has stated that the, “presence of the COVID-19 virus has not been detected in drinking-water supplies.” Additionally, EPA recommends that citizens continue to use and drink tap water as usual.

At this time, there are no indications that COVID-19 is in the drinking water supply or will affect the reliable supply of water.

We encourage you to visit the San Diego County Water Authority website for additional information.

More information about virus prevention and treatment

Water Quality

We currently import all of our drinking water supply. Imported water originates hundreds of miles away from the Colorado River through the Colorado River Aqueduct, and from Northern California through the California Aqueduct (also known as the State Water Project). Water from these sources is imported and treated by the Metropolitan Water District of Southern California at its Lake Skinner Treatment Plant in Riverside County and the San Diego County Water Authority at its Twin Oaks Valley Water Treatment Plant in San Marcos.

After rigorous treatment and meeting all regulatory requirements, the water travels through San Diego County Water Authority owned pipelines and is purchased and distributed by the Carlsbad Municipal Water District to its customers. Each year, the water district delivers drinking water to nearly 86,000 people through 447 miles of pipelines.