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- Metropolitan's water supplies again met all of the state and federal requirements for safe drinking water in 2006.
Metropolitan's water quality lab is one of the most advanced and sophisticated in the nation.
Metropolitan monitors for more than 120 required constituents and draws more than 50,000 samples a year to perform more than 320,000 analytical tests to safeguard quality.
An $856 million retrofit program is under way to convert all of Metropolitan's five water treatment plants to ozone disinfection, which is considered to be more effective than chlorine and improves the taste and odor of water.
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| Click here for a message from Timothy F. Brick, Chairman, Metropolitan Board of Directors. |
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| As water travels over the surface of land or through the ground, it can pick up matter left behind by animals or people, and it dissolves minerals and, sometimes, radioactive material. Learn
more
Click here for a health advisory for people with weakened immune systems. |
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| Source water protection is an important issue for all of California. Large water utilities are required by the California Department of Health Services to complete a Watershed Sanitary Survey every five years to examine possible sources of drinking water .. Learn
more |
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"Community water fluoridation continues to be the most cost-effective, practical and safe means for reducing and controlling the occurrence of tooth decay in a community."
U.S. Surgeon General
In fall 2007, the Metropolitan Water District of Southern California is scheduled to join a majority of the nation's public water suppliers in adding fluoride to drinking water in order to prevent tooth decay.
In line with recommendations from the California Department of Health Services, as well as the U.S. Centers for Disease Control and Prevention, Metropolitan will adjust the natural fluoride level in the water, which ranges from 0.1 to 0.4 parts per million, to the optimal range for dental health of 0.7 to 0.8 parts per million.
Fluoride levels in drinking water are limited under California state regulations at a maximum dosage of 2 parts per million.
Fluoride has been added to U.S. drinking water supplies since 1945. Of the 50 largest cities in the U.S., 43 fluoridate their drinking water. |
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