Is fluoridation safe?
Yes. Extensive research conducted over the past 50 years has demonstrated that fluoridation of public water supplies is a safe and effective way to reduce the incidence of tooth decay in a community. A detailed review by the National Research Council in 1993 found no links between low-level fluoride ingestion and occurrences of cancer, kidney disease, gastrointestinal disorders, immunological disorders, reproductive effects, genetic disorders, or bone fractures.

Exposure to high levels of fluoride over a long time can cause dental fluorosis, a condition that leads to mottled tooth enamel, discoloration, and in some cases erosion of the gum line. Drinking water's fluoride content is limited under federal law and the levels are very low. The maximum level of fluoride deemed acceptable by the U.S. Environmental Protection Agency is 4 milligrams per liter (mg/L). In California, the Department of Health Services has set a maximum contaminant level (MCL) of 2.0 mg/L. The American Dental Association (ADA), the American Medical Association, the Centers for Disease Control and Prevention (CDC), the U.S. Public Health Service (USPHS), the World Health Organization (WHO), and many other public health and professional organizations recognize the public health benefits of drinking water fluoridation. These policies are based on the overwhelming weight of credible scientific evidence.

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1. Does the Contra Costa Water District fluoridate its drinking water?
2. Do the cities and agencies that purchase untreated water from CCWD also fluoridate the water when they treat it?
3. What is water fluoridation? How does it prevent tooth decay?
4. Is fluoridation safe?
5. What about recent reports linking fluoridation to bone cancer?
6. How popular is fluoridated water?
7. Is water fluoridation the best and most cost-effective method for disease prevention?