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Fluoride Facts
Fluoridation Information
  • All drinking water naturally contains some fluoride. Community water fluoridation is the process of adjusting the naturally occurring fluoride level to the optimum level for preventing tooth decay.
  • Adults, as well as children, benefit from drinking fluoridated water throughout their lives.
  • More than half (62%) of the U.S. population lives in communities served by fluoridated water supplies.
  • Community water fluoridation has the endorsement of every major health organization in the United States and many other countries, as well as every Surgeon General for the past 50 years.
  • Every $1 spent on fluoridation saves $120 in dental treatment costs.
  • Fluoridation will not change the taste, odor, or appearance of your water.

Fluoridation Benefits People of All Ages

Drinking fluoridated water, as part of your diet, will provide about 60 percent of the protection necessary to fight against cavities. Fluoride works to strengthen tooth enamel so teeth become more resistant to decay, and it reverses newly formed cavities.

Fluoridation Safety
Extensive research conducted over the past 50 years has shown that fluoridation of public water supplies is a safe and effective way to reduce tooth decay for all community residents.

The overall value and safety of community water fluoridation is endorsed by the Centers for Disease Control and Prevention and by the U.S. Surgeon General. Community water fluoridation is endorsed by numerous public health and professional organizations, including the American Medical Association, the American Association of Public Health, U.S. Public Health Service, World Health Organization and the American Dental Association.

Information Type
Point of Contact
Information on fluoride in your drinking water
San José Municipal Water System at (408) 277-3671
Health-related questions
California Department of Public Health toll-free number (844) 435-8420