Britannica Sources used in this answer

What is the recommended fluoride concentration in drinking water for dental health?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

A labeled diagram of the periodic table entry for fluorine, showing its atomic number 9, symbol F, atomic weight 18.998, electron configuration, and indicating it is a halogen and a gas at room temperature. — fluorine Properties of fluorine.

The recommended concentration of fluoride in drinking water for optimal dental health is 0.7 mg/L (equivalent to 0.7 parts per million, or ppm).12

While some historical contexts or general references may cite a range or a standard of one part per million, current public health guidelines, such as those from the U.S. Public Health Service, specifically identify 0.7 mg/L as the optimal level to effectively reduce dental caries while minimizing the risk of dental fluorosis.312

It is important to note that regulatory bodies establish different thresholds for safety and monitoring:
* Maximum Desirable Limit: The World Health Organization has set 1.5 mg/L as the maximum desirable limit.1
* Enforceable Limit: The Environmental Protection Agency (EPA) has established 4.0 mg/L as the maximum enforceable limit for fluoride in drinking water to prevent adverse health effects like skeletal fluorosis.12

Community water fluoridation is a widely recognized public health measure, though it remains a subject of ongoing discussion regarding individual choice and potential overexposure.12