Why did the U.S. Department of Health and Human Services recommend a new level for community water fluoridation?

Sources of fluoride have increased since the early 1960s. At that time, drinking water and food and beverages prepared with fluoridated water accounted for nearly all of an individual’s fluoride intake.

Today, water is just one of several sources of fluoride. Other sources include dental products such as toothpaste and mouth rinses, prescription fluoride supplements, and professionally applied fluoride products such as varnish and gels.

Recognizing that it is now possible to receive enough fluoride with slightly lower levels of fluoride in water, HHS recommends changing the level for community water systems to 0.7 ppm.