The U.S. Department of Health and Human Services (HHS) has determined 0.7 milligrams of fluoride per liter of water is the optimal fluoride level in drinking water to prevent tooth decay.
This recommendation, released April 27, updates and replaces the previous recommended range (0.7 to 1.2 milligrams per liter) issued in 1962.
CDA applauds this decision by HHS.