The U.S. Food and Drug Administration (FDA) has issued its final rule for added fluoride levels in bottled water, which amends the maximum allowable level.

The U.S. Food and Drug Administration (FDA) announced today that it is proposing to revise the quality standard for bottled water to specify that bottled water to which fluoride is added by the manufacturer may not contain fluoride that exceeds 0.7 milligrams per liter (mg/L).