How much fluoride is in the water supply?
The amount of fluoride in the public water supply varies between municipalities. Though, the Environmental Protection Agency has determined that the “optimal” range for fluoride in water should be between 0.7 and 1.2 ppm (parts per million). The upper limit allowed by the EPA in public water supplies is 4 ppm. Backed by results from more than 140 documented studies undertaken in 20 different countries over the past several decades, fluoridated water adhering to these standards has been scientifically established as safe for drinking. Fluoridation of community water supplies is the single most effective public health measure to prevent tooth decay and to improve oral health for a lifetime. NOTE: even in the correct amounts, fluoride or the disinfectant chlorine in drinking water, makes the water unsuitable for use in kidney dialysis machines or aquariums.
