Community Water Fluoridation 70th Anniversary

"This year, the United States marks the 70th anniversary of community water fluoridation, one of public health's greatest success stories.

Almost all water contains some naturally-occurring fluoride, but usually at levels too low to prevent tooth decay. Water fluoridation is the process of adding a small amount of fluoride to public water supplies to a level known to make teeth stronger and prevent cavities. In 1945, Grand Rapids, Michigan, was the first city in the U.S. to fluoridate its water, and by the early 1950's, results were clear: Compared to school children from nearby areas that did not fluoridate their water, children in Grand Rapids had fewer cavities..."
Fluoride and water