<P> As with some other countries , water fluoridation in the United States is a contentious issue . As of May 2000 , 42 of the 50 largest U.S. cities had water fluoridation . On January 25 , 1945 , Grand Rapids , Michigan , became the first community in the United States to fluoridate its drinking water to prevent tooth decay . </P>
<P> As with some other countries , water fluoridation in the United States is a contentious issue . As of May 2000 , 42 of the 50 largest U.S. cities had water fluoridation . On January 25 , 1945 , Grand Rapids , Michigan , became the first community in the United States to fluoridate its drinking water to prevent tooth decay . </P>
when was fluoride added to water in the us
when was fluoride added to water in the us
January 25 , 1945
January 25 , 1945