In 1978, [[Michigan]] became the first state to repeal mandatory fluoridation laws, leaving the decision to local jurisdictions. Many municipalities have since mounted successful challenges against mandatory fluoridation laws.
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In 1978, [[Michigan]] became the first state to repeal mandatory fluoridation laws, leaving the decision to local jurisdictions.<ref>http://fluoridealert.org/content/mandatory-fluoridation-in-the-u-s/</ref> Many municipalities have since mounted successful challenges against mandatory fluoridation laws.