Florida Implements Ban on Fluoride in Public Water Supplies

In a significant move, Florida has become the second state in the United States to prohibit the addition of fluoride to public water systems. The legislation was enacted when Governor Ron DeSantis signed the Florida Farm Bill, explicitly barring the incorporation of any substances into the water supply unless they serve the purpose of sanitation. DeSantis emphasized that while fluoride can be beneficial for dental health when used appropriately, mandatory fluoridation in the water supply constitutes involuntary medication.

Historically, fluoride was introduced into US water systems in 1945, leading to a notable decline in childhood cavities and adult tooth loss. The Centers for Disease Control and Prevention (CDC) regards water fluoridation as one of the most impactful public health achievements of the 20th century. Nonetheless, opposition persists, mainly centered around potential neurotoxic effects of fluoride.

Recent studies and government bodies have raised concerns over fluoride's safety at elevated levels. The Department of Health and Human Services, under the previous administration, noted with moderate confidence that higher fluoride exposure might be associated with reduced IQ scores in children. Both Florida’s State Surgeon General Joseph Ladapo and Health Secretary Robert F. Kennedy Jr. have publicly opposed fluoridation, citing possible implications for cognitive development.

Globally, policies on water fluoridation vary, with nations like Germany and France opting out of the practice. The World Health Organization (WHO) advocates for maintaining optimal fluoride levels—capped at 1.5 milligrams per liter to prevent overexposure—while recognizing the benefits in reducing tooth decay. The US guidelines recommend a lower level of 0.7 mg/L.

The recent legislative shift in Florida follows Utah, which became the first state to outlaw water fluoridation earlier this year. The ongoing debate continues to highlight the tension between public health benefits and potential risks associated with fluoride in drinking water.