This summer, Florida became only the second state in the nation to outlaw community water fluoridation. Signed by Governor Ron DeSantis on May 15, SB 700 took effect on July 1, 2025, forbidding cities and utilities from adding fluoride, or any other chemical not strictly required for safety, to public drinking water.
Why the change?
Supporters framed the measure as a “medical-freedom” victory, arguing that mass fluoridation amounts to involuntary medication and citing disputed studies linking fluoride to neuro-developmental risks. State Surgeon-General Joseph Ladapo and several libertarian-leaning legislators championed the bill; lobbying help also came from anti-additive groups that have long targeted fluoride.
Dental experts raise alarms
Dentists and public-health organizations, including the American Dental Association, call the ban “a step backward” for low-income children, seniors and residents of rural counties who rely on tap water for cavity prevention. The ADA notes that every dollar spent on fluoridation typically saves $32 in dental costs.
What utilities must do now
Roughly 29 Florida counties, including every public water system in Broward County, routinely fluoridated their drinking water. All have begun flushing systems or turning off feed pumps. Most water plants say the physical work is inexpensive, but they will need new corrosion-control plans because fluoride was part of their chemistry balance.
How the ban affects households
● No change in taste or safety:
The law doesn’t alter chlorine disinfection
or federal lead-and-copper rules.
● Dental hygiene matters more: Dentists
recommend switching to fluoridated
toothpaste and asking paediatricians
about supplements for children under ten.
● Possible cost ripple: Utilities warn
that reformulating treatment could
add a few cents per thousand gallons,
though bills may also fall slightly where
fluoride purchases end.
What’s next?
Several advocacy groups are weighing a legal challenge, arguing the state has overridden local voter referendums that approved fluoridation. Meanwhile, legislators have tasked the Department of Health with tracking cavity rates over the next five years to gauge the law’s impact. Whether the ban proves a triumph of personal liberty or a costly public-health experiment will hinge on those numbers—and on how faithfully Floridians stick to toothbrushes and dental check-ups now that fluoride has left the tap.
