Council hears competing expert testimony on fluoridation; no policy vote taken

City of Clearwater councilmembers on March 31 heard competing scientific testimony and public comment on whether the city should continue adding fluoride to its public water supply.

The work session featured Florida Surgeon General Joseph Ladapo, who described recent studies and urged council to consider the possibility that the city's longstanding policy may merit reconsideration; University of Florida epidemiologist Ashley Mallon summarized recent epidemiologic reviews linking early‑life fluoride exposure to neurodevelopment outcomes; and dentist Dan Muller spoke in favor of continuing fluoridation. Councilmember Cotton organized the item and asked the panel to present evidence and answer questions. Councilmembers expressed differing views and asked staff to return with additional information; no formal vote or ordinance was taken.

Why it matters: the debate concerns a public‑health intervention the city has used for decades to prevent tooth decay. Proponents told council topical (toothpaste, dental visits) alternatives and scientific groups supporting fluoridation; opponents and some recent scientific reviews cited studies they say link prenatal or early childhood fluoride exposure to neurodevelopmental effects. Any local decision would affect residents who drink municipal water and could be influenced by state action under consideration this legislative session.

Panel presentations and key points

- Joseph Ladapo, M.D., Florida Surgeon General: Ladapo summarized recent literature and urged council members to "consider the possibility" that previously held assumptions about safety may not be complete. He referenced a recent editorial and court findings raising questions about the margin of safety for a 0.7 mg/L fluoridation standard and invited elected officials to weigh uncertainty about population‑level exposures and vulnerable groups such as pregnant women and young children. He said: "You either have to believe that all of the scientific studies showing harms are wrong, or you have to be comfortable doing something for everyone that could be hurting some people in your community." (transcript excerpt)

- Ashley Mallon, Ph.D., M.P.H., University of Florida: Mallon reviewed published epidemiologic studies and systematic reviews, including the U.S. National Toxicology Program (NTP) monograph and a 2023 JAMA Network Open study led by local researchers. She summarized that many peer‑reviewed studies have reported associations between higher prenatal or early‑life fluoride biomarkers and lower measures of child neurodevelopment or behavior, and said the NTP concluded there is "moderate confidence" of an association at higher exposure levels and recommended more U.S. studies. Mallon noted that fluoride added to public systems (fluorosilicic acid, sodium fluorosilicate, sodium fluoride) can include impurities and that fluoride accumulates in calcium‑rich tissues.

- Dan Muller (dentist): Muller argued for continuing fluoridation, citing long public‑health experience with fluoride, international and professional organization positions supporting community water fluoridation, historical reductions in tooth decay where community fluoridation occurred, and cost‑benefit considerations. He said national and international health organizations continue to endorse fluoridation and presented Israel's temporary policy change and subsequent actions as a case study.

Council reaction and next steps

Councilmembers asked technical questions about exposure measurements (urinary fluoride vs. water concentration), whether topical fluoride is an effective substitute for community fluoridation, and how responsibilities would shift among city, county and state if policy changed. Several councilmembers said they remained undecided; Councilmember Cotton asked staff to place a fuller discussion on the Thursday council agenda and requested follow‑up material from the panel. No formal motion or vote to add or remove fluoride from City of Clearwater water was taken at the March 31 meeting.

Public comment and context

Public speakers and dozens of written comments have ranged from support for maintaining fluoridation to calls to end it; council members said many emails received in the prior weeks were from outside the city as well as from local residents. State legislative activity on the subject was noted; councilmembers said state or county action could affect any local decision.

Ending

Councilmembers said they would continue the discussion, collect additional technical materials and briefings, and consider whether to schedule a formal vote. The panel and staff will provide follow‑up materials for the next scheduled meeting.