The City of Port St. Lucie has temporarily stopped putting fluoride in its drinking water supply in response to health concerns raised by Florida's Surgeon General.
The change affects 95,000 customers.
Dr. Joseph Ladapo said last month that "adding fluoride to water increases the risk of neuropsychiatric disease," citing medical studies.
A St. Lucie County ordinance requires utilities to fluoridate their water but the county attorney has advised against enforcing it due to Ladapo's concerns.
A City spokesman says they want to take the opportunity to review all the data and make the best decision for the safety of Port St. Lucie's residents.
The CDC says many communities add a small amount of fluoride to the water supply to prevent cavities and promote good oral health.