Louisiana is one vote away from banning fluoride in public water. Dentists warn it could lead to more cavities, especially in kids.

Lawmakers in Florida approved a bill to prohibit certain additives in drinking water, effectively banning fluoride, and the measure now goes to Gov. Ron DeSantis for a signature. If it’s finalized, Florida will become the second state to ban fluoride in municipal drinking water.

Juno, Ala., also saw a steep increase in childhood tooth decay after the city removed fluoride from its water in 2007. One University of Alaska Anchorage study estimated each child incurred an extra $300 in dental bills per year following the removal.