Florida is poised to become the second state to ban fluoride in public drinking water, over the concerns of dentists and public health advocates who say the mineral is a safe, effective way to protect people of all ages from developing cavities.

The CDC says fluoridation is among the 10 greatest public health achievements of the 20th century. Utah recently became the first state to ban it.

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.