Published: Oct 11, 2011 7:10 PM EDT

CLEARWATER, Fla. (AP) - The commission for one of Florida's largest counties is again debating whether to remove fluoride from the area's drinking water.
During Tuesday's Pinellas County Commission meeting, about 30 people spoke out for and against water fluoridation. The commission voted 4-3 on Oct. 4 to remove fluoride from the water. Tuesday's meeting was supposed to be a discussion about when to remove the fluoride from the system, but some commissioners who voted against the measure wanted the board to reconsider.
At least one commissioner said the board should consider putting the issue on a ballot referendum.
Fluoride proponents say the chemical, which has been added to many U.S. water supplies for decades, prevents cavities. Opponents say it is a toxic substance that should not be added to the public water supply.

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