Windsor’s tap water is going fluoride-free.

After six hours of debate Tuesday night, city councillors voted 8-3 to stop adding the chemical to the water supply — a practice Windsor began more than half a century ago.

Fluoride opponents argued the practice is outdated, while supporters said it’s an effective way to fight tooth decay.

The money saved by cutting out fluoride will go to oral health and nutrition education programs for the next five years.