Why is fluoride added to the water?

Fluoride is added to the water, as required by state law (passed in 1970), to protect teeth. According to the American Dental Association, persons who drink fluoridated water have a 40 to 50% reduction in the number of cavities that would have occurred without fluoride. Some home filtration devices remove fluoride from water, and bottled water may or may not contain fluoride.

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1. How often is my water tested?
2. What is the hardness of my water?
3. Why does North Texas Municipal Water District add chlorine to the water?
4. Why does my water look cloudy?
5. What are the white particles coming from my tap?
6. What is the pH of Garland's water?
7. Why is my water discolored? Is this safe?
8. Why is fluoride added to the water?
9. How do I get information on bottled water and home filters?
10. Why does my water have an earthy taste and odor during the summer months? Is the water safe to drink?