“Bottled water is bad for young children. I just came back from my dentist who told me there is no fluoridation in bottled water and without it kids get more cavities.”
The fluorides added to municipal water supplies are waste products from the phosphate fertilizer industry; fluorides are poison; fluorides do not prevent tooth decay. People who understand this buy bottled water to avoid the fluorides.
Fluoridation prevents tooth decay in young children. Not in adults, but in children, when their teeth are forming. This is 1940s technology, not in dispute.
There is some recent controversy about fluoride being a carcinogen. But if you read the actual literature (versus the scare-sheets put out by the Area 51 types), you’ll see that the minimal and unproven risk of increased cancer versus the certainty of preventing tooth decay makes fluoridated water a good choice for young children today.