USA - CDC, dental group warn of too much fluoride for babies

"If your household has fluoridated water and your child is taking concentrated formula that's reconstituted, if it's economically feasible to use bottled water to reconstitute it, that would be a good idea," Adair said.
Children are at greater risk, Maas noted, from improper use of toothpaste than from tap water. For years the CDC has urged parents to be careful with toothpaste to avoid children swallowing it and putting them at higher risk of fluorosis.
Since 1996 (USA)toothpaste tubes have carried a warning that parents should consult with a dentist or doctor before introducing a child younger than 2 to fluoridated toothpaste.
"People still don't realize how important it is to control toothpaste use," Maas said.