The content of elements in mineral water is basically designed for adult standards, which is a bit high for infants, especially some elements are harmful to infants. The mineral content in each liter of water for infants shall not exceed 100 mg, of which sodium is less than 20 mg and fluorine is less than 1.5 mg. Exceeding this threshold may pose a threat to the kidneys of newborns. Obviously, most mineral water is too hard for children.
But it is best not to give your baby too sweet water, which will affect your baby's intake of other flavors of food or milk.