To reduce your baby’s chance of developing even mild fluorosis, it can help to use low-fluoride water (less than 0.7 mg/L) when you prepare your baby’s formula, including some types of tap water, and water that has been purified, deionized, demineralized, distilled, or filtered by reverse osmosis.
In this way, what type of water do you mix with baby formula?
For example, you might use ready-to-feed formula, which contains little fluoride, or alternate between using fluoridated tap water and low-fluoride bottled water — such as purified, demineralized, deionized or distilled bottled water — to prepare concentrated formula.