WaterThere is enough water in formula and breast milk to meet your babies needs, so no extra water is really needed. It may be offered during hot weather or when baby is ill. Once your baby starts eating solid foods, he may require more water. disclaimerDenver Data FeedClick to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)