How Much Water Should Breastfeeding Moms Drink. Keep a glass of water handy and drink it every time you finish nursing your baby. Breast milk is about 90% water.

However, it isn’t necessary to drink extra water, milk, or any other fluid to. Wine or 1.5 ounces (44 milliliters) of 40% As a nursing mother, you need about 16 cups per day of water, which can come from food, beverages and drinking water, to compensate for the extra water that is used to make milk.