Water is one of the body's most essential nutrients; however, healthy babies do not need extra water for the first six months of life because it exists naturally in breast milk and is added to formula. Giving babies extra water can be dangerous as it can disturb the baby's electrolytes and potentially lead to seizures. So, when can baby start drinking water?
And, remember, the American Academy of Pediatrics recommends breast milk or formula as baby's sole source of nutrition for the first six months of life and a major source of nutrition for the first year. So, at six months, give baby a few sips, but don’t fill her up on water.