Keep a fresh pitcher of cold water in the refrigerator at all times, serve water at every meal. Water is more thirst-quenching than sugary drinks. Offer water as a first choice to your children all of the time.
For babies under 12 months old, too much water can be unhealthy. As a general rule, healthy babies under 6 months old do not need extra water. Once they have started on solid foods, their need for water increases and you can offer 2 to 4 ounces at each meal.