Babies should not be given water before 6 months of age because breast milk or infant formula provides all the hydration and nutrition they need during this period. Giving water too early can lead to problems such as diarrhea, malnutrition, or electrolyte imbalances, and may reduce their intake of breast milk or formula, which is essential for their growth
. Around 6 months old, when babies start eating solid foods, it is safe to begin offering small amounts of water. This helps them get used to the taste and practice drinking from a cup. At this stage, water should be given in small quantities (about 4 to 8 ounces per day) and should not replace breast milk or formula, which remain the primary sources of nutrition until the baby is 12 months old
. When giving water to babies, it is important to use boiled and cooled water to ensure safety, especially if tap water quality is uncertain. Bottled water is generally not necessary unless in emergencies, and mineral water should be avoided due to high mineral content that can be harmful to babies' kidneys
. In summary:
- No water before 6 months; only breast milk or formula.
- Start offering small amounts of water around 6 months when solids begin.
- Continue breast milk or formula as main nutrition until 12 months.
- Use boiled and cooled water for safety.
- Limit water intake to about 4-8 ounces per day between 6-12 months.
This approach supports healthy hydration and nutrition for babies during their first year
