Can babies eat water?

✅ Yes 6–8m ✅ Yes 9–11m ✅ Yes 12m+

✅ Cross-checked against pediatric feeding guidance · Oct 2026 audit

⚠️ Educational info only. If your baby is choking and cannot cry or cough, start infant choking first aid and call 911 (US). For a suspected allergic reaction or poisoning, call your pediatrician — or Poison Control (US): 1-800-222-1222.

Yes — from around 6 months, small sips of plain water with meals are fine. Before 6 months, no: breast milk or formula covers everything.

The age-by-age verdict

Age	Verdict	How it reads
6–8 months	✅ Yes	Fine with safe prep (see below)
9–11 months	✅ Yes	Fine with safe prep (see below)
12 months +	✅ Yes	Fine with safe prep (see below)

Why

Young babies get all the fluid they need from breast milk or formula, and their kidneys are not ready to handle much plain water — too much can dilute sodium in the blood (water intoxication). Once solids start, around 6 months, small sips of water with meals are healthy and help build cup-drinking skills.

How to serve it safely

Offer plain water in an open cup or a free-flow trainer cup with meals, and keep it to small sips in the first months of solids. Never dilute formula with extra water, and skip juice entirely in the first year — water is the drink to practice with.

Warning signs to watch for

Water intoxication shows as unusual fussiness, drowsiness, low body temperature and puffiness in the face — it is rare and comes from large volumes, not mealtime sips.

When to call for help

If your young baby has drunk a large amount of water and seems unusually sleepy or irritable, contact your pediatrician the same day. For any emergency, call 911 (US). US Poison Control: 1-800-222-1222.

Common questions

How much water is too much for a 7-month-old?

Mealtime sips from a cup are fine, but water should not become a main drink before the first birthday — milk feeds still provide the bulk of fluids. There is no need to count; just keep it to sips and let milk feeds lead.

Can I give my 4-month-old water on a hot day?

No. Before 6 months, breast milk or formula alone is right, even in hot weather — feed a little more often instead. Ask your pediatrician if you are worried about hydration.

Is bottled or filtered water better for babies?

Any clean, safe drinking water is fine. In areas with unsafe tap water, use bottled water — and follow guidance on boiling for formula preparation from your pediatrician.

More drinks & sweeteners for babies

Honey🚫 NoNo — not before the first birthday. Honey can carry spores that cause infant botulism; after 12

This page is general educational information, not a substitute for professional medical advice. Every baby is different — if your baby ate something concerning or is unwell, contact your pediatrician right away. Emergencies: 911 (US). Poison Control (US): 1-800-222-1222.