How Much Water Intake for Kids Is Right for Summer Season?

Why Water Matters for Children

Water makes up about 60 to 75 percent of a child's body weight. It:

• Regulates body temperature through sweating.
• Carries nutrients and oxygen in the blood.
• Helps digestion and prevents constipation.
• Lubricates joints and cushions organs.
• Flushes waste products through the kidneys.
• Keeps skin healthy.
• Supports concentration, mood and learning.

Even mild dehydration can cause tiredness, headaches, irritability and poor concentration, and in children it can progress to serious illness more quickly than in adults.

How Much Water Does a Child Need?

Needs depend on age, weight, activity, climate, diet and health. The following are widely used general guides for total fluids per day, including water, milk and the water in food. About 20 to 30 percent of fluid typically comes from food.

Infants Under Six Months

• Exclusively breastfed or formula-fed babies need no extra water, even in hot weather. Breast milk is about 88 percent water and meets the baby's fluid needs. Giving water can reduce milk intake, risk infection from unsafe water and, in young infants, lead to dangerous drops in sodium (water intoxication).
• Feed on demand. Signs of enough milk include six or more wet diapers a day, regular soft stools and steady weight gain.

Infants Six to Twelve Months

• Once solids begin, offer small sips of clean, boiled and cooled water (about 120 to 240 millilitres, or half to one cup, a day in total) with meals, using a cup. Breast milk or formula remains the main drink.
• Water helps with the transition to solids and prevents constipation.

Toddlers One to Three Years

• About 1 to 1.3 litres of total fluids daily (four to five cups), including milk and water in food.
• Offer water regularly, along with about 350 to 500 millilitres of milk (two servings of milk or curd).
• Limit juice to a small amount or avoid it altogether.

Children Four to Eight Years

• About 1.2 to 1.6 litres of total fluids daily (five to six cups), as water, milk, and fluids from food such as dal, soups, fruit and vegetables.

Children Nine to Thirteen Years

• About 1.6 to 2.1 litres daily. Girls need slightly less than boys on average, because of body size.

Teenagers Fourteen to Eighteen Years

• About 1.8 to 2.7 litres daily, depending on sex, size and activity. Active teens, athletes and those in hot climates need more.

These are approximate guides, not strict targets. Thirst, urine colour and overall health are better day-to-day indicators.

Extra Fluid Needs

Children need more water when:

• It is hot and humid, as in Gurugram's summers, or when sweating heavily.
• They are active: sports, PE classes, playing outdoors. Offer water before, during and after activity.
• They are ill: fever, vomiting or diarrhoea increase fluid loss and the risk of dehydration.
• They are at altitude or in air-conditioned, dry environments.
• They eat a high-protein or high-salt diet or fibre-rich diet, which needs more water to process.

How to Tell If Your Child Is Drinking Enough

• Urine colour: pale yellow like straw is good. Dark yellow or amber suggests the child needs more fluid.
• Frequency: a child should pass urine every three to four hours while awake. Infants should have at least four to six wet diapers daily after the first week.
• Energy and mood: well-hydrated children are alert, playful and not unusually tired or irritable.
• Mouth and lips: moist, not dry or cracked.
• Tears: present when crying.
• Skin: normal elasticity and warmth.
• Bowel habits: regular, soft stools. Constipation can be a sign of low fluid and fibre intake.
• Growth and weight: steady gain.

Signs of Dehydration

Mild to Moderate

• Thirst and dry mouth.
• Dark urine or fewer wet diapers.
• Tiredness, irritability and headache.
• Dry lips and less tears.
• Sunken eyes or, in infants, a sunken soft spot (fontanelle).

Severe: Seek Urgent Medical Care

• Very sleepy, limp or hard to wake.
• No urine for eight hours or more (or six hours in infants).
• Very dry mouth, no tears, sunken eyes.
• Cold, blotchy hands and feet.
• Fast breathing and fast heartbeat.
• Skin that stays pinched when gently lifted.
• Repeated vomiting and inability to keep fluids down.
• Blood in stool or persistent high fever.

What to Do If Your Child Is Dehydrated or Ill

1. 1Offer small, frequent sips of fluid, such as a teaspoon or small cup every few minutes, rather than large gulps, which may trigger vomiting.
2. 2Use oral rehydration solution (ORS) for diarrhoea or vomiting, as advised by your doctor. It contains the right balance of salts and sugar. Prepare strictly as per instructions with safe, boiled and cooled water.
3. 3Continue breastfeeding or feeding during illness.
4. 4Avoid sugary fizzy drinks, undiluted juices and energy drinks, which can worsen diarrhoea.
5. 5Give light food as tolerated.
6. 6See a doctor if the child is not improving, has signs of moderate to severe dehydration, is a young infant, or has blood in the stool or a high fever.

Can Children Drink Too Much Water?

Yes, though it is uncommon. Excess water can dilute the body's sodium, causing hyponatraemia (water intoxication), especially in infants under six months given water in place of milk, or in children who drink extremely large amounts quickly. Symptoms include nausea, vomiting, headache, confusion, drowsiness and seizures. This is a medical emergency. Avoid forcing a child to drink large quantities, and avoid water challenges and dilute feeds. Always follow the doctor's advice about fluids in infants.

Best Drinks for Children

• Water: the best everyday choice for children over six months.
• Milk: plain milk provides calcium, protein and vitamin D. For children over one year, about two to three servings (350 to 500 millilitres) a day is enough, since too much milk can reduce appetite for other foods and cause iron deficiency.
• Buttermilk and thin lassi without added sugar, and coconut water in moderation.
• Fresh fruit and vegetable soups or watery foods: watermelon, cucumber, oranges, tomato, dal and soups all contribute fluid.

Drinks to Limit or Avoid

• Packaged fruit juices, which are high in sugar. Fresh whole fruit is better. If giving juice, limit to a small cup (about 120 to 180 millilitres) a day for older children, and avoid in infants under one year.
• Soft drinks and sweetened beverages, which raise the risk of obesity, dental decay and diabetes.
• Energy drinks and caffeinated drinks, which are unsuitable for children.
• Flavoured milk with high sugar as a regular drink.
• Tea and coffee, which are not recommended for young children.

Encouraging Healthy Drinking Habits

1. 1Set an example. Children copy what they see. Keep a water bottle with you and drink regularly.
2. 2Keep water accessible: put a bottle in the school bag, at the table and by the bedside, and refill it often.
3. 3Make it appealing: let children choose a bottle with their favourite colour or character. Add slices of cucumber, mint, lemon or berries for flavour, without sugar.
4. 4Build routines: a glass on waking, with each meal, after play and before bed. Link drinking to habits such as brushing teeth or coming home from school.
5. 5Offer water first when children say they are hungry, since thirst can feel like hunger.
6. 6Use water-rich foods such as fruit, vegetables, soups and curd.
7. 7Remind school-going children to drink during breaks. Ask the school to allow bottles in class.
8. 8Offer cool, but not ice-cold, water in hot weather.
9. 9Avoid bribes or punishment around drinking. Keep it relaxed and positive.
10. 10Limit sugary drinks at home, by not stocking them.

Water Safety

• Use safe, clean drinking water. Boil, filter or use treated water, particularly for infants and young children, and in the monsoon when waterborne diseases rise.
• Keep water storage clean, and clean bottles and containers regularly.
• Check water filters and service them on time.
• Avoid roadside water, ice of unknown source and unwashed fruit.
• Wash hands before meals and after using the toilet.

Special Situations

Children with medical conditions such as kidney disease, heart disease, diabetes, cystic fibrosis or those on certain medicines may need specific fluid advice. Follow your doctor's guidance.

Bedwetting is not caused by drinking water. Encouraging most fluids earlier in the day and fewer in the evening may help, but do not restrict total fluid.

Constipation often improves with more fluids and fibre, together with regular toilet routines.

Sports and long outings: carry water, take breaks in shade and avoid heat during peak hours.

Care at Trustmed Hospital

At Trustmed Hospital in Badshahpur, Gurugram, our paediatrics department helps families with child nutrition, hydration and common childhood illnesses, with in-house diagnostics and emergency care open round the clock for dehydration and other urgent problems. For newborns who need extra support, our NICU is available. Book an appointment for your child's check-up.

Frequently Asked Questions