Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 12/9/2025

Fluid Intake Recommendations for Infants and Young Children

Introduction to Fluid Needs

  • The American Academy of Pediatrics recommends that breastfed infants do not require additional water until they start solid foods, at which point small amounts (about 60-120 ml) of water can be given 1
  • For children around 1 year of age with a weight of approximately 10 kg, the total fluid requirement is 1000 ml/day (100 ml/kg/day for the first 10 kg) 4, 3
  • The World Health Organization suggests that about 20% of total water intake comes from food (mainly fruits and vegetables) 3

Fluid Requirements by Age

  • For infants over 6 months, water can be introduced in small amounts (about 60-120 ml) during meal times 1, 2
  • Children around 1.5 years of age with a weight of approximately 12 kg require about 1100 ml of fluid per day 3, 4
  • The European Society for Paediatric Gastroenterology, Hepatology and Nutrition recommends that children should drink water regularly throughout the day, not just at meal times 3

Hydration Assessment

  • Adequate hydration is indicated by moist mucous membranes and normal urine frequency (at least 6-8 times per day with pale urine) 3, 5
  • The American Academy of Pediatrics suggests that urine output and color can be used to assess hydration status in children 1

Factors Affecting Fluid Needs

  • Fever, hyperventilation, or hypermetabolism increase fluid needs and require adjustments above basic requirements 4, 3
  • Hot weather or high environmental temperatures require additional fluid intake 4, 3
  • Diarrhea, vomiting, or other gastrointestinal fluid losses require fluid replacement 5

Fluid Intake Guidelines

  • Water should be the primary beverage for hydration 3
  • Low-fat or non-fat milk contributes to fluid needs and should be included in the daily diet 3
  • Fruit juice should be limited to a maximum of 4 ounces (120 ml) per day for children aged 1-3 years 3

Practical Considerations

  • Offer water at regular intervals, not just when the child asks for it 3
  • Use safe tap water, which contributes to fluoride intake for dental health 1
  • Avoid relying too heavily on milk or juice for hydration instead of water 3
  • Avoid giving sweet drinks as a replacement for water 3
  • Adjust fluid intake according to weather conditions or illness 4, 3

REFERENCES

1

Introduction to Infant Hydration Guidelines [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

3

Recommended Daily Water Intake for a 2-Year-Old Child [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

4

Water Intake Guidelines for Infants Starting Solid Foods [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025