Question: how many litres of water should a 6 year old drink?
Answer: Assuming 70-80% of fluid in the diet comes from drinks (20-30% from food) the EFSA recommendations from drinks only are equivalent to 1.1-1.3 litres per day for 4-8 year olds, 1.3-1.5 litres per day for 9-13 year old girls and 1.5-1.7 litres per day 9-13 year old boys.