after lots of physical activity or exercise

with severe vomiting or diarrhoea, or if they have a fever

if they take certain medications, such as diuretics

if they don't drink enough, especially during times of illness

in hot weather

Remind them to drink before a sports game, and encourage them to have a few mouthfuls of water during any breaks in the game.

Make sure they drink water afterwards to make up for any sweat they have lost.

Keep a jug of fresh tap water within reach, and on warm days, keep the jug of water in the fridge.

Send a labelled, clear water bottle to the school each day.

Make sure that adults role-model by drinking plenty of water too.