Why is there no specific recommended intake of water?
A review of data on water needs was conducted as part of the Dietary Reference Intake process. It was found that a wide range of intakes are compatible with normal hydration, and thus a specific requirement could not be set. Higher intakes of water are required for those who are very active or exposed to hot environments. In addition, many foods and beverages are sources of water and no one source is essential for normal physiological function and health. Plain drinking water is promoted in the Food Guide as a calorie-free way to respond to thirst.
