The adequate intake (AI) for fluid intake for a specific group of people is the amount that is likely adequate for most people in that group.
- For male adults, the AI is 3.7 liters, or nearly 16 cups, of water daily.
- For female adults, the AI is 2.7 liters, or nearly 12 cups, of water daily.
Most of this amount comes from fluids that you drink, though a minority comes from foods like soup, fruit, vegetables, and other foods with a high water content.