assumed that adults On average, you should drink about 2.5 liters of water per day. How to check your body's hydration. Detailed information is obtained from measurements taken from body composition analyzers. body moisture What percentage of water the female body's hydration is 40 to 60 percent, the male body's hydration is 50 to 65 percent. The body is properly hydrated. Water should be provided regularly throughout the day.