The general recommendation for daily water intake varies slightly depending on the source, but the majority of guidelines converge around these amounts for healthy adults:
- For men: About 13 to 15.5 cups (approximately 3 to 3.7 liters) of total fluids per day
- For women: About 9 to 11.5 cups (approximately 2.1 to 2.7 liters) of total fluids per day
These amounts include all fluids consumed, not just plain water, and also take into account water content in food. Factors such as physical activity, climate, health conditions, and pregnancy or breastfeeding can increase the need for fluids. It is important to drink according to thirst signals and individual needs, rather than strictly aiming for a fixed amount. People in hot climates or who are very active may require more water to stay hydrated. Here is a summary from the National Academy of Medicine and health sources:
- Men: about 13 cups (104 ounces) to 15.5 cups (3.7 liters)
- Women: about 9 cups (72 ounces) to 11.5 cups (2.7 liters)
- Pregnant women: about 10 cups (80 ounces)
- Breastfeeding women: about 12 to 13 cups (around 3 liters)
- Kids need less water depending on age, from about 4 cups to 11 cups per day
Overall, drinking around 2 to 3 liters (8 to 13 cups) of fluids daily is a good general guideline for adults, adjusted for individual circumstances.
