How much water a person drinks

A person’s lifetime water intake depends on lifespan, climate, diet, and activity. For example, 1.5 liters of beverages per day over 70 years adds up to about 38 tonnes of water—but this is just arithmetic, not a universal lifetime total. Needs are not fixed at 1.5 liters: water also comes from food, and adequate total intake varies with age, sex, and conditions. Consuming too much water in a short period can dilute blood sodium and cause hyponatremia. [1–3]