Water Loss

Urine accounts for 1.5 liters of the body's daily water loss. The colon accounts for 0.5 liters of daily water loss. The skin loses 0.3 liters of water per day through perspiration. The lungs expel 0.2 liters of water per day through respiration. The body loses approximately 2.5 liters of water daily through multiple physiological pathways.