How does the body control its use of water by the amounts of urine it produces?

The body regulates water use through the kidneys, which filter blood to produce urine. When hydration levels are low, the pituitary gland releases antidiuretic hormone (ADH), prompting the kidneys to reabsorb more water and produce concentrated urine. Conversely, when hydration is sufficient, lower levels of ADH lead to increased urine output and more diluted urine. This fine-tuning helps maintain fluid balance and homeostasis in the body.