Each day the kidneys filter approximately forty gallons of blood but excrete only about 1 percent of the blood’s water and salts. They produce approximately four ounces of urine per hour unless adversely affected by drug intake or favorably affected by the efficient pumping of blood through the body when it is exercising or lying flat. Anywhere between thirty-two to sixty-four ounces of urine are produced daily.

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Typically, a person should produce one to two liters of urine a day.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.