<prompt> How much urine does the average adult pass each day?1 gallon1 12 Quarts1 12 gallons2 pints  <response>: As mentioned the average adult bladder holds 500 ml 12 quart.However, a male can have more as a result of his prostate enlarging post operatively or as a result of a side effect of a new medicine just stated. Nurses can see 1000 ml 1 quart up to 1500 ml 1 12 quarts emptied into a foley drainage bag just after a urinary indwelling catheter is successfully inserted. If not done by the nurses, the person has to be treated with instruments by a urologist.Bonus Info: Nurses used to clamp shut the bladder drainage mid way for 12 hour in the belief that this would prevent bladder spasms by the rapidly contracting bladder after catheterization. This has been disproven. Now all urine is allowed to exit as fast as it does. 