This condition is called Diabetes Insipidus.
“In 3 out of the 4 types of diabetes insipidus, the regulation system malfunctions and causes the kidneys to think that there is too much water in the body. Because of this, they will continually pull out fluids from the blood stream and turn it into urine.”DiabetesInsipidus.org
“ Depending on how many fluids are consumed over the course of the day, a person with diabetes insipidus may expel over 20 liters of urine over the course of 24 hours.
That’s enough to fill 5 one gallon milk jugs with urine.”DiabetesInsipidus.org