It usually depends on if the person actively stays hydrated. The recommended amount to drink is around 8 ounces, so depending on the size of the water bottle, it could vary.
The main difference who is ultimately in charge. Private hospital are normally for profit hospital's run by a number of board members. Religious hospitals are interesting in that they are a religious based organization and receive funding and command from religious figures. Non-profits also have a board of directors, but they are primarily run as more charities or research. Government hospital's are run and funded by the government and are hence more public (unless it is military) and have less financial burden then all the other three.
Wastes from the blood leave the kidneys thru the ureter. From there the waste travels to the urinary bladder. Then the urethra carries liquid wastes from the urinary bladder to the outside of the body