Drinking more water has no effect on the discharge of gallbladder stones. The cause of gallbladder stones is excessive cholesterol in the bile, which leads to the precipitation of cholesterol crystals, which then evolves into cholesterol stones. The elimination of gallbladder stones often depends on the contraction of the gallbladder and changes in the fluid dynamics of the bile. Whether gallbladder stones can be expelled depends on the size of the gallbladder stones, and if they are expelled into the bile duct, it may be more troublesome to deal with them. In short, there is no way to expel gallbladder stones by drinking water.