Fresh water comes to be the biggest problem in the world. Many countries do not have enough fresh water to survival in the world, such as China and India. Those countries, however, are focusing on lack of water problem and raising fund to find the cause. To solve lack of water problem, major countries are using 3 methods to do it. First way is distillation from sea water. Second way is reducing the pollution of the fresh water. Third way is the elevation of utilization of water resources.