Water is the most valuable resource on the earth. Water is the necessity of our life and we must drink it everyday. Now, many people can not drink clear water, because many of them are badly polluted. So, in order to save water, the first thing we should do is reduce water pollution. In addition, we should develop good habits to save water. For example, turn off the tap after we use. Or we should recycle the water to make it full use. In one word, water is scarce for all of us and we should try our best to save it.