how can we protect water?以上面的为题写给英语作文.80词左右.

nowadays,water problem is the biggest problem around the world,we faced with the water shortage.so ,we must do something to protect water.
first,we should save water,do not waste a little water,because there are so many people in the world have no water to drink,then,we should not throw away the used thing anywhere we want,because it can make the water dirty,what is important is that we should take measures to stop the factories pour dirty water into river.
this is my opinion about how to protect water.