What problem did they see in the world?

 What will be the problem that we need to solve in this world? I think the problem in the world is that we have too less water that we can uses in our life. More that half of Earth is surrounded my water, but the problem is that the water we can use in our life is only 3% of whole water in the world. I thought that I need to take an action first to solve. Usually I'm taking shower about 30 minutes and 20 minutes of time is putting the water on my body just not doing anything. Than could be wasting water, so I will try not to do that kind of thing. Also, I often have turn on the water tap and brush my teeth, washing my face. That could be one of the wasting water. I will try not waster water from now.