Although water is a renewable resource, and it is renewed by the water cycle. However, this simple fact does not mean there will not be anything like water scarcity. This is because there are so many factors causing a shortage of water. First of all, as the population of the whole world is increasing on a daily basis, there is also an increase in demand for water. Although water is renewable, when water is released to the earth, it does not come back in the same proportion.
In addition to this, the urban areas are the most affected places because people will continue to move from rural areas to urban areas. Climatic change is another factor. Climate change can lead to the redistribution of rainfall. This is what happens, when a particular region does not have a regular rainfall pattern. Another factor is pollution. Most sources of water have been polluted with industrial wastes so much that they are not fit for consumption.