Write a paragraph on "Water pollution".

Water is very important in our life. We cannot live without water. So water is called life. But polluted water is very harmful for us. Water is polluted in different ways. Man throws waste and rubbish into water. Mills and factories emits chemicals into water. Farmers use chemical fertilizers and pesticides in their fields. They get mixed with water. Thus water is polluted. So, we should not throw away any rubbish into water.