Pollution is probably the most talked word of the world. It is in fact, the process of making environment dirty or harmful. Our environment is polluted in many ways and forms. Water pollution is one of the environmental pollution. Water is a very important element of our environment. It is an essential element of nature because it saves all kinds of lives on earth. Clean water is healthful but polluted is very harmful for us. Nowadays water pollution is one of the serious problems of the world. Water can be polluted in many ways. Farmers use chemical fertilizers and insecticide in their fields to grow more crops. The rain and floods wash away some of the chemicals. They get mixed river water, canal water, and pond water. Mills and factories pollute water by throwing the waste materials and unsold products into the rivers and canals. Unsanitary latrines in the countryside standing on the banks of the rivers, and canals also pollute water. Again motor launches, steamers pollute water by throwing oil, food waste and human waste. Another aspect is pollution of underground water by arsenic. By drinking this polluted water we often get sick and may even die. Water pollution can be prevented in many ways. First of all we should make the people aware of the fact that water is next to the air. It is called life. So chemical fertilizer and insecticide should not be allowed to mix with river water, canal water and pond water. Mills and factories should not through the waste materials and unsold products into the rivers and canals. Steamers, motor launches and even sail boats should not through oil, food waste and human waste into the rivers and canals. Unsanitary latrines in the countryside should not be built on the banks of the rivers and canals. Govt. should take comprehensive programme to check water pollution. Above all, for a healthier and happier life, massive awareness must be created against water pollution.