Our primary needs are food, water and shelter; but water is the most important need of every person. Without water, we cannot survive. Even for one day, we cannot live without water. If we have safe and clean water for drinking , we’ll live healthy and prosper. The clean water we drink and which is germless is called potable water. The water we drink in our homes, is supplied by the municipal community. We think that it is safe and germs free but in reality it is not fully safe for using in household works and also for drinking , for the reason that it is filtered in huge tanks ; the big particles and comparatively small particles are filtered but not purified . So we should ensure that we purify the water before drinking.
There are two types of water :
i) The drinking water
ii) The water for household works
There are different sources of water and are classified as :
Natural sources : Rivers , Ponds etc.
Man made resources : Canals, pipeline services etc.
Before drinking water , we should purify it by using certain purifiers . If we drink dirty or unsafe water that contain germs; then we’ll fall ill and certain diseases will be caused such as diarrhoea , typhoid etc. People wash their clothes and their animals also take bath in rivers and pounds ; due to which the water get dirty and several types of germs are generated in the water and are transferred to the infected person to the healthy person . these types of diseases which are transmitted from one person to the another are called communicable diseases . If we take care of some small-n’-small things, then we can maintain our health; because prevention is better than cure. We receive potable water from the canals, rivers, and ponds ; groundwater is also potable. Now, the question is that how is water polluted?
Some ways of water pollution:
Some factories dispose their chemical wastes into the rivers due to which water is polluted. People according to their rituals , throw ashes in water , due to which water is polluted. Due to the lack of education, people dispose the dead bodies also in water bodies , again water is polluted. Due to the excessive use of pesticides, and insecticides our ground water is polluted .
How we can prevent water pollution?
We should organise several programmes to aware people about the cleanliness of water. At school level , we should develop healthy habits in the students, so that they can understand the importance of cleanliness. We should conduct several activities such as plays and skits etc. to aware students about the cleanliness. Court should issue notices to such factories which dispose harmful chemicals in water bodies. We should also aware the factory workers about the safely disposing of harmful chemicals in water bodies. Now , the question is that how can we clean and purify dirty water? The water we dispose in sewage is cleaned and purified by the government in several water treatment plants.
How water is purified in these plants : The dirty water is passed through some parallel bars to remove bigger impurities like polythene bags , fabrics etc. The second step is sedimentation in which comparatively small particles settle down in tank The third step is decantation in which water is separated by the help of a scrapper. The next step is chlorination in which germs are killed by the help of several disinfectants such as ozone , chlorine etc. When the water gets chlorinated it leaves a odour which is then controlled by another process called UV Radiation.
This essay conclude that we should save water because the amount of fresh water on earth is limited. Out of the total area of earth , 75% of the area is covered by water but out of this area only about 2% water is fresh; and even out of this percentage about 1.5%of water is in form of glaciers and 0.3% is groundwater; 0.2% water is usable. Our present Prime Minister Shri Narendra Damodar das Modi has also taken some initiatives such as “Swachh Bharat,Swastha Bharat Abhiyan”. His role in making Indian society aware of the cleanliness and conserving water is significant. CBSE has also initiated a few steps to make the students aware of the cleanliness of the environment and our surroundings .