Every policy, strategy or activity that aims at the sustainable management of water for the protection of the hydrosphere and in order to meet the demands for water in the present and the future are collectively called water conservation. Growth, affluence, population all influence the amount of water that is to be used. Pressure on the present natural water resources has considerably increased due to factors such as climate change increasing the importance of water conservation. Many countries have already implemented laws and policies to ensure water conservation. Dams and water harvesting are examples of ways water can be conserved and put to good use.
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The 22nd of March is celebrated as world water day every year to show the importance of water and the importance of water conservation. Some facts about water are:
Water constitutes 78 % of the earth, while land covers the rest.
The human body is composed of 60 percent water, whereas a Jellyfish is over 95 percent water.
Most of the water (97 percent) is saline.
percent of the water available is fresh drinking water that can be consumed by humans.
Most of the freshwater on earth (69 percent) is trapped in glaciers.
The present theory which is accepted by scientists’ states that life had originated from water; thus, water is, in fact, a necessity for organisms to grow and survive. Water is an essential part of living beings, and the water lost from the human body needs to be appropriately replenished to ensure its proper functioning. We need water for everyday tasks such as washing, cleaning, bathing and most of all, for drinking. Farming, industries, hospitals also need a regular supply of water. The evaporation and condensation of water give rise to the water cycle, which is essential in the sustenance of life on earth. The importance of water can be further understood by taking a look at the various functions of water in our bodies. Water forms the blood plasma and acts as the saliva, which helps to digest food and also helps in excretion and transportation of nutrients in our body.
The importance of water conservation is widely recognised all over the globe with the increasing instances of water shortage ravaging countries. Dams and water harvesting are beneficial in the water conservation process.
Dams are beneficial in water conservation. Dams not only help to store water but are also used in the generation of hydroelectricity. Dams also help to prevent floods and also provide water during times of drought. Hence, dams are vital and useful for agriculture. Water also helps in providing drinking water for all in regions where water is scarce. Dams can also be used in developing reservoirs which can be used for agricultural and other purposes. However, dams also cause the displacement of local tribes and lead to loss of livelihood and shelter for the local people. Dams may also adversely affect the geology and the ecosystem while being a financial burden for the country.
Water harvesting is the term used for the collection of excess/runoff rainwater for other purposes. It is made sure that the water so collected is free from any pollutants and can be obtained from various sources. Water harvesting ensures that rainwater does not flow away but is put to good use. Rooftop rainwater harvesting and surface rainwater harvesting can be used to recharge the groundwater and help in water conservation. Water harvesting reduces the likelihood of droughts and floods while also ensuring a steady supply of freshwater for drinking and other household activities.
In India, rainwater harvesting is a practice that has been going on for more than 4000 years. The process is quite simple since it involves the accumulation of rainwater and its storage. This practice has been carrying on from ancient times to provide drinking water as well as water for livestock and irrigation. Tamil Nadu was the first state to make rain harvesting compulsory for all buildings to combat the rapid depletion of groundwater.
1. What are some ways of saving water?
Answer: Some simple ways to save water are repairing leaking taps, taking a bucket bath instead of a shower, using water judiciously and using rooftop rainwater harvesting for water conservation.
1. What is the importance of water?
Answer: Water plays a significant role both within the body and ensuring the survival of all life on the planet. About 80 percent of the earth is water, while 60 percent of our bodies are composed of water. Water helps in transportation of nutrients within the body and also in the excretion of unwanted substances from the body. Water is an essential aspect of agriculture as well as industries and is also used in our day to day tasks such as washing, drinking and cleaning. Moreover, the human body cannot store water; hence the supply of freshwater is essential in sustaining the growing population. This is the importance of water.
2. How to conserve water?
Answer: The importance of water conservation arises from the severe shortage of freshwater that the world may have to face in the future due to the rising population and limited freshwater resources. Water conservation can be done through simple tasks like using water resources judiciously, utilising a bucket bath and practising rainwater harvesting. Dams can be constructed to conserve rainwater and also to generate electricity. Rooftop rainwater harvesting and surface runoff harvesting can be exercised by the households to conserve rainwater and recharge groundwater. Use of modern irrigation and bringing about a change in the cropping patterns in agriculture also helps in rainwater conservation.