The importance of water

Water plays an important role in the survival of humans, plants and animals on the planet. Every organism requires water in order to survive.

When two thirds of the Earth is covered in water and three fourths of the human body consists of water, it is evident that water plays an important role in the survival of humans and basically the whole ecosystem on Earth.

In humans, water is responsible for the important jobs of transporting, dissolving, replenishing nutrients and organic matter, while carrying away waste material. It also regulates the activities of fluids, tissues, cells, lymph, blood and glandular secretions.

An adult human body requires 42 liters of water in the system and a loss of even approximately 2.7 liters can cause the body to start feeling symptoms of dehydration such as irritability, fatigue, nervousness, dizziness, weakness, headaches, etc.

In addition to the role of water in the human body, it is also required for external reasons such as cooking, cleaning, bathing, farming and survival of pets. For drinking and consumption, clean water is essential as contaminated water results in a lot of germs directly entering the body, causing havoc to the system.

There are many sources of water, a large amount of it being from rain water. Other sources include rivers and lakes. Oceans and seas do not serve as a good source of consumable water because of its high salt content. There are many methods of collecting rain water such as dams, reservoir, rock catchment areas, excavated dams, rainwater tanks, etc.

Even after water proving to be such as priceless commodity, our reservoir of consumable water is reducing at a very fast rate mainly because of excessive use and contamination. Much of our water has been contaminated from dumping of toxins, harm to the ecosystem (by over fishing or dumping of soap and other such materials) and other such human activities. Releasing of excessive carbon monoxide has also resulted in the rain water to become more acidic in nature. This has resulted in many of our water requiring to be artificially purified for consumption by adding bleach and other chemicals to purify it – which may harm our system in the long term.

In many continents such as Africa and certain parts of India, access to pure drinking water is scarce and requires people to travel for miles to acquire water or drink contaminated water.

The most common way to save water is to monitor the usage of water. Many people unintentionally end up wasting a lot of water such as running the tap when brushing, showering for long periods of time, running the tap (even when not needed) while washing dishes or clothes, etc. If such excessive wasting can be monitored and stopped, it is estimated that more than half a million gallons of water can be saved per day only in the US.

Image Courtesy: redcross.lk

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