Water Some Facts

Water, as we all know is liquid of life. Humans can survive for several weeks without food, but for only a few days without water. The exact amount of water a human needs is highly individual, as it depends on the condition of the subject, the amount of physical exercise, and on the environmental temperature and humidity.
All living organisms require water for their metabolism, growth and other activities of life. All nourishment/nutrients transfer within the body of any organism, Plant or Animal, is possible through it only. As we all know that almost 70% of the Earth is covered with water, but it is a fact that only 1% of the water is available in a form which could be used by living organisms.
A good estimate is to take your body weight in pounds and divide that number in half. That gives you the number of ounces of water per day that you need to drink. For example, if you weigh 160 pounds, you should drink at least 80 ounces of water per day. If you exercise you should drink another eight ounce glass of water for every 20 minutes you are active. If you drink alcohol, you should drink at least an equal amount of water. When you are traveling on an airplane, it is good to drink eight ounces of water for every hour you are on board the plane. If you live in an arid climate, you should add another two servings per day. As you can see, your daily need for water can add up to quite a lot.
The water commonly used for drinking or household usages is not pure water it contains some impurities e.g. minerals etc., these impurities are essential for life up to a certain extent but when the concentration of these increase to higher side they turn out to be harmful and create metabolic malfunctioning & other diseases.
Usually water contains the natural impurities of following kinds on the basis of their Chemical Composition & behavior.
1. Organic : impurities generated through dead & decaying living organisms.
2. Inorganic : Minerals , Metals & Non metals etc....