This is a very important and interesting link. However busy, you may be, please open it and read. You will be not only helping yourself, but also your close relatives and friends. My nephew's son, Sidhdharth who is just ten years old,
cries, if we take a cup of water to drink and drink only half of that. He can't tolerate the tap kept opened when you brush your teeth. Are we not elder to him? There is no age limit to learn.
Do not think this is only a propaganda to save water, the statistics here are very interesting and alarming. Please do not fail to open this LINK
You will not regret for having added some more to your knowledge.