Hi all, I am a biotechnology student one of my recent project proves that most of the human diseases are coming from harmful bacteria. The non-purified water is the main source of these harmful bacteria. So how to get a very safe water which does not contain any bacteria? Buying a best home water coolers are the very effective solution to have a safe and the cool water. They are not using any toxic chemicals to purify the water as many water coolers are currently doing. The stoning of cold water also produces some bacteria but the home water coolers having the technology to avoid such bacteria even the water is cold.