The Filtered water bottle contains active carbon filter technology to remove unwanted contaminants from your drinking water. The standard that governs the quality of public and private drinking water is met. It is very easy to use: as you drink, the water passes through the carbon filter where the negative ions of the contaminants are drawn to, and captured by, carbon granules. The result s amazing, you have your very own filtered water wherever you are. Just fill up the bottle with the tap water and enjoy filtered water free of chlorine and other common organic contaminants--with no resulting plastic water bottle waste.