This booklet was prepared by Biome Environmental Trust for the Wipro earthian schools program. While the target audience is school students from 6th to 12th stds, it is valuable for people of any age. The Kannada version is available at https://www.slideshare.net/biometrust/wipro-earthian-water-booklet-kannadapdf/biometrust/wipro-earthian-water-booklet-kannadapdf