TTK Prestige Tattva 2.0 Copper 16-Liter Water Purifier (Brown) Introducing tattva water purifier a unique and one of a kind water purifier which is a blend of tradition and modernity. Its all natural advanced fact filter removes harmful bacteria, protozoa and cysts from the water to make it safe and clean. Tattva brings the goodness of Indian tradition to bring you safe and clean drinking water to keep you and your family happier and healthier.