The developed countries – USA , Germany, Russia, EU have shunned RO Systems for producing drinking water. They largely depend upon the lters with activated carbon, for puri- cation of drinking water. The RO Water Systems in India and third world countries have been mushrooming rampantly, due to vacuum in regulations. And the unawareness about unhealthiness of RO Water, even amongst the educated and elite class in India, is being fueled with fascinating and utterly deceptive TV Ads, with celebrity endorsements.