Mahesh Gupta (27 September 1954), is an Indian entrepreneur, and the chairman of Kent RO Systems. Best known as India's Pure Water Man, he is the pioneer behind bringing the reverse osmosis (RO) technology to India. He founded Kent RO Systems in 1999 which has developed into one of the major players of the water purifying business in the country. The RO technology addresses the issue of dissolved impurities in drinking water and guarantees 100% pure water with 0% water wastage. This process is patented as the world's first 'zero water wastage' technology developed by Kent RO Systems.