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Fresh water availability is already a major environmental problem in several areas of the world and will become a global problem soon. That is why it is foolish to continue to flush billions of liters of treated fresh water down our toilets everyday. Since 40% of the 6 billion people on earth use toilets, it is a lot of water. Rohit embarked on a project to redesign the water closet / flush to reduce the consumption of water. He made this possible with a simple mechanism added to the conventional closet that creates a partial vacuum when the user pushes down the flush lever. He called it the Vacu-Flush.