Growing up in Mumbai, India, Ashok Gadgil witnessed firsthand the disease and death caused by contaminated water. As an adult, he put his training as a scientist to work on a solution to this widespread problem. His invention—the UV Waterworks—is a low-cost water purifier that uses ultraviolet light to kill pathogens in the water.
The UV Waterworks produces safe drinking water for about five cents for every 1,000 gallons, requires very little maintenance, and can be powered by a car battery, bicycle generator, wind, or even solar cells.
