Ashok Gadgil (b. 1950) was born in India and came to the United States for graduate school in the 1970s. Growing up in Mumbai, Gadgil witnessed 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 purifier that uses ultraviolet light to render pathogens in water harmless. The UV Waterworks produces safe drinking water inexpensively, requires very little maintenance, and can be powered by a car battery, a bicycle generator, or solar cells.
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