Safer water for poorer nations. (device uses ultraviolet light to kill pathogens in drinking water)(Technology)(Brief Article)

From: Science News | Date: March 2, 1996 | Copyright information

In the world's developing nations, more than 400 children die every hour from diseases such as cholera, typhoid fever, dysentery, and hepatitis, which they contract by drinking contaminated water.

To stem this threat, Ashok J. Gadgil, a physicist at the Lawrence Berkeley (Calif.) National Laboratory, and his colleagues have built a simple device that uses ultraviolet light to rid water of pathogens. The tabletop system takes in water from a well or hand pump, for example, bathes it with ultraviolet radiation from a mercury-vapor lamp, and ...

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