George Gray

Professor of Environmental and Occupational Health

Director, Center for Risk Science and Public Health

George Washington University

School of Public Health and Health Services

Imagine brushing your teeth with reclaimed wastewater. Would you be comfortable doing so? Would testing data indicating that this water was cleaner than the public water supply be enough to put aside any trepidation?

On a recent visit, I learned about Singapore’s NEWater1. Surrounded by the sea, with limited surface area and reservoir capacity and a growing population, Singapore has embraced advanced technology – including nanotechnology – to meet its water needs. The program uses advanced filtration, reverse osmosis and disinfection technologies ...

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