Simple water filter can nail arsenic

7:33pm, May 30, 2004

From Montreal, at a joint meeting of the American and Canadian Geophysical Unions

Field tests in Nepal suggest that people who live in areas with arsenic-tainted aquifers may be able to purify their drinking water by passing it through a low-cost, low-tech filter with a simple active ingredient—a few handfuls of iron nails.

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