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Globally, an estimated 2.5 billion people lack access to improved sanitation.
The international response to Haiti’s ongoing cholera outbreak has been multifaceted, including health education efforts by communit
Batch water treatment consists of the intermittent use of settling tanks for water clarification, and is a common treatment practice
The Treguine refugee camp in Eastern Chad, is in a semi-arid terrain of hard, crystalline rock, where hard-rock boreholes proved ina