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Globally, an estimated 2.5 billion people lack access to improved sanitation.
Diarrheal disease is a common cause of morbidity and mortality.
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