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Background:UNICEF and the WHO estimate that more than 1 billion people around the world are without year-round access to safe drinking water. Each year more than 1.5 million children under the age of 5 years die as a result of waterborne disease in Africa and Asia. Solar Disinfection (SODIS) is a technique for making contaminated drinking water safe where transparent bottles are filled with contaminated water and placed in direct sunlight. The water is safe to drink after 6 hours exposure to the sun.
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