environmental engineering

John Fredricks/NurPhoto   By Taufiq Ihsan, Universitas Andalas   More than 2 billion people around the world do not have access to safe, uncontaminated drinking water. Around 418 million of them live in African countries. The problem is most acute in rural communities, where people’s primary water sources are rivers, lakes and hand-dug wells, which are often contaminated with harmful pathogens. This contamination is caused by inadequate sanitation facilities, open […]