Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
PDF Presentation on water treatment technologies in low income regions of the world, including many pictures and explaining the most common technologies.
BERG, M. HUG, S. (2007): Water Treatment Technologies in Low Income Regions. Lecture "Water Resources and Drinking Water". Duebendorf: Swiss Federal Institute of Aquatic Science and Technology