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.
How can you take care of a slow sand filter on your own? Although slightly out-of-date, this document provides a detailed and well-illustrated description on how to operate and maintain a simple slow sand filter.
VEENSTRA, S. VISSCHER, J.T. (1985): Slow Sand Filtration: Manual for Caretakers. (= IRC Training series , 1 ). The Hague: IRC International Water and Sanitation Centre URL [Accessed: 06.02.3012]