Water allocation (see also water allocation) is associated with a certain probability that it will be supplied because river flows vary with time. This reliability of supply has to be high for sanitation.
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.