The capillary zone is the area in the soil where water can rise up slightly through the cohesive force of capillary action. It is generally an intermediate zone in the vadose zone between the dry zone, above the groundwater table.
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.