Our very existence depends on water – water to drink and water to grow food. Agriculture relies on freshwater from rivers, lakes and aquifers. Rainfed agriculture and much of livestock production depend on the water from limited rainfall. Moreover, water-related ecosystems also sustain livelihoods, food security and nutrition by, inter alia, supporting inland fisheries and aquaculture. Supplies of uncontaminated freshwater are needed for safe drinking water, and to ensure hygiene and food safety standards to guarantee human health. In addition, water has numerous other uses and supports other human activities.