What is meant by water security?

Water security refers to the reliable availability of sufficient quantities of acceptable quality water for health, livelihoods, and well-being. It encompasses not just the physical availability of water but also its accessibility, quality, and management to ensure that communities can meet their basic needs and sustain their economic activities.

This concept is critical in addressing issues such as water scarcity, ensuring safe drinking water, and supporting agricultural practices, which are essential for food security and public health. In contrast, the other options do not reflect the comprehensive nature of water security; for instance, a condition where demand exceeds supply highlights a crisis rather than security, while excess water or methods of transportation relate to specific issues rather than the overall security of water availability.