Water is the essential constituent for life and this proceedings covers the role of water in materials, earth science and geo/biosphere. It assesses the role of water in a range of earth processes and considers environmentally friendly approaches to preserving water environments for present and future generations. Included are transport phenomena and chemical reactivity, origin of geofluids, fluid-rock interactions, water as a trigger for earthquake and volcanic eruptions, and the global circulation of water in the Earth's interior (crust, mantle and core), as well as the cause-and effect relationship between water, ecology and life in various environments.