Turning sewage into something clean enough to release into a river requires multiple stages of treatment. And before groundwater, reservoir water or river water can be used as drinking water, it must ...

Hydrologic Cycle: The water cycle is a process that occurs around us without our notice. It involves changes in the state of the water. A water cycle describes how water on Earth remains here and does ...

River deltas experience extreme seasonal changes in water quality that perplex conventional water treatment systems. Industrial development in China, including new power plants, has spurred the ...

Water is a key driver of economic and social development while it also has a basic function in maintaining the integrity of the natural environment. However water is only one of a number of vital ...