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 ...

Microplastics have shifted from an abstract pollution problem to something that can show up in the glass on your kitchen ...

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 ...