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is water taken from the environment
The natural environment encompasses all living and non-living things occurring naturally on Earth or some region thereof. It is an environment that encompasses the interaction of all living species....
, and is subsequently treated or purified to produce potable water in a water purification
Water purification is the process of removing undesirable chemicals, materials, and biological contaminants from contaminated water. The goal is to produce water fit for a specific purpose...
works. Raw water should not be considered safe for drinking or washing without further treatment.
In Eastern Europe
Eastern Europe is the eastern part of Europe. The term has widely disparate geopolitical, geographical, cultural and socioeconomic readings, which makes it highly context-dependent and even volatile, and there are "almost as many definitions of Eastern Europe as there are scholars of the region"...
, the term "raw" water is also used when making tea and describes water that has not been boiled. Tradition forbids brewing tea with "raw" water as well as adding such water to already brewed tea. Instead, the water must first be boiled and then left to cool to the required or desired temperature.