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Drinking water that is supplied through a tap . Drinking water or potable water is water that is safe for ingestion, either when drunk directly in liquid form or consumed indirectly through food preparation. It is often (but not always) supplied through taps, in which case it is also called tap water.
The recommended daily amount of drinking water for humans varies. [1] It depends on activity, age, health, and environment.In the United States, the Adequate Intake for total water, based on median intakes, is 4.0 litres (141 imp fl oz; 135 US fl oz) per day for males older than 18, and 3.0 litres (106 imp fl oz; 101 US fl oz) per day for females over 18; it assumes about 80% from drink and 20 ...
How much water you really need is different for men and women. Women should aim for 91 ounces or 2.7 liters per day, while men should have 125 ounces a day or 3.7 liters.
These reference values include water from drinking water, other beverages, and from food. About 80% of our daily water requirement comes from the beverages we drink, with the remaining 20% coming from food. [54] Water content varies depending on the type of food consumed, with fruit and vegetables containing more than cereals, for example. [55]
An improved water source, as defined by the World Health Organization (WHO), refers to a drinking water source that provides adequate and safe water for human consumption. Examples of improved water sources include piped water connections, protected wells, boreholes with hand pumps, packaged or delivered water and rainwater collection systems ...
The physiological processes of drinking vary widely among other animals. Most animals drink water to maintain bodily hydration, although many can survive on the water gained from their food. Water is required for many physiological processes. Both inadequate and (less commonly) excessive water intake are associated with health problems.
A human right to water "generally rests on two justifications: the non-substitutability of drinking water ('essential for life'), and the fact that many other human rights which are explicitly recognized in the UN Conventions are predicated upon an (assumed) availability of water (e.g. the right to food)." [95]
Water is the world's most consumed drink, [27] however, 97% of water on Earth is non-drinkable salt water. [28] Fresh water is found in rivers, lakes, wetlands, groundwater, and frozen glaciers. [29] Less than 1% of the Earth's fresh water supplies are accessible through surface water and underground sources which are cost effective to retrieve ...