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A similar definition of water security by UN-Water is: "the capacity of a population to safeguard sustainable access to adequate quantities of acceptable quality water for sustaining livelihoods, human well-being, and socio-economic development, for ensuring protection against water-borne pollution and water-related disasters, and for ...
Water use is considered inefficient if the same purpose of its use can be accomplished with less water. Technical efficiency derives from engineering practice where it is typically used to describe the ratio of output to input and is useful in comparing various products and processes. [ 56 ]
Some of the areas of work of the Protocol are: small scale water supplies, water supply and sanitation in extreme weather events, water-related disease surveillance, equitable access to water and sanitation etc. [36] The Protocol on Water and Health entered into force in 2005. As of 2013, it has been ratified by 26 European states. [37]
The water, energy and food security nexus according to the Food And Agriculture Organisation of the United Nations (FAO), means that water security, energy security and food security are very much linked to one another, meaning that the actions in any one particular area often can have effects in one or both of the other areas.
The commercialization of water is offered as a response to the increased scarcity of water that has resulted due to the world population tripling while the demand for water has increased six-fold. Market environmentalism uses the markets as a solution to environmental problems such as environmental degradation and an inefficient use of resources.
Water resource policy varies by region and is dependent on water availability or scarcity, the condition of aquatic systems, and regional needs for water. [5] Since water basins do not align with national borders, water resource policy is also determined by international agreements, also known as hydropolitics. [6]
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New ways to deal with water are constantly being developed and tested, such as the underground storage of water, storing water in reservoirs in large parking garages or on playgrounds. [90] Rotterdam started a project to construct a floating housing development of 120 acres (0.49 km 2 ) to deal with rising sea levels. [ 91 ]