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Concept
Water efficiency
Résumé
Water efficiency is the practice of reducing water consumption by measuring the amount of water required for a particular purpose and is proportionate to the amount of essential water used. Water efficiency differs from water conservation in that it focuses on reducing waste, not restricting use. Solutions for water efficiency not only focus on reducing the amount of potable water used but also on reducing the use of non-potable water where appropriate (e.g. flushing toilet, watering landscape, etc.). It also emphasizes the influence consumers can have on water efficiency by making small behavioral changes to reduce water wastage, and by choosing more water-efficient products.
According to the UN World Water Development Report, over the past 100 years, global water use has increased by a factor of six. Annually, the rate steadily increases at an estimated amount of one percent as a result of population increase, economic development and changing consumption patterns. Increasing human demand for water coupled with the effects of climate change mean that the future of water supply is not secure. Billion people do not have safe drinking water. In addition, there are changes in climate, population growth, and lifestyles. The changes in human lifestyle and activities require more water per capita. This creates competition for water among agricultural, industrial, and human consumption.
Many countries recognize water scarcity as a growing problem. Global organizations such as the World Water Council, continue to prioritize water efficiency alongside water conservation.
The Alliance for Water Efficiency, Waterwise, California Water Efficiency Partnership (formally the California Urban Water Conservation Council), Smart Approved WaterMark in Australia, and the Partnership for Water Sustainability in British Columbia in Canada are non-governmental organizations that support water efficiency at national and regional levels.
Source officielle
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