Drinking water is essential and indispensable to life itself possible on the face of the earth, it is much more than a well, a resource, a commodity, drinking water is specifically a human right of first order and an element essential national sovereignty itself and, most likely, whoever controls the water control the economy and life in the not so distant future.
Man's efforts to improve the environment in which he lives and improve their quality of life, then depend on the availability of water, there is a close correlation between key water quality and public health, including the ability to access water and the level of hygiene and water between abundance and economic and tourism growth.
Measures to expand and improve public delivery systems of drinking water, contributing to a reduction in morbidity and mortality associated with enteric diseases, because these diseases are associated directly or indirectly with providing substandard water or poor provision water. Currently, 1,400 million people lack access to safe drinking water and nearly 4,000 billion lack adequate sanitation. According to estimates by the World Health Organization (WHO), 80% of diseases are transmitted through contaminated water.
This is because only a small part of the population, particularly in developing countries, have access to water of acceptable quality. It is estimated that in some countries only 20% of the rural population has water of satisfactory quality. Based on these statistics, it is clear the urgent need for awareness about caring for water use. Almost without realizing it, we are seriously jeopardizing this essential resource, not for us but for our children's children and their generations, aware that in other parts of the world (or right here in a few years) each drop has a value that we give not.
According to the Programme of the United Nations Environment Programme (UNEP, 2003), water covers 75% of Earth's surface, 97.5% is salt water, only 2.5% is fresh. Ice caps and glaciers contain e1 74% of the world's freshwater. Most of the rest are in the depths of the earth or the earth encapsulated in the form of moisture. Only 0.3% of the world's freshwater is in rivers and lakes. For human use is accessible to less than 1% of the ground surface freshwater on the planet. (See Appendix No. 08)
In 25 years, it is possible that half the world's population, have difficulty finding fresh water in sufficient quantities for drinking and irrigation. Currently, more than 80 countries (40% of the world population) suffer severe water shortages. Conditions may get worse over the next 50 years as the population increases and global warming disrupts rainfall patterns. A third of the global population lives in areas with water scarcity, where consumption outstrips supply. Western Asia is the most threatened region. Over 90% of the population of that region, suffers great stress by water scarcity and water consumption exceeds 10% of renewable freshwater...