Water is one of the most vital natural resources for all life on Earth. Water is strategic important, limited available, vulnerable and economically crucial resource. Water is essential for maintaining human health, precondition of economical development and resource of the natural beauty. The most challenging goal in the 21st century is how to obtain clean water and its alarming signs are already critical. Estimates suggest that nearly 1,2 billion people lack safe drinking water and at least 500 million people suffer from water scarcity. Climate changes are able to speed up this process (World Water Day, 2007). According to studies the range of draught areas are increasing rapidly furthermore according to Climate Report of UN (2007) the water resources came from melting glacier is decreasing continuously that concern one sixth of the population (Faragó, 2007). Until now glaciers have provided clean and good quality water but the demand for water is increasing in parallel with the rapidly expanding population.