Necessity of establishment of this UNESCO chair:

• More than 75% of Iran is in dry and semi-dry region and occurrence of consecutive droughts in recent years;
• Intense decrease in renewable national resources and water supply crisis in many parts of the country;
• Underground water resources decline to the least possible level as a result of irregular use;
• Demand for water and the possibility of national and international conflicts over water as a result of population growth, expansion of cities and industrial and agricultural development;
• Irregular and uncontrolled discharge of effluents to surface and underground waters and subsequent hygienic and environmental hazards;
• The need to develop, localize and expand water and wastewater reuse technologies that are applicable in Iran;
• The necessity to converge and integrate researches and national potentials available in Iran to reuse effluents and solve relevant crisis.