The length of the river is open to discussion. Depending on the source consulted, this ranges from 248km to 556km. Rainfall in the basin is about 644mm annually. The average temperature is around 16°C. The climate is semi-arid to arid in Lebanon, with annual rainfall of about 400mm

The annual amount of water used in Syria is about 15BCM. This comes from the Euphrates (50 per cent) and the Asi River basins (20 per cent). Of the water usage from the Asi River, 2,230MCM are used for irrigation, 320MCM for domestic purposes and 270MCM for industrial purposes. The total amount of water withdrawn from the Asi River is 2,730MCM

In all three riparian countries, the river is used mainly for irrigation, domestic water supply and hydropower. The Asi River is diverted to the Homs-Hama water channels and Ghab-Roudji irrigation systems to meet the needs of Lebanon and Syria. The water is also stored in the Zeita Dam for domestic and irrigation purposes and energy production.

Turkey-Syria Relations were affected throughout the Cold War era and into the 1990s. The water issue became a foreign relations matter once again when both countries began using the waters of the Euphrates-Tigris basin in the 1960s and building irrigation and energy-related projects.

The foundation stone of the dam was laid on 6 February 2011. On completion, the dam is expected to be 22.50 m high, with a capacity of 110MCM. Of that, 40MCM will be used for flood prevention and the rest for energy production, and irrigation (around 9,000 hectares of agricultural land).

The rate of wastewater treatment is still low in many MENA countries, and reuse faces many challenges like; preference for freshwater over wastewater, inadequate information on the status of reuse and disposal of wastewater, and incomplete economic analysis of the wastewater treatment and reuse options

There are many benefits of wastewater reuse. The environmental benefits include reducing the pollution of water resources and sensitive receiving bodies, and controlling saline water intrusion through groundwater recharge. Wastewater reuse also presents economic value by providing significant additional amounts of water and contributing to the conservation of freshwater resources. Additionally, it provides nutrient-rich water for irrigation and reduces the need for chemical fertilizers.

Wastewater treatment is the process of removing contaminants from water through engineered physical, chemical and biological processes to produce an effluent that can be safely reused or discharged to the environment

To mitigate water scarcity, the countries of the MENA region have substantially increased their investment and participation in desalination. There is no single model for desalination, nor can one model be applied in all the countries.

Gaza’s water crisis affects every one of the territory’s 1.76 million inhabitants. The heavy pollution of water resources in the Gaza Strip has a severe impact on public health; children are particularly at risk from water-related diseases. In addition, the local economy, agricultural production in particular, and the environment suffer the consequences of the water scarcity and pollution.