Water supply is one of the most basic stages of water and wastewater studies. Due to limitations and a variety of water resources in an area, including;

• water resources such as rivers and dams
• Underground water resources such as aquifers, …
• Uncommon waters such as the reuse of wastewater, deep water, fossil water, water harvesting from air.

We should determine various alternatives in water supply according to the quality and quantity of available and required water. Then a technical, economical, and environmental comparison among them should be made so that an optimum alternative can be introduced. We will also analyze different methods of  collecting water from water resources in these studies.