Islamic University of Lebanon support water conservation off campus through on rain water in the main form as an alternative to the water received from the Ministry of Energy at a rate of 80% of use. Noting that the water of wells is not used except in days of scarcity, allowing the rest of the surrounding areas to benefit from the surplus water available.  

The efficiency of water use increases greatly by ensuring controlled withdrawal operations by the presence of valves at all exits on the network with constant maintenance of the pipes. The used water network and tanks have also been provided with an automatic control system (see next figure) to fill the tanks and monitor the daily intake movement. The use of rainwater after treatment as an alternative to using drinking water reduces the need for other resources and provides it to the rest of the surrounding areas.