In Lebanon, like in any other Mediterranean country, the use of wastewater is becoming practical in agriculture, but without any awareness from users about their side effects on human health and crop production. This non-point source of pollution constitutes a direct threat to the vulnerable underground water. Due to this situation, corrective attempts are now being taken into accounts, such as integrated water resource management and reuse strategy of treated wastewater. This paper aims to (i) describe the current problems deriving from the use of untreated wastewater in agriculture and their disposal into natural water bodies; (ii) review and evaluate the national policy for wastewater treatment and (iii) develop practical recommendations for reuse of treated wastewater in Lebanon. Impacts in terms of water savings, socio-economical and environmental benefits are also documented. Finally, the case of Baalbeck Water and Wastewater Environmental Assessment (BWWEA) will be discussed.