The main objective of this study is to estimate the Economic Level of Leakage in Tangier and Kenitra, two prominent cities in Morocco. This aims to enhance the efficiency of their water distribution systems by determining the optimal leakage level. Our approach helps water companies identify the point where the costs of further leakage reduction outweigh the benefits of water conservation. The findings demonstrate commendable efforts by Tangier and Kenitra in managing their water distribution systems. Our study reveals that Kenitra’s economic leakage level is 12.7 m3/connection/year, while Tangier’s stands notably higher at 70 m3/connection/year.