Why Is Non-revenue Water So High in So Many Cities?

Abstract

The efficient management of water resources is a growing necessity. Paradoxically, although people are aware of this need, non-revenue water is excessive in many cities in the world. Non-revenue water data indicate that there is much room for improvement in water resource management in cities and they also suggest a lack of motivation to solve the problem in the short-term. This paper investigates the reasons why non-revenue water is so high in many cities around the world. The lack of incentives for management units, the defence of private interests due to corruption, the lack of awareness of citizens-users of the water service and the lack of political willingness are the main causes.