Integrated urban water resources management: A challenge into the 21st century

The concept of integrated water resources, management (IWRM) was introduced in the realm of the International Water Resources Association some 30 years ago. In the context of the urban environment, IWRM requires that management should encompass not only other sectors such as transportation, housing, etc. but also the concurrence of professionals of different disciplines. This paper presents the challenges faced by two metropolitan regions, one in the developed world and one in the developing world. In both cases it is shown that demand management can play a definite role in achieving integrated water management. The complexity of managing the mega-cities of the 21st century will require the creation of a new professional who will be able to coordinate multidisciplinary team work in the water sector.