Editorial: Efficient water systems management

Water scarcity and climate change are both considered today as the main causes of water-related problems. [...]it is estimated that 20-40% of Europe's available drinking water is being wasted through real (physical) losses occurring along the supply systems. The paper presents a complete multicriteria analysis of the system performance in several fields of interest (energy, environment, quality of service, operation, economy and financial resources). A Performance Indicators panel, together with the water and energy balances, provided information about the system or subsystem efficiencies in terms of water leakage, reduction, energy consumption, environmental impact, quality of service, and operational, economic and financial aspects. [...]this paper utilizes optimization methods to achieve the desired segmentation conditions in terms of: (a) operating pressure reduction; and (b) residual chlorine concentration reduction, thus preventing the growth of disinfection byproducts.