Evaluation of the quality of service of the water supply delivery in Lebanon

The global community had launched a global target related to access to sustainable safe drinking water sources and had pursued a global monitoring and reporting program on progress made on access to drinking water sources. The universal indicator considered by the global community for this purpose is the proportion of the population with (or without) access to improved drinking water sources. An improved drinking water source is defined as one that is likely to be protected from outside contamination. However, monitoring and reporting progress using this indicator does not reflect the quality of service delivery, in particular the quantity, quality and continuity of drinking water supply. This paper presents the evaluation of the quality of service of the water supply in Lebanon based on additional national-specific indicators that can properly inform the quality of water supply service delivery. A method of evaluation of quality of service index (QSI) is proposed based on a fuzzy inference system. The results of evaluation of the QSI for the four regional water supply authorities in Lebanon for the years 2000, 2005, 2010 and 2014 are then presented and discussed. Finally, the conclusion and further developments are presented.