Analyse économétrique des coûts des services d’eau potable et qualité des prestations offertes aux usagers

Issues on service quality are crucial for water utility management and regulation. Omitting these aspects can lead to possible bias in estimating the efficiency of services. We integrate in a Translog cost function variables proxying this multi-dimensionality. Empirical results show that taking into account the level of quality of the delivered services has a significant impact on the measure of the efficiency computed from a stochastic frontier. Moreover we highlight that efficiency depends on ownership (public vs. private) and level of quality. Institute of Forestry, Agricultural and Environmental Engineering (ENGREF) and the National Institute of Agronomic research (INRA). The mission of the LEF is to conceive, develop, and transfer methods and tools of economic analysis to improve the management of the goods, services and products of the forest and the forestry sector. The aim of this issue of the “Cahiers du LEF” is to present the results of the researchs of the forest economics laobratory between 2003 and 2007.