National Research Center for Integrated Natural Disaster Management (CIGIDEN), CONICYT/FONDAP/15110017, Avda, Vicuña Mackenna 4860, Santiago, Chile.
Departamento de Ingeniería Comercial, Universidad Técnica Federico Santa María, Avda. Santa María, 6400 Santiago, Chile.
Sci Total Environ. 2020 Jun 1;719:137487. doi: 10.1016/j.scitotenv.2020.137487. Epub 2020 Feb 24.
Water companies are responsible for supplying water to customers 24 h per day. However, due to extreme natural events and/or anthropogenic actions, water companies suffer from unplanned water supply interruptions, which directly impact customers and incur expenses by the companies. In this study, for the first time, we estimated the shadow price (or implicit cost) of unplanned water supply interruptions using stochastic frontier techniques for a sample of 21 Chilean water companies over the period of 2007-2017. The results indicate that, on average, the Chilean water company needed to spend an extra 2.547€ in operating expenditures to avoid 1 h of interruption. Average shadow price of unplanned water supply interruptions was higher for concessionary and full private companies than public ones. These findings demonstrate that the regulatory agency may need to promote effective policies and incentives to ensure and improve the continuity of the water supply. This is very relevant to the Chilean water industry, where there is an ongoing policy debate regarding the use of penalties and compensations as an incentive to avoid unplanned water supply interruptions.
自来水公司负责每天 24 小时向用户供水。然而，由于极端的自然事件和/或人为因素，自来水公司会遭受计划外的停水，这直接影响到用户，并给公司带来费用。在这项研究中，我们首次使用随机前沿技术，对 2007 年至 2017 年期间智利的 21 家自来水公司进行了样本估计，得出了计划外停水的影子价格（或隐含成本）。结果表明，智利的自来水公司平均需要额外花费 2.547 欧元的运营支出，才能避免停水 1 小时。计划外停水的平均影子价格在特许经营和完全私营公司中高于公有公司。这些发现表明，监管机构可能需要推动有效的政策和激励措施，以确保和改善供水的连续性。这对于智利的水行业非常重要，因为目前正在就使用罚款和补偿作为避免计划外停水的激励措施进行政策辩论。
