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Setting performance standards for regulation of water services: Benchmarking Latin American utilities

机译：制定水务监管绩效标准：基准拉美公用事业

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The aim of this study is to estimate both stochastic and mathematical programming efficiency cost frontiers for the Latin American water sector, by means of econometric and Data Envelopment Analysis techniques, using the ADERASA database. ADERASA is the Latin American association for water regulators, which has made a systematic job of data collection, among other initiatives. This study fills a gap in the understanding of relative efficiency in the Latin American water sector, using a consistent database. First, we present a survey of the empirical literature related to cost and production frontiers in the water and sanitation sector. Second, once alternative specifications were chosen, models have been estimated and environmental variables included in an exploratory way. The coefficients have the expected signs and plausible values. Some consistency between methodologies is found. This paper yields two results. The better knowledge of the underlying cost (or production) model is a first step to using benchmarking as a regulatory tool. The policy implications are relatively straightforward. With benchmarking technology it is possible to coordinate the action of different regulators, each with their own asymmetry of information. The key is setting indicative standards which constitute the basis of further discussion.
机译：这项研究的目的是通过计量经济学和数据包络分析技术，使用ADERASA数据库，估计拉丁美洲水务部门的随机和数学规划效率成本前沿。 ADERASA是拉丁美洲的水调节器协会，除其他计划外，它已经系统地进行了数据收集工作。本研究使用一致的数据库填补了对拉丁美洲水务部门相对效率的理解的空白。首先，我们介绍与水和卫生部门成本和生产前沿有关的经验文献。其次，一旦选择了替代规格，就已经估算了模型并以探索性方式包括了环境变量。系数具有预期的符号和合理的值。方法之间存在一些一致性。本文得出两个结果。更好地了解基本成本（或生产）模型是使用基准测试作为监管工具的第一步。政策含义相对简单。使用基准技术可以协调不同监管机构的行动，每个监管机构都有自己的信息不对称性。关键是设定指示性标准，这些标准构成进一步讨论的基础。

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