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首页> 外文期刊>Journal of Infrastructure Systems >Water Utility Efficiency Assessment Using a Data Envelopment Analysis Procedure
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Water Utility Efficiency Assessment Using a Data Envelopment Analysis Procedure

机译：使用数据包络分析程序进行水务效率评估

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摘要

Data envelopment analysis is used to compare the relative efficiencies of potable water utilities using the United States Environmental Protection Agency community water system survey data. Three ownership types (private for profit, private not for profit, and public), and two types of supply sources (ground and surface) are compared. Statistically significant results indicating efficiency advantages of certain utility types are found, and clear trends towards certain utility types are identified. The findings indicate that public utilities are most efficient overall, followed by private not-for-profit utilities, with private for-profit utilities being least efficient. Except for a few cases of very large supply demands, utilities employing groundwater sources were generally more efficient than those using surface water sources. A brief investigation into the marginal return on information obtained from using additional measurement variables to measure utility performance is presented. Additional ranking information can be obtained by using more discrete measurement variables, but with diminishing marginal returns. This presentation of public water utility efficiency evaluation should prove useful as a tool for guiding ownership policies and water source development strategies and demonstrates the utility of publicly available data sets.
机译：数据包络分析用于使用美国环境保护署社区水系统调查数据来比较饮用水公用事业的相对效率。比较了三种所有权类型（私有用于利润，私有非用于利润和公共）和两种供应来源（地面和地面）。找到了统计上显着的结果，这些结果表明了某些公用事业类型的效率优势，并且确定了向某些公用事业类型发展的明确趋势。调查结果表明，公共事业总体上效率最高，其次是私人非营利性事业，而私人营利性事业效率最低。除了少数几个需求量很大的情况外，使用地下水源的公用事业通常比使用地表水源的公用事业更有效率。简要调查了通过使用其他测量变量来测量公用事业绩效而获得的信息的边际收益。可以通过使用更多离散的测量变量来获得其他排名信息，但边际收益却会减少。这种对公共用水效率评估的介绍应被证明是指导所有权政策和水源开发战略的有用工具，并证明了可公开获得的数据集的实用性。

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