Capturing the environment, a metafrontier approach to the drinking water sector. CES Discussion Paper Series DPS 08.04

K. De Witte*, R Marques

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

57 Citations (Web of Science)


Environmental factors add complexity to the comparison between specific activities or entire entities. Decision making units with an inferior performance are tempted to invoke that their organization is ``different'' from the others in the data set. By reinterpreting and extending the metafrontier literature, we propose an all-embracing concept to fully capture the operational environment. We suggest the ``Group Specific Technical Efficiency'' as a new measure to assess the overall efficiency of a utility while allowing for environmental differences. A real-world example of drinking water utilities from five different countries
illustrates the concept.
Original languageEnglish
Pages (from-to)257-271
JournalInternational Transactions in Operational Research
Issue number2
Publication statusPublished - 1 Jan 2009

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