abstract
Efficiency assessment and benchmarking are crucial for managing any organization. However, especially from a regulatory perspective, such efficiency assessment and benchmarking must be unbiased from context-specific issues and should provide an absolute rating, rather than a relative one. The current work reviews the approaches used for performance assessment and benchmarking waste collection services, revealing that the majority are biased and are not absolute, and proposes two alternative context-unbiased and absolute performance indicators, the collection capacity use (CCU) and the segregated waste collection efficiency (SWE). The proposed indicators were calculated for 246 utilities operating in Portugal. The utilities were then ranked accordingly, and their position was compared with the position attained using the equivalent performance indicators in the system currently in use by the Portuguese service regulator. The results reveal ranking differences of over 50 positions and illustrate how misleading the results from context-biased and relative metrics can be.
keywords
MUNICIPAL SOLID-WASTE; SORTED HOUSEHOLD WASTE; PERFORMANCE INDICATORS; COST EFFICIENCY; MANAGEMENT-SYSTEMS; SERVICES; DRIVERS
subject category
Engineering; Environmental Sciences & Ecology
authors
Sousa, V; Dias-Ferreira, C; Fernandez-Brana, A; Moireles, I
our authors
Célia Maria Dias Ferreira
Post-Doc FellowshipGroups
acknowledgements
The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: C Dias-Ferreira was funded through FCT 'Fundacao para a Ciencia e para a Tecnologia' by POCH (Programa Operacional Capital Humano) within ESF (European Social Fund) and by national funds from MCTES (SFRH/BPD/100717/2014). V Sousa acknowledges the support from FCT (SFRH/BSAB/113784/2015) and CERIS. The authors also gratefully acknowledge project Life PAYT - 'Tool to Reduce Waste in South Europe' (LIFE15 ENV/PT/000609) for its support.