Does service quality matter in measuring performance of water utilities? Picazo-Tadeo, Andrés J. Sáez-Fernández, Francisco J. González Gómez, Francisco José Water utilities Quality Data envelopment analysis Quality is a dimension of water services that has been repeatedly omitted in the study of performance of water utilities. In this paper, we make use of Data Envelopment Analysis techniques (DEA) to compute both conventional quantity-based and quality-adjusted indicators of technical efficiency for a sample of Spanish water utilities. The key assumptions are that a lack of quality (bad quality) can be regarded as a bad output, and the existence of a trade-off between quantity and quality. Our main results indicate that quality matters in measuring technical performance, the difference between conventional and quality-adjusted evaluations representing the opportunity cost of maintaining quality. Averages and distribution functions significantly differ between both assessments of performance, although water utilities do not seem to rank differently. 2013-11-20T12:24:04Z 2013-11-20T12:24:04Z 2007-11-22 info:eu-repo/semantics/report Picazo-Tadeo, A.J.; Sáez-Fernández, F.J.; González-Gómez, F. Does service quality matter in measuring performance of water utilities?. Universidad de Granada, Facultad de Ciencias Económicas (2007). (FEG-WP; 4/07). [http://hdl.handle.net/10481/29174] http://hdl.handle.net/10481/29174 eng FEG-WP;4/07 info:eu-repo/semantics/openAccess Universidad de Granada. Facultad de Ciencias Económicas y Empresariales