RT info:eu-repo/semantics/article T1 Understanding water energy nexus in drinking water provision: an eco-efficiency assessment of water companies A1 Molinos Senante, María A1 Maziotis, Alexandros A1 Sala Garrido, Ramón A1 Mocholi Arce, Manuel K1 Environmental efficiency K1 Eficiencia ambiental K1 Water utilities K1 Servicios de aguas K1 Eco-efficiency K1 Ecoeficiencia AB Understanding water-energy nexus in the provision of drinking water services is a challenge which has outstanding relevance in the current climatic emergency. Environmental efficiency and eco-efficiency assessment of water companies are two useful tools to address this challenge. In this study, we estimated hyperbolic and enhanced hyperbolic distance functions to compute the potential reduction in greenhouse gas (GHG) emissions and energy costs in the provision of drinking water. The empirical application focused on the English and Welsh water companies over 2011-2019. Average environmental efficiency and eco-efficiency scores were 0.920 and 0.962, respectively which indicates that water companies performed well but there is room for improvement. Moreover, due to the economies of scale, the cost of reducing GHG emissions was higher for water and sewerage companies than for water only companies. The results and conclusions of this study allow better understanding of the relationship between the provision of drinking water, energy costs and GHG emissions. PB Elsevier SN 0043-1354 YR 2022 FD 2022 LK https://uvadoc.uva.es/handle/10324/55597 UL https://uvadoc.uva.es/handle/10324/55597 LA eng NO Water Research, Volume 225, 2022, 119133 NO Producción Científica DS UVaDOC RD 21-dic-2024