Estache, AntonioRossi, Martin A.2014-02-262014-02-262002-01World Bank Economic Reviewhttps://hdl.handle.net/10986/17192Several studies have compared the efficiency of publicly and privately owned water utilities and reached conflicting conclusions on the impact of ownership on efficiency. This article provides further evidence by estimating a stochastic cost frontier for a sample of Asian and Pacific regional water companies. The results show that efficiency is not significantly different in private companies than in public ones.en-USCC BY-NC-ND 3.0 IGOACCOUNTINGALLOCATIVE EFFICIENCYCAP REGULATIONCENTRAL BANKCONSUMERSCOST FUNCTIONSCOST OF WATERCUBIC METERSDRIVERSECONOMETRICSECONOMIC EFFICIENCYECONOMIC REGULATIONEFFICIENCY MEASUREMENTEFFICIENCY SCORESELECTRIC UTILITIESELECTRICITY DISTRIBUTIONELECTRICITY DISTRIBUTION SECTOREMPIRICAL ECONOMICSEMPIRICAL EVIDENCEEXOGENOUS VARIABLESFRONTIER ESTIMATIONFRONTIER MODELSFRONTIER PRODUCTIONFRONTIER PRODUCTION FUNCTION MODELSHEDONIC COSTHEDONIC COST APPROACHINEFFICIENCYLEAST COSTMAINTENANCE REQUIREMENTSMETER READINGMODEL SPECIFICATIONNUMBER OF CONNECTIONSOPERATIONAL COSTSOUTPUTSPRIVATE COMPANIESPRIVATE OPERATORSPRIVATE PROVIDERSPRIVATE SECTORPRIVATE SECTOR PARTICIPATIONPRIVATE WATER COMPANIESPRIVATIZATIONPRODUCTION FUNCTIONPRODUCTION FUNCTIONSPRODUCTIVITYPROPERTY RIGHTSPUBLIC COMPANIESQUALITY OF SERVICEREGULATORSRETURN REGULATIONRETURNS TO SCALEREVENUE CAPSSANITATIONSANITATION SECTORSURFACE SOURCESTECHNICAL EFFICIENCIESTECHNICAL EFFICIENCYTRANSLOGTRANSPORT REGULATORSUTILITY EFFICIENCYVARIABLE RETURNSWATER AVAILABILITYWATER SERVICESWATER SYSTEMSWATER UTILITIESWATER UTILITYYARDSTICK COMPETITIONJournal ArticleWorld Bank10.1596/17192