This paper evaluates the impact of the tightening in price cap by OFWAT and of other operational factors on the efficiency of water and sewerage companies in England and Wales using a mixture of data envelopment analysis and stochastic frontier analysis. Previous empirical results suggest that...

Why regulate -- Explaining regulation -- Regulatory strategies -- Who regulates? Institutions and structures -- What is 'good' regulation? -- The cost-benefit testing of regulation -- Enforcing regulation -- Setting standards -- Self-regulation -- Regulating risks -- Regulation in the European...