This book is intended to help regulators learn about the tools needed to measure efficiency. It is based on lecture notes from courses the World Bank Institute offers in English, French and Spanish throughout the developing world and has benefited from feedback received during those courses. It...

This paper provides a 'back-of-the-envelope' assessment of the efficiency effects of the reforms of the water sector in Argentina. Private operators are now key players in 15 of Argentina's provinces. While all have adopted incentive based regulatory regimes which require estimates of economic...