The impact of regulation of efforts to minimize costs has been widely discussed, but remains
difficult to measure. The sophisticated regulation of water utilities in Wisconsin allows us to …

In this study we analyze the evolution of operating cost inefficiency for the English and
Welsh water industry over the period 1995-2001 by estimating an heteroskedastic stochastic …

Efficiency indicators can be useful to regulators assessing the efficiency of an operation and
the wedge between tariff and minimum costs. They allow regulators to control for factors over …

A stochastic frontier cost function is used to specify the cost of inefficiency of publicly and
privately owned urban water utilities in terms of their different ownership structures and firm …

This study estimates cost inefficiency and economies of scale of Slovenian water distribution
utilities over the 1997–2003 period by employing several different stochastic frontier …

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 …

This paper assesses cost efficiencies of Brazilian public and private companies of water
supply. To measure the efficiency, we used a stochastic frontier model derived from the …

Cross-country comparisons avoid the unsteady equilibrium in which regulators have to
balance between economies of scale and a sufficient number of remaining comparable …

The objective of this paper is to analyze the efficiency of the water sector in Latin American
countries. We try to find factors affecting efficiency rather than identifying which country or …

Cross-country comparisons avoid the unsteady equilibrium in which regulators have to
balance between economies of scale and a sufficient number of remaining comparable …