Technical efficiency in Chile's water and sanitation providers

Ferro, Gustavo; Mercadier, Augusto C.

doi:10.1016/j.jup.2016.04.016

Cited by 60 publications

(31 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Pinto et al, 2016; Li and Phillips, 2017), this study considered two outputs: i) the volume of water distributed, expressed in thousands of cubic meters of water produced annually, and ii) the number of customers with access to wastewater treatment services. Three inputs were assessed: i) the main length, defined as the sum of the water and sewerage networks (in km), which was used as a proxy for capital costs (Ananda, 2014, Ferro andMercadier, 2016); ii)…”

Section: Sample and Data Descriptionmentioning

confidence: 99%

Productivity change and its drivers for the Chilean water companies: A comparison of full private and concessionary companies

Molinos-Senante

Porcher

Maziotis

2018

Journal of Cleaner Production

View full text Add to dashboard Cite

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Productivity change and its drivers for the Chilean water companies: A comparison of full private and concessionary companies.

show abstract

Section: Sample and Data Descriptionmentioning

confidence: 99%

Productivity change and its drivers for the Chilean water companies: A comparison of full private and concessionary companies

Molinos-Senante

Porcher

Maziotis

2018

Journal of Cleaner Production

View full text Add to dashboard Cite

show abstract

“…SFA is a parametric efficiency analysis approach that assumes a Cobb-Douglas, log-linear, or translog functional form for the underlying technology [18,19]. Following past studies ( [20][21][22] and others) a Cobb-Douglas functional form is employed, as the study sample is small and this method does not need many degrees of freedom compared to the translog functional form. The estimated cost frontier takes the following form:…”

Section: Methodsmentioning

confidence: 99%

Are Frontier Efficiency Methods Adequate to Compare the Efficiency of Water Utilities for Regulatory Purposes?

Estruch-Juan

Rochera

Molinos-Senante

et al. 2020

Water

View full text Add to dashboard Cite

Frontier efficiency methods have been recurrently used in the water sector to assess the performance of water utilities. These methods are also used for yardstick regulation, with greater efficiency being sought by creating competition between the utilities, which can have an impact on decision-making processes, such as tariff setting. This study analyzes the adequacy and limitations of these methods for regulatory purposes, particularly how they deal with data uncertainty and their capacity to manage large number of variables. In order to achieve this, two representative methods—a nonparametric technique (data envelopment analysis) and an econometric one (stochastic frontier analysis)—are applied to an audited sample of 194 water utilities. Results will show that the results from the methods may not be considered conclusive in the water sector and their application should be carried out with considerable reservations.

show abstract

“…The range of the ELLs expressed as leakage per network length per day (m 3/ km/day) was wide (0. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], which means that no threshold value for the cost-benefit of leakage reduction measures could be identified in terms of this leakage indicator. In terms of leakage percentage, the ELLs were 10%-59%.…”

Section: Context-specific Findings: Mostly Low Water Loss Levels In Fmentioning

confidence: 99%

“…In Portugal, Martins et al [9] found some indication that the unit cost of water (including all costs of supplying water) could be lowered by reducing leakage, but the study did not indicate any specific methods for leakage control. In Chile, the results suggested that costs could not be saved by active leakage management [10].…”

Section: Introductionmentioning

confidence: 99%

“…All of the leakage mitigation methods mentioned above consume some resources, which is why they need to be weighed against their benefits. Some leakage appraisal methods presented in the literature include the sustainable economic level of leakage (SELL) framework [6], cost-benefit analysis case studies [7,8], and economic inefficiency measures [9][10][11]. Malm et al [8] presented a comparison of the costs and benefits of four different leakage control alternatives against a predetermined leakage target.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cost–Benefit Analysis of Leakage Reduction Methods in Water Supply Networks

Ahopelto

Vahala

2020

Water

View full text Add to dashboard Cite

Reducing water loss from water supply systems is often regarded as one of the most important ways to improve the resource efficiency of water supply services. However, the costs and impacts of water loss reduction efforts need to be weighed against the benefits to define the optimal water loss target level. To this end, we conducted a cost–benefit analysis of three investment-based leakage reduction methods: district metering, pressure reduction, and pipe renovations. Furthermore, we conducted uncertainty and sensitivity analysis to determine the most relevant data for leakage analysis and policymaking on a national level. The results indicate that water loss management might not be directly cost-beneficial to utilities operating with moderate leakage levels. Neither leakage percentage nor the Infrastructure Leakage Index (ILI) were suitable for leakage target setting for the Finnish utilities. The costs of investing in district metering or renovations were the most influential factors in the sensitivity analysis, but the results showed that the estimated values were sufficiently accurate for assessing leakage policies.

show abstract

Technical efficiency in Chile's water and sanitation providers

Cited by 60 publications

References 21 publications

Productivity change and its drivers for the Chilean water companies: A comparison of full private and concessionary companies

Productivity change and its drivers for the Chilean water companies: A comparison of full private and concessionary companies

Are Frontier Efficiency Methods Adequate to Compare the Efficiency of Water Utilities for Regulatory Purposes?

Cost–Benefit Analysis of Leakage Reduction Methods in Water Supply Networks

Contact Info

Product

Resources

About