Unpackaging demand for water service quality : evidence from conjoint surveys in Sri Lanka
AbstractIn the early 2000s, the Government of Sri Lanka considered engaging private sector operators to manage water and sewerage services in two separate service areas: one in the town of Negombo (north of Colombo), and one stretching along the coastal strip (south from Colombo) from the towns of Kalutara to Galle. Since then, the government has abandoned the idea of setting up a public-private partnership in these two areas. This paper is part of a series of investigations to determine how these pilot private sector transactions (forming part of the overall water sector reform strategy) could be designed in such a manner that they would benefit the poor. The authors describe the results of a conjoint survey evaluating the factors that drive customer demand for alternative water supply and sanitation services in Sri Lanka. They show how conjoint surveys can be used to unpackage household demand for attributes of urban services and improve the design of infrastructure policies. They present conjoint surveys as a tool for field experiments and a source of valuable empirical data. In the study of three coastal towns in southwestern Sri Lanka the conjoint survey allows the authors to compare household preferences for four water supply attributes-price, quantity, safety, and reliability. They examine subpopulations of different income levels to determine if demand is heterogeneous. The case study suggests that households care about service quality (not just price). In general, the authors find that households have diverse preferences in terms of quantity, safety, and service options, but not with regard to hours of supply. In particular, they find that the poor have lower ability to trade off income for services, a finding that has significant equity implications in terms of allocating scarce public services and achieving universal water access.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by The World Bank in its series Policy Research Working Paper Series with number 3817.
Date of creation: 01 Jan 2006
Date of revision:
Town Water Supply and Sanitation; Water and Industry; Economic Theory&Research; Water Use; Water Supply and Sanitation Governance and Institutions;
This paper has been announced in the following NEP Reports:
- NEP-ALL-2006-01-24 (All new papers)
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Anders Karlstrom, 2003. "A Simple Method of Incorporating Income Effects into Logit and Nested-Logit Models: Theory and Application," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 85(1), pages 248-253.
- David Hensher & Nina Shore & Kenneth Train, 2005. "Households’ Willingness to Pay for Water Service Attributes," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 32(4), pages 509-531, December.
- Glenn Harrison & John List, 2004.
Artefactual Field Experiments
00058, The Field Experiments Website.
- DeShazo, J. R. & Fermo, German, 2002. "Designing Choice Sets for Stated Preference Methods: The Effects of Complexity on Choice Consistency," Journal of Environmental Economics and Management, Elsevier, vol. 44(1), pages 123-143, July.
- Louviere,Jordan J. & Hensher,David A. & Swait,Joffre D. With contributions by-Name:Adamowicz,Wiktor, 2000. "Stated Choice Methods," Cambridge Books, Cambridge University Press, number 9780521788304, October.
- Antonio Estache & V. Foster & Q. Wodon, 2002. "Accounting for Poverty in Infrastructure Reform: Learning from Latin America's Experience," ULB Institutional Repository 2013/44108, ULB -- Universite Libre de Bruxelles.
- Daniel McFadden & Kenneth Train, 2000. "Mixed MNL models for discrete response," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 15(5), pages 447-470.
- David Revelt & Kenneth Train, 1998. "Mixed Logit With Repeated Choices: Households' Choices Of Appliance Efficiency Level," The Review of Economics and Statistics, MIT Press, vol. 80(4), pages 647-657, November.
- Poulos, Christine & Yang, Jui-Chen & Patil, Sumeet R. & Pattanayak, Subhrendu & Wood, Siri & Goodyear, Lorelei & Gonzalez, Juan Marcos, 2012. "Consumer preferences for household water treatment products in Andhra Pradesh, India," Social Science & Medicine, Elsevier, vol. 75(4), pages 738-746.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Roula I. Yazigi).
If references are entirely missing, you can add them using this form.