##article.highlights##
- Willingness to pay for improved sanitation services in Puno, Peru was estimated.
- Estimation was made through a choice experiment with multinomial and mixed logit models.
- An aggregate marginal willingness to pay of 9.95 PEN (3.32 USD) per month was estimated.
- Wastewater treatment is more valued than water and sewage services.
- Mixed logit-dummy codes model presented greater theoretical consistency of the results.
Abstract
Introduction: The management of basic sanitation services in Peru is considered a high priority public policy.
Objective: To estimate the economic benefits of an improvement in the provision of basic sanitation services (water, sewage and wastewater treatment) in Puno, Peru.
Materials and methods: The economic benefits were estimated from data obtained in a survey of 392 heads of family. The econometric estimates were made through a choice experiment with multinomial logit and mixed logit models.
Results and discussion: An aggregate marginal willingness to pay of 9.95 PEN (3.32 USD) per month per dwelling was estimated; if the total number of favored households is considered, this amount represents a measure of economic benefit. The wastewater treatment attribute is more valued than the water and sewage provision attributes. With respect to the models used, the mixed logit-dummy codes model presented greater theoretical consistency of the results.
Conclusion: The choice of options for improving basic sanitation services is strongly conditioned by the educational level and monthly income of the users. Any policy aimed at improving basic sanitation services in the city of Puno should focus on solving the issue of wastewater treatment.
References
Alpizar, F., Carlsson, F., & Martinsson, P. (2001). Using choice experiments for non-market valuation. Retrieved from http://www.eepsea.org/pub/sp/10301141930choiceexperiments.pdf
Ben-Akiva, M., & Lerman, S. (1985). Discrete choice analysis: theory and application to travel demand. Cambridge, MA, USA: MIT Press.
Bennett, J., & Adamowicz, V. (2001). Some fundamentals of environmental choice modelling. In J. Bennett & R. Blamey (Eds.), The choice modelling approach to environmental valuation (pp. 37–69). Cheltenham, UK & Northampon, MA, USA: Edward Elgar Publishing.
Birol, E., & Das, S. (2010). Estimating the value of improved wastewater treatment: the case of River Ganga, India. Journal of Environmental Management, 91(11), 2163–2171. doi: https://doi.org/10.1016/j.jenvman.2010.05.008
Birol, E., Karousakis, K., & Koundouri, P. (2006). Using a choice experiment to account for preference heterogeneity in wetland attributes: The case of Cheimaditida Wetland in Greece. Ecological Economics, 60(1), 145–156. doi: https://doi.org/10.1016/j.ecolecon.2006.06.002
Blamey, R., Gordon, J., & Chapman, R. (1999). Choice modelling: assessing the environmental values of water supply options. The Australian Journal of Agricultural and Resource Economics, 43(3), 337–357. Retrieved from http://ageconsearch.umn.edu/bitstream/117163/2/1467-8489.00083.pdf
Carlsson, F., Frykblom, P., & Liljenstolpe, C. (2003). Valuing wetland attributes: an application of choice experiments. Ecological Economics, 47(1), 95–103. doi: https://doi.org/10.1016/j.ecolecon.2002.09.003
Econometric Software, Inc. (2007). NLOGIT versión 4. USA: Author.
Greene, W. H. (2003). Econometric analysis (5th ed.). USA: Prentice Hall.
Hanley, N., Wright, R., & Álvarez-Farizo, B. (2006). Estimating the economic value of improvements in river ecology using choice experiments: an application to the water framework directive. Journal of Environmental Management, 78(2), 183–193. doi: https://doi.org/10.1016/j.jenvman.2005.05.001
Holmes, T., & Adamowicz, W. (2003). Atribute-based methods. In P. A. Champ, K. J. Boyle, & T. C. Brown (Eds.), A primer nonmarket valuation (pp. 171–219). Netherlands: Springer. doi: https://doi.org/10.1007/978-94-007-0826-6
Hensher, D., Rose, J., & Greene, W. (2005). Applied choice analysis: A primer. USA: Cambridge University Press.
IBM SPSS Statistics. (2014). Statistical Package for Social Sciences: SPSS versión 22. USA: Author.
Justes, A., Barberán, R., & Farizo, B. (2014). Economic valuation of domestic water uses. Science of the Total Environment, 472, 712–718. doi: https://doi.org/10.1016/j.scitotenv.2013.11.113
Louviere, J., Hensher, D., & Swait, J. (2000). Stated choice methods: analysis and application. USA: Cambridge University Press.
Lucich, I., & Gonzales, K. (2015). Valoración económica de la calidad y confiabilidad de los servicios de agua potable en Tarapoto a través de experimentos de elección. Perú: USAID-IRG-CSF. Retrieved from https://www.conservation-strategy.org/es/publication/valoraci%C3%B3n-econ%C3%B3mica-de-la-calidad-y-confiabilidad-de-los-servicios-de-agua-potable-en-t#.Wqy9hech2Uk
McFadden, D., & Train, K. (2000). Mixed MNL models for discrete response. Journal of Applied Econometrics, 15, 447–470. Retrieved from http://pages.stern.nyu.edu/~wgreene/DiscreteChoice/Readings/McFadden-Train.pdf
McFadden, D. (1974). Conditional logit analysis of qualitative choice behaviour. In P. Zarembka (Ed.), Frontiers in econometrics (pp. 105–142). New York, USA: Academic Press. Retrieved from https://eml.berkeley.edu/reprints/mcfadden/zarembka.pdf
Tarfasa, S., & Brouwer, R. (2013). Estimation of the public benefits of urban water supply improvements in Ethiopia: A choice experiment. Journal of Applied Economics, 45(9), 1099–1108. doi: https://doi.org/10.1080/00036846.2011.613793
Train, K. (2009). Discrete choice methods with simulation (2nd ed.). USA: Cambridge University Press.
Tudela, J. W. (2010). Experimentos de elección en la priorización de políticas de gestión en Áreas Naturales Protegidas. Revista Desarrollo y Sociedad, 66, 183–217. Retrieved from http://economia.uniandes.edu.co/revistadys/Articulo66_6.pdf
Tudela-Mamani, J. W. (2017). Willingness to pay for improvements in wastewater treatment: application of the contingent valuation method in Puno, Peru. Revista Chapingo Serie Ciencias Forestales y del Ambiente, 23(3), 341–352. doi: https://doi.org/10.5154/r.rchscfa.2016.11.059
Uribe, E., Mendieta, J. C., Jaime, H., & Carriazo, F. (2003). Introducción a la valoración ambiental y estudios de caso. Colombia: Universidad de los Andes-Ediciones Uniandes.
Villota, C. L. (2009). Valoración económica del humedal de Lenga mediante experimentos de elección. Panamorama Socioeconómico, 27(38), 32–43, Retrieved from http://www.redalyc.org/articulo.oa?id=39912023004
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2018 Revista Chapingo Serie Ciencias Forestales y del Ambiente