##article.highlights##
- Willingness to pay (WTP) for improvements in the wastewater treatment system in Puno, Peru was estimated.
- WTP was estimated using the contingent valuation method with referendum and double-bounded models.
- A mean WTP of 4.38 PEN (1.46 USD) per household was estimated.
- The residents most affected by wastewater pollution have higher WTP.
- The double-bounded model is the most suitable to estimate WTP.
Abstract
Introduction: The collapse of the "El Espinar" Wastewater Treatment Plant (WWTP) in Puno, Peru, has resulted in much of the wastewater being discharged into Lake Titicaca’s Inner Bay, generating pollution and loss of well-being in the population.
Objective: To estimate the willingness to pay (WTP) for improvements in the wastewater treatment system in Puno, Peru.
Materials and methods: WTP was estimated through data obtained in a survey of 393 heads-of-household. The contingent valuation method’s linear and logarithmic models, with referendum and double-bounded questions, were used.
Results and discussion: A mean WTP of 4.38 PEN (1.46 USD) per household was estimated. WTP was affected by socioeconomic variables related to the household budget, educational level and geographical location of the home. Residents of the southern zone, the main area affected by the pollution caused by the wastewater discharge, have higher WTP than those living in the city’s central and northern areas.
Conclusion: Despite the belief in the low-payment culture, users are willing to pay if the benefits are obvious. With respect to the models used, the double-bounded model had greater theoretical consistency of results.
References
Arias, J., Suarez, A., & Taborda, J. (2011). Disponibilidad a pagar por los servicios de acueducto y alcantarillado en los barrios el Cofre y San Isidro del corregimiento de Puerto Caldas; Pereira. Scientia et Technica, 16(49), Retrieved from http://www.redalyc.org/articulo.oa?id=84922625046
Awunyo, D., Ishak, S., & Seidu, G. (2013). Urban households’ willingness to pay for improved solid waste disposal services in Kumasi metropolis, Ghana. Hindawi Publishing Corporation. Urban Studies Research, Article ID 659425. doi: https://doi.org/10.1155/2013/659425
Bateman, I., Langford, H., Jones, A., & Kerr, G. (2001). Bound and path effects in double and triple bounded dichotomous choice contingent valuation. Resource and Energy Economics, 23, 191-213. doi: https://doi.org/10.1016/S0928-7655(00)00044-0
Bishop, R. C., & Heberlein, T. A. (1979). Measuring values of extramarket goods: Are indirect measures biased? American Journal of Agricultural Economics, 65(15), 926-930. doi: https://doi.org/10.2307/3180348
Bogale, A., & Urgessa, B. (2012). Households’ willingness to pay for improved rural water service provision: Application of contingent valuation method in eastern Ethiopia. Journal of Human Ecology, 38(2), 145-154. Retrieved from https://www.researchgate.net/publication/267784459
Calia, P., & Strazzera, E. (2000). Bias and efficiency of single versus double bounded model for contingent valuation: A Monte Carlo analysis. Applied Economics, 32(10), 1329-1336. doi: https://doi.org/10.1080/000368400404489
Del Saz-Salazar, S., Hernández-Sancho, F., & Sala-Garrido, R. (2009). The social benefits of restoring water quality in the context of the Water Framework Directive: A comparison of willingness to pay and willingness to accept. Science of the Total Environment, 407, 4574-4583. doi: https://doi.org/10.1016/j.scitotenv.2009.05.010
Dupont, D. (2013). Water use restrictions or waste water recycling? A Canadian willingness to pay study for reclaimed wastewater. Water Resources and Economics, 1, 61-74. doi: https://doi.org/10.1016/j.wre.2013.03.002
Econometric Software, Inc. (2007). NLOGIT versión 4.0. USA: Author.
Habb, T., & Mcconell, K. (2002). Valuing environmental and natural resources: The econometric of non-market valuation. Cheltenham, UK & Northampon, USA: Edward Elgar.
Hanemann, M., Loomis, J., & Kanninen, B. (1991). Statistical efficiency of double-bounded dichotomous choice contingent valuation. American Journal of Agricultural Economics, 73(4), 1255-1263. Retrieved from https://www.researchgate.net/publication/240263269
Hanemann, W. (1984). Welfare evaluations in contingent valuation experiments with discrete responses. American Journal of Agricultural Economics, 66(3), 332-341. Retrieved from http://www.jstor.org/stable/1240800
Instituto Nacional de Estadística e Informática (INEI). (2009). Perú: Estimaciones y proyecciones de población por sexo, según departamento, provincia y distrito, 2000-2015. Retrieved from http://proyectos.inei.gob.pe/web/biblioineipub/bancopub/Est/Lib0842/libro.pdf
Lauria, D. T., Whittington, D., Choe, K., Turingan, C., & Abiad, V. (1999). Household demand for improved sanitation services: A case study of Calamba, the Philippines. In I. J. Bateman & K. G. Willis (Eds.), Valuing environmental preferences: Theory and practice of the contingent valuation method in the US, EU, and developing countries (pp. 540-581). UK: Oxford University Press.
Municipalidad Provincial de Puno (MPP). (2008). Plan de desarrollo provincial concertado al 2021. Retrieved from http://www.munipuno.gob.pe/descargas/transparencia/Plan%20de%20Desarrollo%20Concertado/PDC_MPP_anterior.pdf
Perez-Pineda, F., & Quintanilla-Armijo, C. (2013). Estimating willingness-to-pay and financial feasibility in small water projects in El Salvador. Journal of Business Research, 66, 1750-1758. doi: https://doi.org/10.1016/j.jbusres.2013.01.014
Tudela, J. W. (2008). Estimación de la disponibilidad a pagar de los habitantes de la ciudad de Puno por el tratamiento de aguas servidas. Economía y Sociedad, 69, 73-83. Retrieved from https://www.researchgate.net/publication/308203921
Valdivia, R., García, E., López, M., Hernández, J., & Rojano, A. (2011). Valoración económica por la rehabilitación del Río Axtla, S. L. P. Revista Chapingo Serie Ciencias Forestales y del Ambiente, 17(3), 333-342. doi: https://doi.org/10.5154/r.rchscfa.2010.07.045
Whittington, D., Smith, V. K., Okorafor, A., Okore, A., Liu, J. L., & McPhail, A. (1992). Giving respondents time to think in contingent valuation studies: A developing country application. Journal of Environmental Economics and Management, 22, 205-225. doi: https://doi.org/10.1016/0095-0696(92)90029-V
![Creative Commons License](http://i.creativecommons.org/l/by-nc/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2017 Revista Chapingo Serie Ciencias Forestales y del Ambiente