José M. Brotons¹, Gerardo Ruiz Sevilla², Ruben Chavez³, ¹Miguel Hernández University, Spain, ²Universidad Nacional Autónoma de México, México, ³Universidad Michoacana de San Nicolás de Hidalgo, México

The Tancítaro peak is located in the State of Michoacán in Mexico. The current situation of unsustainable consumption of water resources can lead the region to a critical situation if adequate measures are not taken. An improvement in water management involving paying for the use of these resources could improve the situation. This work aims to propose a model allowing obtaining an equilibrium price of the use of water in the Tancítaro area. For this, experts will be consulted among the users of the water and experts among those who currently the right to use it, that is, inhabitant of the reserve area. The use of the Fuzzy logic will allow them to express their willingness to pay and collect data, not in a dichotomous way, but by grading their opinions. The use of Ordered Weighted Average (OWA) will allow the aggregation of these opinions bearing in mind different degrees of optimism or pessimism. The results obtained show an equilibrium price of $ 0.49 m-3 . It should be noted that these are preliminary results and the main objective of the work is the presentation of a methodological proposal.

OWA, Water demand function, Water supply function, Willingness to accept, Willingness to pay.