The lagoon systems have a varied biodiversity that harbors thousands of species of flora and fauna, which are harmed by anthropogenic activities; therefore, the present research aimed to estimate the Willingness to Pay (WTP) for the conservation of ecosystem services damaged by mining in the Pías Lagoon, Pataz Province, 2022; For this purpose, a questionnaire consisting of 22 questions was applied, divided into general data, socioeconomic factor, level of information and willingness to pay; these were filtered in the SPSS statistical software, to obtain a suitable degree of reliability through the Cronbach's Alpha coefficient; for the estimation of WTP, the STATA 16 statistical software was applied. 0, obtaining an individual value of S/. 9.00; monthly of S/. 5,592.61; and annual of S/. 67,111.37. It was identified that the majority of the population does not know about the ES provided by the lagoon. In addition, the length of residence, educational level, employment status, income, housing material and type of lighting, and water supply are socioeconomic factors that influence WTP. Finally, it was identified that in the lagoon there are Provision, Regulation, Cultural and Support Ecosystem Services.