At one time the town of San Juan Cosala was a thriving fishing village and one 

 able to support the majority of its residents. Over the years Lake Chapala has been polluted by the agricultural activity surrounding the entire lake. In addition, Guadalajara has been using the lake as a major source of water causing the lake level to drop so precipitously that fish could no longer reproduce. The former fishing village has now been transformed into a population without work.