Juanacatlán Falls (Spanish: El Salto de Juanacatlán) is a waterfall on the Santiago River in the Mexican state of Jalisco, once known as the Niagara of Mexico. Decreased flow in the Santiago River has left the falls now virtually extinct. * v * t * e Fortunately, the federal government recently installed a $65 million treatment plant near El Salto. The plant removes some of the foam from the river, but not heavy metal wastes. Nevertheless, the arsenic level in the river has decreased. The government estimates that cleaning the Santiago river would cost $873 million.