ACI installed an ACI Hollow-Membrane and Heavy Metal Filter while training local engineers in the village of Llano de San Francisco, Querétaro, Mexico. The village is located in the mountainous Serra Gorda region nearest the town of Pinal de Amoles. Due to the high amounts of arsenic in their water from mining, the government has had to temporarily deliver clean water for the villagers to consume. This filter is one of several to be installed because of the continued high arsenic rates in this area. Together with the Universidad Autónoma de Querétaro, CONAGUA, and local government health officials, this was a very successfull trip.