Aguas de Antofagasta (“ADASA”) operates a 30-year concession for the distribution of water in Chile’s Antofagasta Region which it acquired from the state owned Empresa Concesionaria de Servicios Sanitarios S.A. (“ECONSSA”) in 2003. ADASA’s operation consists of two businesses, a regulated water business supplying approximately 144,000 domestic customers and an unregulated business serving mines and other industrial users. It also provides sewage and treatment services in a number of cities in the Region.