ABSTRACT
The presence of As in water resources used for human consumption has been identified as a growing problem in Latin America (LA), causing high impact in both developed areas and the poorest regions (Bundschuh et al., 2010a; 2012; Litter et al., 2010a; 2014). In the last decade, several countries in LA have adopted the World Health Organization (WHO) allowable limit of As in drinking water of 10 µg L−1 (WHO, 2011), with the exception of some countries such as Mexico, where the recommended value is still 25 µg L−1. In Argentina, for the regions with soils with high As content, a period of five years was set to reach the 10 µg L−1 limit (Código Alimentario Argentino, 2007).
