Chilean regions by access to sewage treatment (2011)

Chilean regions by population living in homes with access to house sewage treatment in 2011, by type.

Reference 1: Sanitary sewer, Septic tank, Dry well, Other and None.

Reference 2: Arica and Parinacota, Tarapacá, Antofagasta, Atacama, Coquimbo, Valparaíso, Santiago, O'Higgins, Maule, Biobío, Araucanía, Los Ríos, Los Lagos, Aisén, Magallanes and Chile.

Source: http://en.wikipedia.org/wiki/Ranked_list_of_Chilean_regions#By_regional_GDP_.28PPP.29