Stock Photo - 08 April 2021, Bolivia, Oruro: View of Lake Uru Uru, shrunk by the drought, where acid mine water runs, according to the Center for Environment and Andean Peoples (CEPA). Cadmium, arsenic oxide and lead, among others, have been detected above the limit in the left sector of the lake, it said. The local government and civic organizations have regularly called for clean-up operations at the lake for years, ""but the acidic mine water is not being treated sufficiently,"" CEPA said. The concern is heightened by the fact that the lake has currently shrunk from 200 to 30 square kilometres due to the drought, laments Limbert Sanchez of the NGO. In addition, 15 hectares of the lake are polluted with an estimated 30,000 tons of waste. Photo: Radoslaw Czajkowski/dpa. - Oruro/Bolivia