# Heavy metal contamination in South America > Developing situation record from CLSTR: https://clstr.news/situations/heavy-metal-contamination-in-south-america > Updated: 2026-10-28T22:58:20.000Z. Sources: 5. Developments: 2. Heavy metal contamination has emerged as a significant environmental and public health concern across several South American regions, involving soil, dust, and water sources. In Chile, researchers and authorities in the Antofagasta Region are addressing contamination in soil and schools. While some provisional measures in Calama have reportedly decreased particulate matter, critics note a lack of specific data regarding metal concentrations in classrooms. Experts have highlighted a critical need for national regulations to evaluate and remediate contaminated soils, as current efforts often rely on international standards. In Argentina, legal proceedings for 457 victims of lead contamination from the former Metal Huasi mine in Abra Pampa have faced a two-decade delay. The case has reportedly been stalled at the Jujuy Supreme Court since 2019. In Peru, the Puno region has seen the formation of a regional platform representing those affected by heavy metals in various basins. This group is demanding government action to address water contamination and shortages, noting that residents continue to consume water from rivers and wells containing heavy metals. ## Timeline ### 2026-10-28: Legal and social delays persist in heavy metal contamination cases Victims of heavy metal contamination in Argentina and Peru face ongoing struggles, with legal delays in Jujuy and organized demands for environmental action in Puno. 2 sources. https://clstr.news/cluster/legal-and-social-delays-persist-in-heavy-metal-contamination-cases ### 2026-10-23: Chilean researchers and authorities address soil and school metal contamination Researchers and environmental authorities in Chile's Antofagasta Region are addressing heavy metal contamination in soils and schools, amid calls for clearer national remediation standards. 2 sources. https://clstr.news/cluster/chilean-researchers-and-authorities-address-soil-and-school-metal-contamination --- Cite as: Heavy metal contamination in South America. CLSTR, https://clstr.news/situations/heavy-metal-contamination-in-south-america