Arsenic and heavy metals contamination by effluent dam rupture in a subtropical coastal lagoon

Dam accidents, often resulting from inadequate structural monitoring, pose significant environmental risks. In southern Brazil, the rupture of an evaporation-infiltration lagoon released over 500,000 m³ of treated domestic effluent into a coastal lagoon, raising concerns about potential contamination from nutrients and heavy metals. This study aimed to (1) assess the environment's self-purification capacity regarding dissolved nutrients, (2) …