Argentine River Turns Blood Red, Raising Pollution Concerns

Residents near Buenos Aires report a foul smell and suspect industrial chemical dumping as officials investigate the discoloration of the Sarandí Stream.

The Sarandí Stream in Avellaneda, a suburb of Buenos Aires, turned bright red on February 6, alarming residents and officials.
Locals reported a strong, nauseating smell and have long complained about industrial pollution in the area, which houses tanneries and other factories.
Authorities suspect the presence of aniline, a toxic chemical used in dyes, but are also investigating the possibility of organic coloring as the cause of the discoloration.
Residents say the stream has changed colors multiple times in the past, including shades of blue, green, and yellow, often accompanied by oily residues and foul odors.
The Buenos Aires Environment Ministry has collected water samples for analysis, with results pending as investigations continue into potential industrial contamination.