8Guanabara Bay Beaches, Rio de Janeiro, Brazil

While Rio is known for iconic beaches like Copacabana, the beaches along Guanabara Bay are notorious for severe pollution.

Untreated sewage, industrial runoff, and floating garbage plague these shores, creating health hazards for locals and visitors alike. Efforts to clean the bay were thrust into the spotlight during the 2016 Olympics but have yet to yield significant improvements.

Main Issue: Untreated sewage and industrial pollution.

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