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Environment

Tokyo Bay sewage raises Olympian stink at 2020 swimming site

Heavy rains overwhelm outdated pipes and send untreated waste into sea

The swimming leg of the Paratriathlon World Cup at Odaiba Marine Park was canceled due to high levels of E. coli bacteria.    © Kyodo

TOKYO -- Is Tokyo Bay's water safe? The cancellation of a triathlon event in August has raised concerns about pollution at one of the venues for the 2020 Summer Olympics, and thrown the spotlight on problems with the city's sewage treatment system.

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