Black water bubbles up at Niagara Falls

An inky blob that grew for hours over the weekend, and caught business owners and tourists off guard, is legal discharge from a local wastewater treatment plant, officials said.
0:45 | 07/31/17

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Transcript for Black water bubbles up at Niagara Falls
There's another mystery return to now one of the country's biggest tourist attractions. People visiting Niagara Falls say they were shocked. When V. Saw this smelly black water bubbling up near the falls the thinking blob you see it there are growing for hours over the weekend. Catching business owners even city officials off guard well. It turns out. That disk colored water out was legal discharge from the local waste water treatment plant. The sewage discharge apparently is done periodically during the year but here's a suggestion maybe they don't do it during the height of the tourist. So that people don't have to zuganov to sell its yeah right now I don't I don't wanna see that but anyway maybe they'll make a change to avoid this that would injure her this happy Monday.

This transcript has been automatically generated and may not be 100% accurate.

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