Photos via Weibo.
An industrial zone in the Pudong New Area is under investigation after a 300 metre stretch of a river in Hangtou turned bright blue.
Shanghai Daily reports:
Pictures posted by residents online showed blue sewage was being discharged from rain water pipes into the river. Some amount of oil slick was also found on the surface of the water.
“Sometimes the river turns white or black or even red,” a resident said yesterday. He said it has been like this for a year.
Though residents no longer drink from the river that was quite clear several years ago, some still use river water for cooking, he said.
“The river stinks and we can see many dead fish floating. Some part of the river has become rock solid,” a resident said. When it turns black, it stops flowing, pictures posted by the residents seem to suggest.
Images being circulated on Weibo show that the river turned a bright, wholly unnatural shade of blue. The Xinmin Evening News supplied this photo of what the river usually looks like:
Authorities are investigating what caused the colour change, local residents told reporters that they suspected factories at the nearby Dabai Bay Industrial Zone.