date:Apr 12, 2013
by the dead fish so far. It remains the same level as usual, said Zhang, adding the authorities would continue to closely monitor water quality once a month in case there are any emergencies.
Songjiang water authority also ruled out the possibility of pollution after Friday and Saturday's water quality tests because the river is surrounded by old-fashioned residences and shops and no chemical plants. It said test results showed the levels of dissolved oxygen, ammonia nitrogen and the acid/alkal