The spill happened at around 3 am today in Fuyang city when a tanker-truck carrying tetrachloroethane overturned on a road and some of its chemicals flowed into the Fuyang section of the Fuchun river.
The water utility companies in the city have been asked to stop drawing water from the river and banned fishing on the affected section, government sources said.
Citizens have been without tap water since the suspension order.
This is the third city which got affected by chemical spill in China.