Residents line up to buy bottled water in a supermarket in Jingjiang City of east China's Jiangsu Province on Friday[Photo/CFP]

NANJING -- Water supply in Jingjiang City of east China's Jiangsu Province was suspended after abnormal water quality was detected in the Yangtze River water source, the city's official microblog announced in a statement around noon Friday.

The government has started an emergency response plan, according to the brief statement on the Twitter-like Sina Weibo.

It did not say when water supply will be resumed.