NANJING, May 9 -- Water supply in Jingjiang City in east China's Jiangsu Province resumed on Friday after abnormal water quality was found in the Yangtze River water source, according to local authorities.

The city began backup water supply at 4:40 p.m., according to the city's publicity department.

The alternative water source from a pasture ecological park can meet residents' water consumption needs for a week.

The city's water company detected a strange odor in the river water around 10 a.m. on Friday.

Samples of the water have been sent for testing, according to a spokesman with the city government.

A string of water pollution incidents has aroused serious concern across China. The latest occurred last month in Lanzhou, capital city of northwest China's Gansu Province, when excessive levels of benzene were detected in the city's tap water.