Bodies of over 900 pigs have been retrieved from Shanghai's Huangpu River, a key source of drinking water for millions of residents in China's largest metropolis, local authorities said.
The dead pigs were spotted in the Songjiang section, the upstream of the Huangpu River which provides drinking water to people, according to city's water supplies bureau.
The bodies were found floating in the river water on Saturday and the local authorities are still retrieving dead pigs to avoid water contamination, state-run Xinhua news agency reported.
The bureau said the water quality has not been affected. To ensure tap water safety, local environmental protection and water supplies authorities have beefed up the quality examination of water disinfection process.
The Shanghai Agriculture Committee have also carried out a bio-safety treatment on the retrieved dead pigs. It is now investigating that from where these pigs have come.
The committee said that so far it has not received any reports of animal epidemic outbreaks in the city.
Huangpu River is the largest river in Shanghai which is China's largest city with the population of 23 million.