On the morning of February 20, 2009, due to the chemical pollution of tap water source, there was a large-scale water cut in Yancheng City, Jiangsu Province, which affected the lives of at least 200,000 residents. On February 2 1 day, the enterprises involved were ordered to shut down. At 8 o'clock on the morning of February 22, the water quality of the polluted water intake of Chengxi Water Plant in Yancheng City has reached the standard, and the water plant began to enter the trial production state.
On February 23, when the news that the water pollution case in Yancheng, Jiangsu Province was solved was reported, people sighed more after the joy of the truth. It turned out that the pollution source that caused hundreds of thousands of residents in a city to stop water supply turned out to be 30 tons of industrial wastewater, and the perpetrator turned out to be a local model enterprise-Yancheng Biaoxin Chemical Plant. In recent ten years, tens of thousands of major water pollution accidents have occurred in China.
In 2009, heavy metal pollution in Xiangjiang River threatened the drinking water safety of 40 million people.
As a "hometown of nonferrous metals", most enterprises such as mining, smelting and chemical industry are located in Xiangjiang River Basin, from which heavy metal pollution comes. For a long time, the emissions of mercury, cadmium, chromium and lead in Hunan ranked first in China, and the emissions of arsenic, sulfur dioxide and chemical oxygen demand (COD) ranked first in China. As the mother of Hunan, the drinking water safety of 40 million people in the basin is threatened, and the consequences of heavy metal pollution in Xiangjiang River and Xiangjiang River Basin are becoming more and more serious: the normal water supply in Xiangjiang River Basin is threatened by interruption; Accidents that endanger human health due to excessive heavy metals occur from time to time; Fish has been greatly reduced, thousands of acres of farmland can not be cultivated, and a considerable area of fish, grain and vegetables can not be eaten.