On January 3, 2020, the chemical oxygen demand of "Jiangyin XXX Sewage Treatment Co., Ltd.", a self-monitoring platform of enterprises in Jiangsu Province, continuously exceeded the standard, and Lvse Jiangnan prompted the local environmental protection bureau through 12369 and microblog. See the picture below for details:

On March 31, 2020, the reply from the Environmental Protection Bureau was received: the data had been sampled, the monitoring results exceeded the standard, and the case was being filed.