On September 10, 2021, the public platform for self-monitoring information of key monitoring enterprises in Liaoning Province showed that the total phosphorus of the total discharge of XXX Wastewater Treatment Plant was suspected to be discharged in excess of the standard on August 12, 2021 and September 1, 2021. PECC reflected the situation to the local environmental protection bureau via 12369 and Weibo, as detailed in the following chart:

On October 15, 2021, received Tieling City Ecological Environment Bureau, Zhaibingshan Branch of the Office of Letters and Visits specific reply: for the enterprise exceeded the standard, has been issued a notice ordering corrective action.