On March 27, 2023, Shandong Province, the national key monitoring enterprise monitoring information release platform shows that Zouping ** Water Co. ammonia nitrogen, total nitrogen 3.5-3.12, COD 3.4-3.11, total phosphorus 3.4-3.14, 3.23 suspected of exceeding the emission standards. PECC reflected the situation to the local environmental protection bureau through 12369 and microblogging, see below:

April 6, 2023 received feedback from the local environmental protection bureau: for the enterprise exceeded the standard behavior has been investigated and verified, issued a notice ordering the correction of illegal acts and filed a case.