On March 7, 2023, Shaanxi Province, the national key monitoring enterprise monitoring information release platform shows that Xi'an ** Water Purification Co. Ammonia nitrogen, total nitrogen at 3.4-3.6, COD at 2.28, 3.1, 3.4 is suspected of exceeding the emission standards. PECC reflected the situation to the local environmental protection bureau through 12369 and microblogging, see below:

March 23, 2023 received feedback from the local environmental protection bureau: for the enterprise exceeded the standard has been investigated and verified, ordered the enterprise to carry out rectification and fined 500,000 yuan.