On January 16, 2024, it was shown on the monitoring information release platform of key sewage enterprises in Shaanxi Province that the total discharge port of biochemical treatment station of Hancheng City **Water Co. Ammonia nitrogen, 1/12-1/15 was suspected to exceed the emission standard. PECC reflected the situation to the local environmental protection bureau through 12369 and Weibo, as detailed in the following chart:

Feedback received from the local EPA on January 26, 2024: a decision has been made to address the deadline.