Sichuan Wastewater Treatment Plant, Xichang, Sichuan Province

The Sichuan wastewater treatment plant is located in Xichang, a city in Liangshan Yi Autonomous Prefecture, Sichuan Province, China. It serves a population of approximately 206,200, placing it in the medium-to-large agglomeration category for Chinese municipal wastewater infrastructure. Under China's national wastewater discharge standards (GB 18918-2002), plants of this scale are typically required to achieve at least secondary treatment, with stricter limits for sensitive water bodies. The plant's treatment process and capacity details are not publicly available, but regulatory compliance is overseen by local environmental protection bureaus. The treated effluent is discharged into local waterways that ultimately drain into the Yangtze River basin. The region's mountainous terrain and proximity to the Anning River valley influence the local watershed, supporting agricultural and ecological systems downstream.

The plant discharges into the Anning River, a tributary of the Yalong River, which flows into the Jinsha River and eventually the Yangtze River. The downstream environment includes agricultural areas and ecologically sensitive zones that support diverse aquatic life. Proper treatment is essential to protect water quality in this important river system.