By 2005, the Lianghui River water will be built around the Nancheng Xiaohongmen, Lugouqiao, Ng Ka Tsuen three sewage treatment plants, which will completely change Nancheng sewage situation.

• 到2005年，围绕南城的凉水河水系将建成小红门、卢沟桥、吴家村三座污水处理厂，这将完全改变南城的污水状况。