Water quality has deteriorated in recent years in Shanghai, China. More species of hazardous organic contaminant have been discovered. In developed area such as Shanghai, water pollution is more and more severe. Water quality of rivers in Shanghai territory falls into category Ⅲ~IV, which does not meet drinking water source standard. Huangpu River, the mother river of shanghai native, which provides nearly 80% of the water supply for downtown Shanghai, is facing imminent severe water pollution problem.