Evaluation of Water Quality in Qingcaosha Reservoir of Shanghai

Abstract:

The water quality survey was divided into four parts such as conventional physical and chemical indicators, organic matters, algaes and nutrients indicators. Water pollution index (WPI) was adopted to evaluate the water quality. The results show that indicator changes are all linked to the growth of algaes in water. Considering total nitrogen, water quality of site 5 is even up to Ⅴ inferior class, the reservoir as a whole for Ⅳ class; without total nitrogen, water quality of site 5 is above Ⅲ class, water quality of site 3 is above ⅡClass, the reservoir as a whole for Ⅱ class. The Qingcaosha reservoir as a drinking water source can fully meet water quality requirements.

Key words:reservoir; water quality evaluation; water quality investigation; organic matters; water pollution index (WPI)