It is essential of developing suitable water quality inspection technologies and equipment in order to deepening water reform in rural areas, water quality assessment and ensure safe drinking water.

Objective To know the toilet reforms influence to the flies species density in the countryside of Jinan, evaluating the sanitary result of toilet reform of countryside.

Aim To understand the status of drinking water quality in Nanshan District of Shenzhen City and provide scientific basis for improvine the drinking water quality in urban an suburban areas.