In the first half of the year, the national ecological environment quality status | The quality of the nationwide surface water environment has continued to improve

CCTV News: In the first half of this year, the quality of the surface water environment across the country continued to improve. In the section of the surface water assessment section of 3,641 countries, the proportion of excellent water quality section was 85.7%, an increase of 4.0 percentage points year -on -year;

Li Wen Pan, deputy director of the Water Ecological Environment Monitoring Office of China Environmental Monitoring Station: From the perspective of monitoring data, the national water quality of this year has shown a year -on -year double improvement. The level of water environmental physical and chemical indicators has been close to or even reached the level of middle -developed countries.

According to experts, according to the quality standards of the surface water environment, it is mainly divided into 6 categories, namely Class Ⅰ, Ⅱ, III, Class IV, category and inferior categories. Among them, the water quality of class Ⅰ, Ⅱ, and Class I, and type III is called excellent water body.

Li Wen Pan, deputy director of the Water Ecological Environment Monitoring Office of China Environmental Monitoring Station: Under normal circumstances, the national natural reserve and drinking water sources require the water quality standards of the water environment to reach Class I -III. For example, the Danjiangkou Reservoir of the water source of the South -to -North Water Diversion Project is the first -level water source reserve of the country. The water quality is maintained at the level of Class I Ⅱ all year round.

【Edit: Tian Boqun】

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