Distribution of surface water in China 2016 by water quality

This statistic shows the distribution of surface water in China in 2016, by water quality. That year, around 37.5 percent of the surface water in China had been categorized as Grade II which serves mainly as drinking water and belongs to surface water source primary protection zone in China.

Distribution of surface water in China in 2016, by water quality

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Source

Release date

June 2017

Region

China

Survey time period

2016

Supplementary notes

According to Surface Water Environment Quality Standards of China the water quality is categorized as follow:

Grad I: Source water and national nature reserve; Grade II: Drinking water and surface water source primary protection zone; Grade III: Drinking water and surface water source secondary protection zone; Grad IV: Industrial water use and recreational water use; Grade V: Agricultural water use and General landscape requirements.

low quality surface water refers to surface water worse than Grade V.

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Statistics on "Quality of environment in China"

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