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Distribution of surface water in China February 2021, by water quality

Published by Samantha Wong, Apr 19, 2021
As of February 2021, around 44 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 as of February 2021, by water quality

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Source

Release date

April 2021

Region

China

Survey time period

February 2021

Supplementary notes

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

Grade 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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