Distribution of Yellow River Basin water in China July 2019, by water quality

As of July 2019, around 41 percent of the Yellow River Basin 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 Yellow River Basin water in China as of July 2019, by water quality

Proportion of water
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Source

Release date

August 2019

Region

China

Survey time period

July 2019

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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