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River water quality share in China 2020-2021, by level

Published by Statista Research Department, Mar 14, 2023
In 2021, around 52 percent of the river water samples across China had been categorized as Grade II, which serves mainly as drinking water and belongs to surface water source primary protection zone in China.

Average river water quality in China in 2020 and 2021, by quality

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Source

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Release date

May 2022

Region

China

Survey time period

2020 and 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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