Energy & Environment
Water & Wastewater

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River water quality change in China 2022, by level

Published by

Daniel Slotta,

Jan 3, 2024

In 2022, river water samples across China categorized as Grade I to III had increased by around 3.2 percentage points compared to the previous year. Among other changes, this was an indication of general improvement of river water quality in China.

Average river water quality change in China in 2022, by quality

table column chart

Characteristic	Change in percentage points
Grade I to III	3.2%
Worse than Grade V	-0.5%

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Details: China; Ministry of Ecology and Environment (China); 2022

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Source

Ministry of Ecology and Environment (China)

Survey by

Ministry of Ecology and Environment (China)

Source link

Bulletin on the state of the environment in China 2022, page 22

Release date

May 2023

Citation formats

Region

China

Survey time period

2022

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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