| Characteristic | 2023 | 2024 |
|---|---|---|
| - | - | - |
| - | - | - |
The chart is not accessible to screen readers. Please switch to the table view to access the data.
Download
Source
Source
Release date
June 2025
More information
Region
China
Survey time period
2024
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.
Citation formats
