As of September 2024, around 63.2 percent of the Yangtze 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 Yangtze River Basin water in China as of September 2024, by water quality
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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Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). (November 5, 2024). Distribution of Yangtze River Basin water in China as of September 2024, by water quality [Graph]. In Statista. Retrieved November 23, 2024, from https://www.statista.com/statistics/1064987/china-share-of-yangtze-river-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). "Distribution of Yangtze River Basin water in China as of September 2024, by water quality." Chart. November 5, 2024. Statista. Accessed November 23, 2024. https://www.statista.com/statistics/1064987/china-share-of-yangtze-river-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). (2024). Distribution of Yangtze River Basin water in China as of September 2024, by water quality. Statista. Statista Inc.. Accessed: November 23, 2024. https://www.statista.com/statistics/1064987/china-share-of-yangtze-river-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). "Distribution of Yangtze River Basin Water in China as of September 2024, by Water Quality." Statista, Statista Inc., 5 Nov 2024, https://www.statista.com/statistics/1064987/china-share-of-yangtze-river-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre), Distribution of Yangtze River Basin water in China as of September 2024, by water quality Statista, https://www.statista.com/statistics/1064987/china-share-of-yangtze-river-basin-water-by-quality/ (last visited November 23, 2024)
Distribution of Yangtze River Basin water in China as of September 2024, by water quality [Graph], Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre), November 5, 2024. [Online]. Available: https://www.statista.com/statistics/1064987/china-share-of-yangtze-river-basin-water-by-quality/
