This statistic shows the distribution of surface water in China in 2016, by water quality. That year, around 37.5 percent of the surface 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 surface water in China in 2016, by water quality
According to Surface Water Environment Quality Standards of China the water quality is categorized as follow:
Grad 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). (June 5, 2017). Distribution of surface water in China in 2016, by water quality [Graph]. In Statista. Retrieved November 21, 2024, from https://www.statista.com/statistics/862517/china-share-of-surface-water-by-quality/
Ministry of Ecology and Environment (China). "Distribution of surface water in China in 2016, by water quality." Chart. June 5, 2017. Statista. Accessed November 21, 2024. https://www.statista.com/statistics/862517/china-share-of-surface-water-by-quality/
Ministry of Ecology and Environment (China). (2017). Distribution of surface water in China in 2016, by water quality. Statista. Statista Inc.. Accessed: November 21, 2024. https://www.statista.com/statistics/862517/china-share-of-surface-water-by-quality/
Ministry of Ecology and Environment (China). "Distribution of Surface Water in China in 2016, by Water Quality." Statista, Statista Inc., 5 Jun 2017, https://www.statista.com/statistics/862517/china-share-of-surface-water-by-quality/
Ministry of Ecology and Environment (China), Distribution of surface water in China in 2016, by water quality Statista, https://www.statista.com/statistics/862517/china-share-of-surface-water-by-quality/ (last visited November 21, 2024)
Distribution of surface water in China in 2016, by water quality [Graph], Ministry of Ecology and Environment (China), June 5, 2017. [Online]. Available: https://www.statista.com/statistics/862517/china-share-of-surface-water-by-quality/
