As of September 2024, around 32.8 percent of the Haihe Basin water in China was categorized as Grade II, which serves mainly as drinking water and belongs to surface water source primarily in a protection zone in China.
Distribution of Haihe Basin water in China as of September 2024, by water quality grade
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; Grade IV: industrial water use and recreational water use; Grade V: agricultural and general landscape water use.
Low quality surface water refers to surface water below Grade V.
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Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). (November 5, 2024). Distribution of Haihe Basin water in China as of September 2024, by water quality grade [Graph]. In Statista. Retrieved December 21, 2024, from https://www.statista.com/statistics/1065016/china-share-of-haihe-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). "Distribution of Haihe Basin water in China as of September 2024, by water quality grade." Chart. November 5, 2024. Statista. Accessed December 21, 2024. https://www.statista.com/statistics/1065016/china-share-of-haihe-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). (2024). Distribution of Haihe Basin water in China as of September 2024, by water quality grade. Statista. Statista Inc.. Accessed: December 21, 2024. https://www.statista.com/statistics/1065016/china-share-of-haihe-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre). "Distribution of Haihe Basin Water in China as of September 2024, by Water Quality Grade." Statista, Statista Inc., 5 Nov 2024, https://www.statista.com/statistics/1065016/china-share-of-haihe-basin-water-by-quality/
Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre), Distribution of Haihe Basin water in China as of September 2024, by water quality grade Statista, https://www.statista.com/statistics/1065016/china-share-of-haihe-basin-water-by-quality/ (last visited December 21, 2024)
Distribution of Haihe Basin water in China as of September 2024, by water quality grade [Graph], Ministry of Ecology and Environment (China) (China National Environmental Monitoring Centre), November 5, 2024. [Online]. Available: https://www.statista.com/statistics/1065016/china-share-of-haihe-basin-water-by-quality/
