In 2021, around 52 percent of the river water samples across China had been categorized as Grade II, which serves mainly as drinking water and belongs to surface water source primary protection zone in China.
Average river water quality in China in 2020 and 2021, by quality
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Ministry of Ecology and Environment (China). (May 27, 2022). Average river water quality in China in 2020 and 2021, by quality [Graph]. In Statista. Retrieved March 28, 2023, from https://www.statista.com/statistics/1065058/china-share-of-river-water-quality-across-the-country/
Ministry of Ecology and Environment (China). "Average river water quality in China in 2020 and 2021, by quality." Chart. May 27, 2022. Statista. Accessed March 28, 2023. https://www.statista.com/statistics/1065058/china-share-of-river-water-quality-across-the-country/
Ministry of Ecology and Environment (China). (2022). Average river water quality in China in 2020 and 2021, by quality. Statista. Statista Inc.. Accessed: March 28, 2023. https://www.statista.com/statistics/1065058/china-share-of-river-water-quality-across-the-country/
Ministry of Ecology and Environment (China). "Average River Water Quality in China in 2020 and 2021, by Quality." Statista, Statista Inc., 27 May 2022, https://www.statista.com/statistics/1065058/china-share-of-river-water-quality-across-the-country/
Ministry of Ecology and Environment (China), Average river water quality in China in 2020 and 2021, by quality Statista, https://www.statista.com/statistics/1065058/china-share-of-river-water-quality-across-the-country/ (last visited March 28, 2023)
Average river water quality in China in 2020 and 2021, by quality [Graph], Ministry of Ecology and Environment (China), May 27, 2022. [Online]. Available: https://www.statista.com/statistics/1065058/china-share-of-river-water-quality-across-the-country/