In 2020, among 112 selected key lakes across China, around 77 percent had been categorized with a water quality of Grade I to III, which serves mainly as drinking water and belongs to surface water source protection zone in China.
Key lake water quality on average in China in 2020, by 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.
Profit from the additional features of your individual account
Currently, you are using a shared account. To use individual functions (e.g., mark statistics as favourites, set
statistic alerts) please log in with your personal account.
If you are an admin, please authenticate by logging in again.
Statista Accounts:
Access All Statistics. Starting from $468 / Year
Learn more about how Statista can support your business.
Ministry of Ecology and Environment (China). (May 26, 2021). Key lake water quality on average in China in 2020, by quality [Graph]. In Statista. Retrieved August 15, 2022, from https://www.statista.com/statistics/1065068/china-distribution-of-water-quality-of-key-lakes-across-the-country/
Ministry of Ecology and Environment (China). "Key lake water quality on average in China in 2020, by quality." Chart. May 26, 2021. Statista. Accessed August 15, 2022. https://www.statista.com/statistics/1065068/china-distribution-of-water-quality-of-key-lakes-across-the-country/
Ministry of Ecology and Environment (China). (2021). Key lake water quality on average in China in 2020, by quality. Statista. Statista Inc.. Accessed: August 15, 2022. https://www.statista.com/statistics/1065068/china-distribution-of-water-quality-of-key-lakes-across-the-country/
Ministry of Ecology and Environment (China). "Key Lake Water Quality on Average in China in 2020, by Quality." Statista, Statista Inc., 26 May 2021, https://www.statista.com/statistics/1065068/china-distribution-of-water-quality-of-key-lakes-across-the-country/
Ministry of Ecology and Environment (China), Key lake water quality on average in China in 2020, by quality Statista, https://www.statista.com/statistics/1065068/china-distribution-of-water-quality-of-key-lakes-across-the-country/ (last visited August 15, 2022)
