In 2021, the water quality of 21 state-controlled and municipal monitoring sections in Jinshan District reached or was better than the Class III standard, and the excellent III. rate reached 81%, achieving the best level in recent years.
Among them, the permanganate index, total phosphorus and other indicators continued to decline, the average concentration of permanganate index in 2021 fell by 8.5 percentage points year-on-year, the average concentration of total phosphorus fell by 11.7 percentage points year-on-year; the dissolved oxygen index was stable and good, and the average concentration of dissolved oxygen in 2021 increased by 12.2 percentage points year-on-year
Source: Kingsoft Environment
Edit | Pantene (Trainee)
Editor-in-charge | Shen Yanfei