In April, the Mingde (明德), Baihe (白河), Jingmian (鏡面), Chengcing Lake (澄清湖) and Fengshan (鳳山) reservoirs were the five category-one reservoirs with the most eutrophication, the report said. The Feitsui Reservoir (翡翠水庫), which provides water for the Taipei metropolitan area, has the best water quality, and is also considered oligotrophic, the report said. Mesotrophic water contains a moderate amount of nutrients, encouraging the growth of submerged aquatic plants, while oligotrophic water is clear and of higher quality. Speaking about the report on Friday, Hou Chia-hung (侯嘉洪), a professor at National Taiwan University’s (NTU) Graduate Institute of Environmental Engineering, said that precipitation levels can affect the water quality of reservoirs. Hou said that changing how the land around the reservoirs is used is key to stabilizing reservoir water supply.

Source: Taipei Times August 01, 2021 15:56 UTC