In fact, the waterworks which treat Taipei City's public water supply usually take their water from the natural flow of the Nanshih and Peishih rivers. It is only in the dry season, when these rivers do not provide enough water, that the supply has to be topped up with water from the Feitsui Reservoir.
事實上，處理台北市公共用水的淨水廠，平時接收的是南勢溪與北勢溪的天然流水，只有旱季溪流缺水，才需要翡翠水庫放水補充。