A survey by Associate Professor Ding Wang-hsien of NCU's chemistry department showed that over half of Taiwan's rivers, including the Tanshui, Touchien, Putsu and Tungkang Rivers, contain nonylphenols, with residual concentrations far higher than in Europe and North America.
中央大學化學系副教授丁望賢的調查顯示，包括淡水河、頭前溪、朴子溪、東港溪等流域，台灣半數以上河川含有壬基苯酚，殘留濃度更遠高於歐美地區。