As to how to clean up the Tamsui River system, Premier Yu stated that his preliminary view is that the main sources of pollution of the Tamsui River system are pollution caused by urban domestic sewage, industrial waste water, and refuse dumped along the river banks.
對於如何整治淡水河系，俞院長亦表示了他初步的看法，他以為，淡水河系的主要汙染來源是都市家庭汙水、工業廢水和胡亂在河邊堆棄垃圾引起的汙染。