According to investigations by the Environmental Protection Administration, the primary culprit in this pollution incident is slag from the nearby Chao Hsiang Recycling Center, which may have been washed away from the center by the flooding caused by Typhoon Morakot.
根據環保署調查，造成此次污染的元兇，為設在農田旁的超翔爐碴場，受到莫拉克風災的淹水影響，導致爐碴流出、滲入稻田而污染土壤。