Water Pollution Control Act Article 3

The competent authority referred to in this Act means the Environmental Protection Administration, Executive Yuan, at the central government level, the municipal government in special municipalities and the county or city government in counties or cities.
中文原文 水污染防治法第3條
本法所稱主管機關:在中央為行政院環境保護署;在直轄市為直轄市政府;在縣(市)為縣(市)政府。

English translation for reference only; the Chinese text prevails. Not legal advice.