Water Act Article 6
Where a water district extends over two or more provinces (municipalities) or is of significant interest that may present hardship in administration by the local government, the central authority-in-charge may establish a water agency to administer over the water works in the district.
中文原文 水利法第6條
水利區涉及二省（市）以上或關係重大地方難以興辦者，其水利事業，得由中央主管機關設置水利機關辦理之。