Water Supply Act Article 93-6

The regulations governing the qualifications, criteria, and procedure for permit application by water pipe installation contractor, classification of water pipe installation contractor, as well as employment, qualifications of technical personnel, and other requirements shall be stipulated by the central authority-in-charge.
中文原文 自來水法第93-6條
自來水管承裝商許可之資格、條件、申請程序及其分類、施工計畫與所屬技術員工之聘用、資格及其他應遵行事項,其管理辦法,由中央主管機關定之。

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