Water Supply Act Article 56

The planning, design, supervision, and appraisal of an engineering work of water supply enterprises that is above certain scale as designated by the central authority-in-charge shall be certified by lawfully registered professional hydraulic engineers or professional engineers in related fields. Notwithstanding the foregoing, water supply works initiated by a government agency or a public water supply enterprise may be certified by lawfully qualified professional hydraulic engineers or professional engineers in related fields working for the agency or enterprise.The specialties of professional engineers in related fields will be announced by the central authority-in-charge in consultation with the central professional engineer authority.
中文原文 自來水法第56條
自來水事業工程之規劃、設計、監造及鑑定,在中央主管機關指定規模以上者,應經依法登記執業之水利技師或相關專業技師簽證。
但政府機關或公營自來水事業機構起造之自來水事業工程,得由該機關或機構內依法取得水利技師或相關專業技師證書者辦理。
前項相關專業技師之科別,由中央主管機關會商中央技師主管機關公告之。

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