Water Supply Act Article 45

A water supply enterprise shall record daily the quality control of water, the operations of water supply equipment, the volume and the pressure of water supply for future inspection.
中文原文 自來水法第45條
自來水事業對於水質之控制,各種自來水設備之操作,及供水之水量、水壓等,均應逐日記錄,以備查考。

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