Enforcement Rules for Water Supply Act Article 6

Where necessary, water supply enterprise may ask the assistance of local police or relevant agencies when it installs underground pipelines or equipment over private land pursuant to Article 52 of the Act.Pursuant to Article 52 of the Act, the water supply enterprise shall give the landowners or land users a seven-day advance notice in writing prior to performing installation work on private land. Such notice shall describe the area the pipelines or equipment will pass through, planned work start and ending dates, and name and address of unit-in-charge. Notwithstanding the foregoing, the notice may be made verbally in case the work is of urgent nature.
中文原文 自來水法施行細則第6條
自來水事業依本法第五十二條規定,於私有土地內埋設水管或其他設備,必要時得請求當地警察或相關機關協助。
自來水事業依本法第五十二條規定事先通知土地所有權人或使用人時,應於開始施工七日前以書面為之,敘明水管或其他設備經過處所、預定興工與竣工期限、主辦單位及通訊地址。
但因緊急措施而施工者,得以口頭通知之。

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