Water Supply Act Article 75
If there are any changes to major items registered for the self-use water supply equipment, its owner shall update the registration with the local authority-in-charge in one month from the date of change.
中文原文 自來水法第75條
自用自來水設備登記之主要事項如有變更時，其所有人應於變更一個月內，向所在地主管機關辦理變更登記。