Drinking Water Management Act Article 15

Competent authorities at all levels may send personnel to enter public and private premises bearing documents verifying their duties or with other identification sufficiently indicating they are authorized to inspect drinking water source quality, drinking water quality, stationary continuous water supply equipment, drinking water treatment chemicals, or seek relevant samples or data. Evasion, obstruction, or refusal by owners, users, or managers of public or private premises is prohibited.
中文原文 飲用水管理條例第15條
各級主管機關得派員並提示有關執行職務上證明文件或顯示足資辨別之標誌,進入公私場所,檢查飲用水水源水質、飲用水水質、連續供水固定設備、飲用水水質處理藥劑或採取有關樣品、索取有關資料,公私場所之所有人、使用人或管理人,不得規避、妨礙或拒絕。

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