Water Supply Act Article 65

A water supply enterprise may charge individual users subsidy fees up to one half of the cost incurred from adding or installing new distribution main pipes for those users residing in areas without main pipelines.
中文原文 自來水法第65條
自來水事業為因應尚未埋設幹管地區個別自來水用戶供水需要,須增加或新裝配水幹管時,得按其成本向個別用戶收取二分之一以下之補助費。

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