Water Act Article 42

Surface or ground water usage for the following purposes are exempt from water right registration:1. domestic use and livestock water consumption;2. water consumption in accordance with Subparagraph 4, Paragraph 1, Article 19 of the Indigenous Peoples Basic Law;3. hot spring water less than two cubic meters per household per day; and 4. water drawing by means of human power, animal power, or other simple means.The authority-in-charge may give recognition upon, or order a water right registration of, the use of water under the preceding paragraph if such use is suspected of interfering with public water works or water usage by others.Before the implementation of the amended Act on May 6, 2016, the authority-in-charge shall a water right registration of the well drilling on private land, provided that its water output is less than 100 liters per minute, in accordance with the plan, except water usage for the purposes stipulated in Paragraph 1 are exempt from water right registration.
中文原文 水利法第42條
下列引取地面水或抽汲地下水之用水行為,免為水權登記:
一、家用及牲畜飲料。
二、原住民依原住民族基本法第十九條第一項第四款規定利用水資源。
三、溫泉水源,家用每戶每日取用水量在二立方公尺以下。
四、用人力、獸力或其他簡易方法引水。
前項用水,有妨害公共或他人用水利益之虞者,經主管機關認定後,得酌予限制或令其辦理水權登記。
本法中華民國一百零五年五月六日修正之條文施行前,在私有土地內鑿井汲水,其出水量每分鐘在一百公升以下者,除依第一項規定免為水權登記者外,主管機關應訂定計畫令其限期辦理水權登記。

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