Pharmaceutical Good Manufacturing Practice Regulations Article 13

Chinese herbal medicine factories shall, as needed, install facilities for the processing of general use and wastewater, and facilities for the production of boiler water or distilled water. Water supply facilities shall be kept from contaminating products.
中文原文 藥物優良製造準則第13條
中藥廠應視作業需要,設置一般用水處理、純淨水處理、鍋爐或蒸餾水製造設施。
供水設施,應避免污染產品。

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