Water Pollution Control Measures and Test Reporting Management Regulations Article 26

Enterprises or sewage systems shall set up containment facilities at the lower slope in the section of land used for soil treatment to collect and treat wastewater or sewage overflow appropriately. However, this is not applicable if no overflow occurs after treatment of the soil.
中文原文 水污染防治措施及檢測申報管理辦法第26條
事業或污水下水道系統應於土壤處理之適用土地區段下坡處設置攔水渠,妥善收集處理溢流之廢(污)水。
但土壤處理後無溢流水者,不在此限。

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