In the past, a portion of this water did not have to be sent to the water treatment facility. Now, however, it is all run through the water treatment system to ease the worries of those outside the industry.
過去，除了空調用水中的冷卻用水並沒有限制排入汙水處理廠，現在未免外界疑慮也一律規定納入汙水處理系統。