经过处理的生活污水、工业废水、雨水等，水质介于清洁水和污水之间。也叫再生水reclaimed water

• 日本利用中水设施将洗衣水再用于冲马桶等。

  In Japan, water reclamation equipment reuses laundry water to flush toilets and so on.

• 济南加快建设中水和杂排水利用工程。

  Ji'nan is accelerating the construction of projects to use reclaimed water and mixed waste water.