In ecological sanitation and sustainable water management, what is the term used to describe wastewater from domestic sinks, showers, and washing machines that does not contain human waste?

Answer: B. Greywater

• Answer: B
• Explanation: Greywater is gentle wastewater generated from household uses like bathing, dishwashing, and laundry. Because it contains far fewer pathogens than Blackwater (wastewater from toilets containing fecal matter), greywater can be easily treated locally and recycled for landscape irrigation and toilet flushing.

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