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Green Plumbing

Category - Water-Efficient Technology

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Which of the following is considered an unsafe use of treated graywater for single residences?

Clothes washing
Topping up a swimming pool
Outdoor wash-down
Surface irrigation

Explanation

Answer: B -Treated graywater is considered unsafe for use in topping up swimming pools. It has many other applications in which it can be safely used with appropriate treatment, including the three others listed above, as well as sub-surface irrigation, toilet flushing, and others.

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