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Green Plumbing

Category - Water-Efficient Technology

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Which of the following is a best management practice in working with graywater?

Avoid graywater from washing diapers or greasy rags.
Use only where groundwater is at least 12 inches below the surface.
Water lawns and landscaping only with flood or drip irrigation.
A and C above

Explanation

Answer: D - Keeping graywater from laundering diapers and greasy rags, and watering lawns and landscaping with flood or drip irrigation, are considered best management practices in working with graywater. For the third option, it is recommended that groundwater be at least five feet, not 12 inches, below the surface to minimize the risk of contamination of groundwater sources.

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