Which of the following is considered potable water?

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试卷: LEED GA模拟题D[查看]
Which of the following is considered potable water?
A: Municipally recycled water used for landscape irrigation
B: Wastewater from water closets
C: Harvested rainwater used for flushing toilets
D: Water from local well used for lavatory faucets that meets EPA’s drinking water quality standards

参考答案: D

本题解释:
Notes:

Reference: LEED for Existing Buildings: Operations & Maintenance Reference Guide, Glossary
A:Recycled water is non-potable water. This type of water is often supplied by purple pipes which indicate the water is not fit for drinking.
B:This is just wastewater, which makes it non-potable.
C:Harvested rainwater is non-potable and does not meet EPA\'s drinking quality standards.
D:One of the goals of the Water Efficiency credits is to reduce the water taken from subsurface sources such as wells and natural aquifers. Water that meets EPA\'s drinking water standards is fit for human consumption and is considered potable.