What is an environmental benefit of using graywater for irrigation?

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试卷: LEED GA模拟题C[查看]
What is an environmental benefit of using graywater for irrigation?

A: Drip irrigation can be used
B: Preserving aquifers
C: Reduced heat islands
D: Increased irrigation efficiency

参考答案: B

本题解释:
Notes:

Reference: LEED 2009 for New Construction and Major Renovations Rating System
Drip irrigation does not require a specific type of water. Potable or non-potable (graywater) can be used.

An aquifer is an underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well. Aquifers are critically important in human habitation and agriculture.

Water efficient landscaping helps reduce the need from potable water from local and regional aquifers. LEED rewards projects for reducing potable water (drinking water) use for landscaping. Reducing potable water use preserves aquifers for future generations.

Using potable or non-potable water for irrigation does not impact heat islands.

The type of water does not determine the irrigation efficiency. The type of irrigation system (drip, conventional, etc) does.