What type of water is rainwater?

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试卷: LEED GA模拟题D[查看]
What type of water is rainwater?

A: Blackwater
B: Graywater
C: Non-potable water
D: Potable water

参考答案: C

本题解释:
Notes:

Reference: LEED for Existing Buildings: Operations & Maintenance Reference Guide, Glossary

Blackwater is waste water from toilets and urinals. Water that has come in contact with food through kitchen sinks and dishwashers is usually classified as blackwater.
Graywater is defined by the Uniform Plumbing Code (UPS) as untreated house-hold wastewater which has not come into contact with toilet waste or kitchen sinks.

Graywater includes used water from bathtubs, showers, bathroom wash basins, and water from clothes-washer and laundry tubs. It does not include water from kitchen sinks or dishwashers.

In most jurisdictions rainwater is considered non-potable.

Potable water is water which is fit for consumption by humans and other animals. It is also called drinking water, in a reference to its intended use. Water may be naturally potable, as is the case with pristine springs, or it may need to be treated in order to be safe.