What type of water should be avoided for makeup water?

google

试卷: LEED AP EB模拟题 A卷[查看]
What type of water should be avoided for makeup water?
A: Air-conditioner condensate
B: Cooling tower blowdown
C: Naturally occurring surface water
D: Swimming pool filter backwash water

参考答案: C

本题解释:
Notes:
See Reference Guide, WE Credit 4, Requirements

Avoid the use of naturally occurring groundw ater or surface water for makeup water.