Discover the correct graywater source for the USGBC LEED Green Associate Certification Exam. Learn why lavatory faucets are considered graywater while toilets and urinals are not.
Table of Contents
Question
Which of the following is a source of graywater?
A. Toilets
B. Urinals
C. Sprinklers
D. Lavatory faucets
Answer
D. Lavatory faucets
Explanation
Graywater refers to relatively clean wastewater from domestic activities such as washing dishes, laundry, and bathing. Water from lavatory faucets falls into this category. Graywater can be treated and reused for non-potable purposes such as toilet flushing or irrigation, which can help conserve water.
Graywater refers to wastewater generated from domestic activities such as laundry, dishwashing, and bathing, which can be recycled on-site for uses such as landscape irrigation and constructed wetlands. Graywater differs from blackwater in that it does not contain human waste from toilets and urinals.
Lavatory faucets, also known as bathroom sinks, are a source of graywater because the water used for hand washing and other activities in these fixtures does not come into contact with human waste. This wastewater can be collected, treated, and reused for non-potable purposes.
On the other hand, toilets and urinals generate blackwater, which contains human waste and requires more extensive treatment before it can be safely reused or discharged into the environment. Sprinklers are used for irrigation and do not generate wastewater; instead, they consume water.
In the context of the LEED Green Associate Exam, it’s essential to understand the difference between graywater and blackwater sources to effectively apply sustainable water management strategies in green building projects.
USGBC LEED Green Associate certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the USGBC LEED Green Associate exam and earn USGBC LEED Green Associate certification.