LEED AP Building Design and Construction (BD+C) Practice Exam

Which of the following fixtures must be included in indoor water use reduction calculations?

1. Toilets only

2. Showers and kitchen sinks only

3. Water closets and urinals only

4. Water closets, urinals, lavatory faucets, showers, kitchen sink faucets, and pre-rinse spray valves

The correct answer is: Water closets, urinals, lavatory faucets, showers, kitchen sink faucets, and pre-rinse spray valves

The most comprehensive answer includes water closets, urinals, lavatory faucets, showers, kitchen sink faucets, and pre-rinse spray valves. This choice reflects the requirement to consider a wide array of fixtures when calculating indoor water use reduction as outlined by LEED standards. In LEED's framework, reducing indoor water use involves assessing the efficiency of all relevant plumbing fixtures, which contributes significantly to an overall reduction in water consumption in a building. Each type of fixture plays a role in the total indoor water usage, and LEED emphasizes that a holistic approach should be taken to water conservation efforts. By including a variety of fixtures, the calculation acknowledges the diverse ways in which water is used and provides a more accurate picture of a building's water efficiency. This approach aligns with the goals of sustainable design by promoting not only the reduction of water usage but also the thoughtful consideration of how water is consumed in daily activities. Therefore, including all specified fixtures allows for a more effective strategy in achieving water efficiency credits in a LEED project.