LEED - Leadership in Energy and Environmental Design Water Efficiency Concepts Questions and Answers

Question 1

A project team is designing a new office building and wants to earn points for Outdoor Water Use Reduction.
Which of the following strategies is required to be prioritized before accounting for alternative water sources or smart irrigation technology?

Accepted Answer

Plant species selection and irrigation system efficiency.

Answer

Installing artificial turf on 50% of the landscaped area.

Answer

Using only potable water from the municipal supply for all irrigation needs.

Answer

Achieving a 10% reduction from the baseline peak watering month demand.

Question 2

To comply with the Indoor Water Use Reduction prerequisite in LEED v4.1, which of the following fixture types, when newly installed, MUST be WaterSense labeled?

Accepted Answer

Residential (tank-type) toilets

Answer

Public lavatory faucets

Answer

Tankless toilets

Answer

Kitchen faucets

Question 3

A project's cooling tower operates with high 'cycles of concentration'. What is the primary water efficiency benefit of this strategy?

Accepted Answer

It reduces the amount of makeup water needed by minimizing blowdown.

Answer

It increases the rate of evaporation, cooling the water faster.

Answer

It eliminates the need for chemical treatment of the tower water.

Answer

It increases the total dissolved solids (TDS) to improve heat transfer.

Question 4

A project team is calculating the Full-Time Equivalent (FTE) occupants for the indoor water use calculations. A part-time employee works 20 hours per week in a standard 40-hour work week. What is the FTE value for this employee?

Accepted Answer

0.5

Answer

1.0

Answer

0.75

Answer

0.25

Question 5

Which of the following is an example of 'process water' in the context of the LEED Water Efficiency category?

Accepted Answer

Water used in a building's cooling towers and boilers.

Answer

Water used for landscape irrigation.

Answer

Water used in kitchen dishwashers and sinks.

Answer

Water used for flushing toilets and urinals.

Question 6

To meet the prerequisite for Indoor Water Use Reduction, a project must demonstrate an aggregate reduction in water consumption from a calculated baseline. What is the minimum percentage reduction required?

Accepted Answer

20%

Answer

10%

Answer

30%

Answer

40%