Which strategies should be assessed to meet the Owner's Project Requirements goals of 45% reduction?

Which strategies should be assessed to meet the Owner’s Project Requirements goals of 45% reduction?

In the pre-design phase, a plumbing engineer identified that the low-flow fixtures which met the Owner’s requirements could achieve total reductions in indoor water usage of 39%.

Which strategies should be assessed to meet the Owner’s Project Requirements goals of 45% reduction?
A . Switching from municipally supplied potable water to potable well water on-site
B . Reducing irrigation needs by planting native species and drought-tolerant species
C . Reducing potable water supply by limiting occupant access to drinking fountains and public restrooms
D . Reducing process water demand by assessing kitchen and laundry equipment selection and operational. schedules

Answer: D

Explanation:

To achieve the Owner’s Project Requirements of a 45% reduction in indoor water usage, the strategy should focus on reducing process water demand. This can be done by evaluating the efficiency of kitchen and laundry equipment and optimizing their operational schedules to minimize water use. This approach targets water-intensive processes within the building, offering a significant opportunity for water savings.

Reference: The LEED v4 Reference Guide for Interior Design and Construction outlines strategies for reducing water use, which includes optimizing process water use as a means to achieve water efficiency within a building12.