855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 108

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quickly on observed inefficiencies. Understanding regular water consumption patterns can lead to immediate resolutions when abnormal water use occurs.

Additional considerations All reclaimed water use must be metered to meet the credit requirements. If reclaimed water is used in multiple subsystems (e.g., for irrigation, cooling tower makeup water, or process water), deduction calculations may be used for one subsystem. For example, a project uses municipally supplied reclaimed water for irrigation and cooling tower makeup water. The reclaimed water is metered at the building level, with a submeter on the irrigation system. The cooling tower makeup water usage can be calculated by subtracting the irrigation water usage (measured by the submeter) from the total reclaimed water measured at the building level.

If a project uses reclaimed water exclusively for a subsystem and the subsystem is metered, it satisfies the credit requirements for submetering two end uses. For example, if a project meters reclaimed water used solely for irrigation, it meets the credit requirements for submetering irrigation and reclaimed water usage, which counts as two end uses.

Projects with water subsystems metered at the campus level, without individual metering for subsystems within the project boundary, are not eligible for this credit. For example, projects with irrigation metered solely at the campus level, without metering for landscape areas within the project boundary, do not qualify for this credit.

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 98