Reviewer tip: Fixtures and fittings as a sub metered system in WEc Water Metering

Green Building Team on February 28, 2021

Rating System/Standard
Green Building

To earn LEED v4/v4.1 BD+C WEc Water Metering, the project must install permanent water meters for at least two water subsystems. In order to contribute, at least 80% of a subsystem must be metered directly, or must be deduced by subtracting all other metered subsystems.

If you want to include indoor plumbing fixtures and fittings as a contributing subsystem but are not directly metering indoor plumbing fixtures, remember that the consumption of fixtures and fittings can only be deduced if ALL other subsystems (including all process water) are metered. Typically, water consumption of appliances like dishwashers and clothes washers, and process water associated with housekeeping rooms, are not metered. This means that the water used by fixtures and fittings cannot be deduced, and this subsystem should not be claimed.

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