855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 106

Extracted Content

REQUIREMENTS EXPLAINED

This credit encourages projects to develop a metering strategy beyond the requirements of WEp1: Water Metering and Reporting . Projects pursuing this credit must permanently install submeters that track water use from at least two water subsystems. Submetering allows facility managers to monitor water consumption at the system level. With transparency into water usage, facility managers can take an active approach to water-saving strategies, leading to decreased demand on the water supply.

Selecting Applicable Subsystems

Identify all water-using subsystems within the project boundary. As applicable to the project, install or use existing submeters for at least two of the following subsystems: irrigation systems, indoor plumbing fixtures and fittings, cooling towers, domestic hot water systems, reclaimed water usage, or other process water systems, including but not limited to commercial kitchen or laundry water use.

For multifamily buildings, submeters for water use in each residential unit comply with credit requirements.

Determine Scope of Submetering

If the project team is claiming credit for irrigation, indoor plumbing fixtures, domestic hot water, or other process water submeters, at least 80% of water distribution must be submetered. If 100% of the water used by a subsystem is metered, no calculation is necessary.

Determine how much of the total water system will be submetered by comparing the submetered portions with the total landscape area, number of indoor fixtures, domestic water heating units, or process use quantities, as follows:

IRRIGATION

Calculate the percentage of irrigated landscape area as the total metered irrigated landscape area divided by the total irrigated landscape area. Landscape areas fully covered with xeriscaping or native vegetation that require no routine irrigation may be excluded from the calculation. Equation 1. Landscape area (Metered irrigated landscape area)/(Total irrigated landscape area) ≥ 0.8

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 96