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critical that projects track consumption from these appliances to ensure efficient operations and identify water-supply failures.

The requirement for metering water use in a commercial kitchen depends on the number of daily meals served. Kitchens designed to serve 100 or more daily meals must meter and report all water use from kitchen operations.

Public laundry facilities Typical commercial laundry systems include large top- or front-load washing machines used to process thousands of pounds (or kilograms) of laundry annually. Front-load washers use less water and energy than top-load washers. However, even when using ENERGY STAR®® (or performance-equivalent) equipment, it is critical that projects track water consumption from these machines to ensure efficient operations and identify water-supply failures.

The requirement for metering water use in a commercial laundry depends on the pounds (or kilograms) of laundry processed annually. Laundry facilities designed to process 120,000 lbs. (57,606 kg.) of laundry annually must meter and report all water use from the laundry operations.

Option 3. Leak Detection Sensors

Water lost through leaks strains capital and natural resources while creating health and safety risks. [27] Lower system pressures can allow pollutants to be drawn in from the surroundings, leading to foul drinking water. [28] Capital losses can result from labor costs to identify a leak’s location as well as from labor hours and material costs necessary to repair major damage. Leaks that are not addressed commonly cause higher bills.

Projects pursuing this option must install permanent water flow meters or sensors for all flush fixtures within the project boundary. The devices must report abnormalities and generate an alarm at a local network, BMS, cloud service, app, or online database accessible by the facility manager and tenants.

Data access and action plan Providing access to data and regularly performing reviews optimizes an operator’s ability to address water leaks. Develop an action plan that addresses, at minimum, data access for

27 “Overview of Available Leak Detection Technologies”, Pacific Northwest National Laboratory, (2019), retrieved from https://www.pnnl.gov/main/publications/external/technical_reports/PNNL-28885.pdf. 28 R. Collins, J. Boxall, M. Besner, S. Beck and B. Karney, “Intrusion Modelling and the Effect of Ground Water Conditions”, Water Distribution Systems Analysis 2010, (2011).

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 81