855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 082

Extracted Content

Water Efficiency Prerequisite

MINIMUM WATER EFFICIENCY

WEp1

REQUIRED

INTENT

To reduce potable water consumption and the associated energy consumption and carbon emissions required to treat and distribute water and preserve potable water resources through an efficiency-first approach.

REQUIREMENTS

Achievement pathways	Points
Commercial Interiors	N/A
Minimum Fixture and Fittings Efficiency
Option 1. Prescriptive Path — Maximum Flush and Flow Rates	Option 1. Prescriptive Path — Maximum Flush and Flow Rates
OR	OR
Option 2. Performance Path — Calculated Reduction	Option 2. Performance Path — Calculated Reduction
AND	AND
Minimum Equipment Water Efficiency	Minimum Equipment Water Efficiency

Meet all minimum water efficiency requirements outlined below, as applicable to the project scope.

Minimum Fixture and Fittings Efficiency

Meet the minimum water efficiency requirements for fixtures and fittings outlined below.

Projects located where standard supply pressure is different than the LEED baseline supply pressure may calculate the water consumption of flow fixtures and fittings at the local standard supply pressure.

OPTION 1. PRESCRIPTIVE PATH — MAXIMUM FLUSH AND FLOW RATES

For all new and existing fixtures and fittings within the tenant space, do not exceed the maximum flush and flow rates listed in Table 1.

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 71