LEED v5 BD+C Rating System_November 2025_clean - Page 065

Extracted Content

Process	Requirement
Discharge water temperature tempering	Where local requirements limit the discharge temperature of fluids into drainage system, use a tempering device that runs water only when the equipment discharges hot water. OR Provide a thermal recovery heat exchanger that cools drained discharge water below code-required maximum discharge temperatures while simultaneously preheating inlet makeup water. OR If fluid is steam condensate, return it to boiler.
Venturi-type flow-through vacuum generators or aspirators	Use no device that generates vacuum by means of a water flow through device into drain.

AND

Minimum Outdoor Water Efficiency

OPTION 1. NO IRRIGATION

Show that the landscape does not require a permanent irrigation system beyond a maximum two-year establishment period.

OR

OPTION 2. EFFICIENT IRRIGATION

Reduce the project’s irrigation water requirement by at least 30% from the calculated baseline for the site’s annual theoretical irrigation requirement (TIR). Reductions must be achieved through plant species selection and irrigation system efficiency, as calculated by the TIR methodology outlined by the U.S. Environmental Protection Agency.

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, November 2025 Edition 58