NAHB updates its Matrix of Water Efficiency Rating Systems
The National Association of Home Builders (NAHB) updated its Matrix of Water Efficiency Rating Systems. The system is a tool for builders to evaluate different water efficiency certification programs and decide which is the best fit for their current project. The matrix evaluates based on requirements, cost and is tailored to the project at hand.
NAHB changed the scope of the matrix to align with the requirements of NGBS 2025. The standard includes both new-builds and existing homes.
“Similar to the previous version, the matrix details how a Water Rating Index (WRI) score can be pursued independently from the NGBS Green certification,” said Amy Manz, Program Manager, Sustainability & Green Building at NAHB. “WRI assesses a property’s total indoor and outdoor water use compared to a code-minimum baseline. With a certified WRI score, a builder or developer can easily communicate overall water use with investors, prospective home buyers or renters, and local officials, which helps planners better understand overall water use in new developments.”
