HERSH2O(R) is a whole-house water efficiency rating for new and existing homes. Utilities and government agencies can use HERSH2O as an incentive program that promotes specific levels of water savings. By quantifying indoor and outdoor use, these incentive programs can target the most important areas for water efficiency in your region.
HERSH2O is based on an accredited ANSI Standard and used by builders to achieve the WaterSense Label for Homes. Details at https://www.resnet.us/about/hersh2o