The Water Efficiency Rating Score (WERS) is a tool for predicting water use in new and existing properties. The tool measures indoor water use, including water used in toilets, sinks, clothes washers, showers, and structural waste (water that is wasted when waiting for water to heat up), and scores water use performance on a scale from 0 to 100 (0 being the desired performance). The goal of the tool is to provide validated water use performance scores in order to encourage water conservation efforts.
