801 Indoor and Outdoor Water Use – Above Green

Intent

Implement measures that reduce indoor and outdoor water usage. Implement measures that include collection and use of alternative sources of water. Implement measures that treat water on site.

801.1 - Mandatory requirements

The building shall comply with Section 11.802 (Prescriptive Path) and 11.803 (Innovative Practices) or Section 305.2.6.1 (Performance Path). Points from Section 305.2.6.1 (Performance Path) shall not be combined with points from Section 11.802 (Prescriptive Path) or Section 11.803 (Innovative Practices). The mandatory provisions of Section 11.802 (Prescriptive Path) are required when using Section 305.2.6.1 (Performance Path) for Chapter 11.8 Water Efficiency compliance.

305.2.6.1

Water consumption reduction path. The water efficiency rating level shall be based on the reduction in water consumption resulting from the remodel in accordance with Table 305.2.6.1.

Water consumption shall be based on the estimated annual use as determined by a third-party audit and analysis or use of utility consumption data. The reduction shall be the percentage difference between the consumption before and after the remodel calculated as follows:

[(consumption before remodel - consumption after remodel)/consumption before remodel]*100%

The occupancy and lifestyle assumed and the method of making the water consumption estimates shall be the same for estimates before and after the remodel. The building configuration for the after-remodel estimate shall include any changes to the configuration of the building such as additions or new points of water use. For multifamily buildings, the water consumption shall be based on the entire building including all dwelling units and common areas.

Where a building can demonstrate through documentation approved by the Adopting Entity that the remodel activities started prior to project registration, the water baseline (consumption before remodel) shall be calculated based on data and building systems that existed in the building up to 3 years prior to project registration.

Required Documentation

Completed optional green remodel calculator or other (Excel or PDF) analysis showing before and after energy use. Utility bills and/or energy model complying with Energy Efficiency Model Policy.