Overall Rating Gold - expired
Overall Score 66.97
Liaison Alex Davis
Submission Date July 29, 2011
Executive Letter Download

STARS v1.0

Arizona State University
Tier2-3: Non-Potable Water Usage

Status Score Responsible Party
Complete 0.25 / 0.25 Betty Lombardo
University Sustainability Practices
"---" indicates that no data was submitted for this field

Does the institution use non-potable water (e.g., harvested rainwater or graywater) for irrigation and/or other applications?:

A brief description of the source of non-potable water and how it is used:
There is a water capture project program at the Arizona State University Tempe campus Central Plant. The project captures previously wasted reverse osmosis reject water for reuse on mall power-washing and central plant cooling tower chillers. Over 4,000,000 gallons of water are saved annually by re-using the Reverse Osmosis reject water. The Barrett Honors College Complex includes a greywater treatment and reuse system for buildings 7A and 7B. Greywater from building sinks, water fountains, and showers is treated to a reuse standard that is suitable as a water closet supply and/or an irrigation supply. The Greywater design flow is 10,000 gallons per day. The Biodesign Institute includes a Graywater Capture Project - The Biodesign Institute has realized a 50% reduction in landscape water use from the installation of a high efficiency drip irrigation system that is supplied by greywater captured on-site.

The website URL where information about the program, policy, or practice is available:

Data source(s) and notes about the submission:

The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.