Overall Rating Gold - expired
Overall Score 70.54
Liaison Tavey Capps
Submission Date Oct. 18, 2013
Executive Letter Download

STARS v1.2

Duke University
OP-T2-46: Non-Potable Water Usage

Status Score Responsible Party
Complete 0.25 / 0.25 Tavey Capps
Environmental Sustainability Director
Office of the Executive Vice President
"---" 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?:
Yes

A brief description of the source of non-potable water and how it is used:

Condensation in University, Medical Center and Health System cooling systems is reclaimed for use in Duke's Chilled Water Plant's cooling towers. Cooling tower blowdown water is sent through an RO system and reused in cooling towers.

Water from the Asiatic Arboretum pond in Sarah P. Duke Gardens is used to water seasonal plants in the terrace beds of the Gardens. Additionally, in the Charlotte Brody Discovery Garden at Duke Gardens, rainwater is collected to water the surrounding landscape. Duke Gardens staff have also hosted workshops focused on rainwater harvesting at home.

The Fitzpatrick Center for Interdisciplinary Engineering, Medicine and Applied Sciences (FCIEMAS), which opened in 2004, has a 70,000-gallon cistern underground to collect rainwater that is used to irrigate the nearly two-acre complex.

Duke has multiple cisterns installed across campus that collectively hold approximately 260,000 gallons of stormwater. Water from cisterns is used primarily for irrigation.

All irrigation water used on Duke's golf course is non-potable stormwater, which is collected from ponds on site.


The percentage of irrigation water usage from recovered, reclaimed or untreated sources :
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The percentage of building space using water from recovered, reclaimed or untreated sources:
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The percentage of water used in utility plants from recovered, reclaimed or untreated sources:
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The website URL where information about the program, policy, or practice is available:
Data source(s) and notes about the submission:
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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.