Overall Rating Gold
Overall Score 71.75
Liaison Cindy Shea
Submission Date July 24, 2017
Executive Letter Download

STARS v2.1

University of North Carolina at Chapel Hill
OP-22: Water Use

Status Score Responsible Party
Complete 4.03 / 5.00 Margaret Holton
Water, Wastewater & Stormwater Manager
ES Water/Sewer
"---" indicates that no data was submitted for this field

Level of ”Physical Risk QUANTITY” for the institution’s main campus as indicated by the World Resources Institute’s Aqueduct Water Risk Atlas:
Medium to High

Total water use (potable and non-potable combined):
Performance Year Baseline Year
Total water use --- 760,911,000 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 453,535,000 Gallons 760,911,000 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Year July 1, 2015 June 30, 2016
Baseline Year July 1, 1999 June 30, 2000

A brief description of when and why the water use baseline was adopted:

The campus suffered a severe drought in 2001/2002 and instituted aggressive and ongoing water conservation measures as a result.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 8,498 6,754
Number of employees resident on-site 17 0
Number of other individuals resident on-site and/or staffed hospital beds 0 0
Total full-time equivalent student enrollment 27,518 21,921.67
Full-time equivalent of employees (staff + faculty) 12,213.24 9,591
Full-time equivalent of students enrolled exclusively in distance education 1,887 271.50
Weighted campus users 30,511.93 25,119.38

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 14,864.19 Gallons 30,291.79 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
50.93

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 18,943,498 Gross Square Feet 11,685,234 Gross Square Feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 23.94 Gallons / GSF 65.12 Gallons / GSF

Percentage reduction in potable water use per unit of floor area from baseline:
63.23

Does the institution wish to pursue Part 3 of this credit? (reductions in total water use per acre/hectare of vegetated grounds):
Yes

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 565 Acres 559.50 Acres

Total water use (potable + non-potable) per unit of vegetated grounds:
Performance Year Baseline Year
Total water use per unit of vegetated grounds 0 Gallons / Acre 1,359,983.91 Gallons / Acre

Percentage reduction in total water use per unit of vegetated grounds from baseline:
---

A brief description of the institution's water-related behavior change initiatives, e.g. initiatives to shift individual attitudes and practices such as signage and competitions:

Pervasive signage in residence halls, office buildings, and classroom buildings.


A brief description of the institution's water recovery and reuse initiatives:

UNC uses non-potable water from multiple sources including: reclaimed water from the local water and sewer authority, harvested rainwater stored in cisterns, and collected condensate.

The Energy Services Chilled Water utility is the largest user of non-potable water at UNC. Non-potable water (primarily reclaimed water) is used for cooling tower make-up water at the five, central chilled water plants on campus.

The FedEx Global Education Center, NC Botanical Garden Visitor Center, and Genome Sciences Building have non-potable water toilet and urinal flushing systems.

Both above and below ground cisterns store clean rainwater that is harvested to flush toilets and irrigate landscapes. These include the football practice fields, Fetzer Field, Boshamer Stadium (baseball). When rainwater is insufficient, reclaimed wastewater from OWASA provides a non-potable backup.


A brief description of the institution's initiatives to replace plumbing fixtures, fittings, appliances, equipment, and systems with water-efficient alternatives (e.g. building retrofits):

Water saving toilets, sinks, showers, and urinals are specified in new building projects and renovations. During the 2001/2002 and 2007/2008 droughts significant investments were made in a variety of water consuming technologies.


The website URL where information about the programs or initiatives is available:
Additional documentation to support 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 and complete the Data Inquiry Form.