Overall Rating Gold
Overall Score 67.00
Liaison Cindy Shea
Submission Date Nov. 13, 2024

STARS v3.0

University of North Carolina at Chapel Hill
OP-3: Water Use

Status Score Responsible Party
Complete 4.11 / 7.00 Jamie Smedso
Water Resources Manager
Energy Services
"---" indicates that no data was submitted for this field

3.1 Potable water use per person

Level of water quantity risk for the institution’s main campus:
High

Performance year for water use:
2023

Peer group:
Doctoral universities and research institutions

Potable water from off-site sources:
1,438,880 Cubic meters

Reclaimed water from off-site sources:
725,866 Cubic meters

Other off-site water sources:
0 Cubic meters

Potable water from on-site sources:
0 Cubic meters

Other on-site water sources:
0 Cubic meters

Full-time equivalent student enrollment:
29,407

Full-time equivalent of employees:
12,772

The Reporting Tool will automatically calculate the following four figures:

Annual potable water use:
1,438,880 Cubic meters

Full-time equivalent students and employees:
42,179

Annual potable water use per person:
34,113.66 Liters

Points earned for indicator OP 3.1:
0.97

3.2 Potable water use per square meter

Gross floor area of building space:
1,791,673 Square meters

The Reporting Tool will automatically calculate the following two figures:

Annual potable water use per unit of floor area:
803.09 Liters per square meter

Points earned for indicator OP 3.2:
1.47

3.3 Systems for water recovery and return

Does the institution harvest rainwater on-site for storage and use?:
Yes

Narrative and/or website URL providing an overview of the institution’s on-site rainwater harvesting systems:
Does the institution recover water on-site for reuse?:
Yes

Narrative and/or website URL providing an overview of the institution’s on-site water recovery and reuse systems:

HVAC condensate is collected at the Koury Oral Health Sciences Building and is used for irrigation. 

The water is stored in a 58,000 gallon underground concrete vault.


Does the institution collect and return water to surface water or groundwater through on-site green infrastructure?:
Yes

Narrative and/or website URL providing an overview of the institution’s on-site green infrastructure:

UNC has over 300 stormwater control measures, including 48 biorention cells (ie raingardens), 4 stormwater wetlands, 9 green roofs, 15 installations of permeable pavement, and 16 stormwater infiltration beds. The primary stormwater control measures capture rainwater and remove pollutants prior to discharging to the stormwater drainage system. All of these SCMs are designed to treat local stormwater, on-site, and reduce the peak discharge volume of stormwater through infiltration and evapotranspiration. 

https://ehs.unc.edu/topics/stormwater/projects/  gives examples of some unique stormwater control measures.

 


The Reporting Tool will automatically calculate the following figure:

Points earned for indicator OP 3.3:
1

3.4 Ratio of water recovered/returned to total water withdrawal 

Does the institution have methodologies in place to estimate or model the annual volume of water recovered and/or returned on-site?:
No

Narrative outlining the methodologies used to estimate or model the annual volume of water recovered and/or returned on-site:
---

Estimated volume of rainwater harvested on-site for storage and use:
---

Estimated volume of water recovered on-site for reuse:
---

Estimated volume of water collected and returned through on-site green infrastructure:
---

The Reporting Tool will automatically calculate the following four figures:

Annual volume of water recovered and/or returned:
725,866 Cubic meters

Total water withdrawal:
2,164,746 Cubic meters

Ratio of water recovered/returned to total water withdrawal:
0.34

Points earned for indicator OP 3.4:
0.67

Optional documentation

Notes about the information provided for this credit:
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Additional documentation for this credit:
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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.