Overall Rating Gold - expired
Overall Score 65.15
Liaison Amber Saxton
Submission Date Jan. 8, 2021

STARS v2.2

George Mason University
OP-21: Water Use

Status Score Responsible Party
Complete 4.26 / 5.00 Greg Farley
Director of Sustainability
University Sustainability
"---" 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 Aqueduct Water Risk Atlas:
Medium to High

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 142,777,000 Gallons 133,082,000 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 142,777,000 Gallons 133,082,000 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period July 1, 2018 June 30, 2019
Baseline Period July 1, 2004 June 30, 2005

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

The 2005 water baseline was adopted based on its relation to the energy performance contracts completed by Siemens. The baseline is before the energy contracts were implemented.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 6,612 3,840
Number of employees resident on-site 17 0
Number of other individuals resident on-site 12 0
Total full-time equivalent student enrollment 31,272.20 21,950
Full-time equivalent of employees 4,731.60 2,997.40
Full-time equivalent of students enrolled exclusively in distance education 1,634 0
Weighted campus users 27,446.60 19,670.55

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 5,201.99 Gallons 6,765.55 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
23.11

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 8,841,372 Gross square feet 5,015,746 Gross square feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 16.15 Gallons per square foot 26.53 Gallons per square foot

Percentage reduction in potable water use per unit of floor area from baseline:
39.14

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 357.72 Acres 255 Acres

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 399,130.60 Gallons per acre 521,890.20 Gallons per acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
23.52

A brief description of the institution's water-related behavior change initiatives:
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A brief description of the institution's water recovery and reuse initiatives:

On the Fairfax campus, the irrigation system has sensors that register when there is rainfall; thus water less if at all. While at the Science and Technology campus, the irrigation system evaluates local weather data. Mason's Child Development Center Garden has an irrigation system from Water Management, Inc. The irrigation system utilizes rainwater to water the garden.


A brief description of the institution's initiatives to replace plumbing fixtures, fittings, appliances, equipment, and systems with water-efficient alternatives:

Since 2005, Mason has initiated two energy savings performance contracts where heating, ventilation, and air conditioning equipment were upgraded along with lighting and water fixtures. Mason also follows Virginia state policy which states that all new buildings should be built to LEED Silver or equivalent. Mason's Design Information Manual also prioritizes water saving infrastructure when constructing new buildings.


Website URL where information about the institution’s water conservation and efficiency efforts is available:
Additional documentation to support the submission:
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Data source(s) and notes about the submission:
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