Overall Rating Gold
Overall Score 78.11
Liaison Kristin Larson
Submission Date Oct. 23, 2023

STARS v2.2

San Diego State University
OP-21: Water Use

Status Score Responsible Party
Complete 4.80 / 5.00 Madeline Falco
Energy and Sustainability Analyst
Office of Energy and 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

Part 1. Reduction in potable water use per person 

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 172,296,038 Gallons 230,052,724.30 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 172,296,038 Gallons 230,052,724.30 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period July 1, 2021 June 30, 2022
Baseline Period July 1, 2013 June 30, 2014

If end date of the baseline year/period is 2004 or earlier, provide:

A brief description of when and why the water use baseline was adopted:
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Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 8,000 2,848
Number of employees resident on-site 35 73
Number of other individuals resident on-site 0 0
Total full-time equivalent student enrollment 33,402 29,158
Full-time equivalent of employees 4,103 3,648
Full-time equivalent of students enrolled exclusively in distance education 0 0
Weighted campus users 30,137.50 25,334.75

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 5,717.00 Gallons 9,080.52 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
37.04

Part 2. Reduction in potable water use per unit of floor area

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 6,659,922 Gross square feet 5,222,304 Gross square feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 25.87 Gallons per square foot 44.05 Gallons per square foot

Percentage reduction in potable water use per unit of floor area from baseline:
41.27

Part 3. Reduction in total water withdrawal per unit of vegetated grounds 

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 218 Acres 214 Acres

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 790,348.80 Gallons per acre 1,075,012.73 Gallons per acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
26.48

Optional Fields 

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:
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A brief description of the institution's initiatives to replace plumbing fixtures, fittings, appliances, equipment, and systems with water-efficient alternatives:
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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:
SDSU has implemented an Energy Information System, SkySpark, that is pull in every water meter on campus. The total water use for the performance year includes potable and non-potable combined from the main campus only (not the Imperial Valley Campuses, Calexico and Brawley). Additionally, we've implemented interactive energy dashboard around campus showing the water usage by building.

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.