Overall Rating Platinum
Overall Score 88.13
Liaison Tonie Miyamoto
Submission Date Nov. 7, 2022

STARS v2.2

Colorado State University
OP-21: Water Use

Status Score Responsible Party
Complete 6.00 / 6.00 Carol Dollard
Energy Engineer
Facilities Management
"---" 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:
High

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 479,142,880 Gallons 716,659,524 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 308,071,105 Gallons 468,273,082 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, 1999 June 30, 2000

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

FY00 was a drought year for Colorado and marked the beginning of a long-term commitment at CSU to better water management and conservation.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 7,407 5,343
Number of employees resident on-site 88 0
Number of other individuals resident on-site 765 0
Total full-time equivalent student enrollment 29,260 20,752.09
Full-time equivalent of employees 7,008 3,672
Full-time equivalent of students enrolled exclusively in distance education 6,127 2,878
Weighted campus users 25,244.50 17,495.32

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 12,203.49 Gallons 26,765.62 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
54.41

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 13,283,759 Gross Square Feet 8,289,985 Gross Square Feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 23.19 Gallons / GSF 56.49 Gallons / GSF

Percentage reduction in potable water use per unit of floor area from baseline:
58.94

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 2,050 Acres 2,000 Acres

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 233,728.23 Gallons / Acre 358,329.76 Gallons / Acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
34.77

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

The Eco Actions campaign encourages students to adopt sustainable behavior choices and includes several actions related to water conservation like taking shorter showers, never leaving water running while brushing teeth, and using reusable water bottles and water bottle filling stations to eliminate the use of disposable bottled water on campus.


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

Untreated raw water is used for irrigation on nearly all CSU properties. Therefore, the total water use & potable water use will not match.


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

CSU has made 1 pint/flush urinals & 1.28 gallon/flush toilets standard in all bathroom remodels.
CSU has worked for more than two decades to reduce their water use - particularly potable water. We have accomplished this by switching to low flow fixtures, reducing water demands of laboratory equipment (particularly autoclaves), and replacing once through cooling for lab and HVAC equipment with chilled water loops.


Website URL where information about the institution’s water conservation and efficiency efforts is available:
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Additional documentation to support 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.