| Overall Rating | Platinum |
|---|---|
| Overall Score | 88.13 |
| Liaison | Tonie Miyamoto |
| Submission Date | Nov. 7, 2022 |
Colorado State University
OP-21: Water Use
| Status | Score | Responsible Party |
|---|---|---|
|
6.00 / 6.00 |
Carol
Dollard Energy Engineer Facilities Management |
Level of ”Physical Risk Quantity” for the institution’s main campus as indicated by the World Resources Institute Aqueduct Water Risk Atlas:
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:
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 per square foot | 56.49 Gallons per square foot |
Percentage reduction in potable water use per unit of floor area from baseline:
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 per acre | 358,329.76 Gallons per acre |
Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
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:
Additional documentation to support the submission:
Data source(s) and notes about 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 or simply email your inquiry to stars@aashe.org.