| Overall Rating | Gold |
|---|---|
| Overall Score | 80.87 |
| Liaison | Megan Butler |
| Submission Date | Jan. 26, 2024 |
Macalester College
OP-21: Water Use
| Status | Score | Responsible Party |
|---|---|---|
|
2.72 / 4.00 |
Nathan
Lief Facilities Director Facilities |
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 | 28,898,745 Gallons | 30,780,096 Gallons |
Potable water use:
| Performance Year | Baseline Year | |
| Potable water use | 18,190,200 Gallons | 24,189,337 Gallons |
Start and end dates of the performance year and baseline year (or three-year periods):
| Start Date | End Date | |
| Performance Period | June 1, 2022 | May 31, 2023 |
| Baseline Period | June 1, 2014 | May 31, 2015 |
A brief description of when and why the water use baseline was adopted:
2014 is when the Energy Manager position was created and all energy savings are compared to that base year.
Figures needed to determine "Weighted Campus Users":
| Performance Year | Baseline Year | |
| Number of students resident on-site | 1,247 | 1,293 |
| Number of employees resident on-site | 7 | 14 |
| Number of other individuals resident on-site | 0 | 0 |
| Total full-time equivalent student enrollment | 2,154 | 2,020 |
| Full-time equivalent of employees | 661 | 591 |
| Full-time equivalent of students enrolled exclusively in distance education | 0 | 0 |
| Weighted campus users | 2,424.75 | 2,285 |
Potable water use per weighted campus user:
| Performance Year | Baseline Year | |
| Potable water use per weighted campus user | 7,501.89 Gallons | 10,586.14 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 | 1,504,107 Gross square feet | 1,482,248 Gross square feet |
Potable water use per unit of floor area:
| Performance Year | Baseline Year | |
| Potable water use per unit of floor area | 12.09 Gallons per square foot | 16.32 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 | 11 Acres | 11 Acres |
Total water withdrawal per unit of vegetated grounds:
| Performance Year | Baseline Year | |
| Total water withdrawal per unit of vegetated grounds | 2,627,158.64 Gallons per acre | 2,798,190.55 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:
Where low flow aerators were installed, there are small cards drawing attention to the fact that the aerators were installed to reduce water consumption.
One resident hall and one house owned by the College have water consumption metered and is accessible to occupants.
A brief description of the institution's water recovery and reuse initiatives:
We capture rainwater from a parking lot then hold it in a rain garden while it is being filtered, which eventually waters trees and other landscaping.
New rain gardens were added with the construction of the new Theater building.
A brief description of the institution's initiatives to replace plumbing fixtures, fittings, appliances, equipment, and systems with water-efficient alternatives:
In July 2019 we replaced (886) 2.0 & 2.5 GPM faucet aerators in buildings across campus with 1.0 & 1.5 GPM aerators.
In addition to the Leonard Center shower heads, in 2017 we replaced (266) 2.5 GPM shower heads in the residence halls and houses with 2.0 GPM shower heads
In 2020, new updated irrigation controllers were installed to reduce the amount of water needed to maintain the vegetation on campus.
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.