Overall Rating Silver
Overall Score 60.54
Liaison Alex Miller
Submission Date March 6, 2020
Executive Letter Download

STARS v2.1

Carleton College
OP-22: Water Use

Status Score Responsible Party
Complete 0.86 / 4.00 Alexandra Miller
Sustainability Program Coordinator
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’s Aqueduct Water Risk Atlas:
Low

Total water use (potable and non-potable combined):
Performance Year Baseline Year
Total water use 49,826,827 Gallons 44,067,629 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 46,920,444 Gallons 41,161,246 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Year July 1, 2018 June 30, 2019
Baseline Year Jan. 1, 2014 Dec. 30, 2014

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

2008 was the first year we started (reliably) tracking our greenhouse gas emissions, so it serves as the baseline year for our Climate Action Plan. We were collecting data in calendar years up until FY19 we shifted to collect in fiscal years.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 1,790 1,821
Number of employees resident on-site 26 5
Number of other individuals resident on-site and/or staffed hospital beds 0 0
Total full-time equivalent student enrollment 2,097 1,821
Full-time equivalent of employees (staff + faculty) 712 740
Full-time equivalent of students enrolled exclusively in distance education 0 0
Weighted campus users 2,560.75 2,377.25

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 18,322.93 Gallons 17,314.65 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
0

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 2,065,165 Gross Square Feet 1,460,055 Gross Square Feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 22.72 Gallons / GSF 28.19 Gallons / GSF

Percentage reduction in potable water use per unit of floor area from baseline:
19.41

Does the institution wish to pursue Part 3 of this credit? (reductions in total water use per acre/hectare of vegetated grounds):
Yes

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 1,005 Acres 1,005 Acres

Total water use (potable + non-potable) per unit of vegetated grounds:
Performance Year Baseline Year
Total water use per unit of vegetated grounds 49,578.93 Gallons / Acre 43,848.39 Gallons / Acre

Percentage reduction in total water use per unit of vegetated grounds from baseline:
0

A brief description of the institution's water-related behavior change initiatives, e.g. initiatives to shift individual attitudes and practices such as signage and competitions:
---

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 (e.g. building retrofits):

The majority of residence hall faucets have been replaced with low flow faucets. Funding for part of this initiative came from the student Sustainability Revolving Fund.


The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
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Although we don't have a formal stated commitment, Carleton has implemented numerous water use reduction measures including:
- low-flow showerheads in residence halls
- targeted irrigation practices
- water consumption monitor and annual water reduction competition
- elimination of bottled water from athletics packs.

Potable numbers for this year were calculated from the Sightlines Data. Additional water use was from non-potable irrigation wells (data provided by Grounds Manager, 2,906,383 gallons).

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 and complete the Data Inquiry Form.