Overall Rating	Silver
Overall Score	64.62
Liaison	Sarah Fortner
Submission Date	March 3, 2022

STARS v2.2

Carleton College
OP-21: Water Use

Status

Score

Responsible Party

3.99 / 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 Aqueduct Water Risk Atlas:

Low

Part 1. Reduction in potable water use per person

Total water withdrawal (potable and non-potable combined):

	Performance Year	Baseline Year
Total water withdrawal	30,955,159 Gallons	44,067,629 Gallons

Potable water use:

	Performance Year	Baseline Year
Potable water use	26,225,962 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 Period	July 1, 2020	June 30, 2021
Baseline Period	Jan. 1, 2014	Dec. 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:

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	1,449	1,821
Number of employees resident on-site	23	5
Number of other individuals resident on-site	0	0
Total full-time equivalent student enrollment	1,918	1,821
Full-time equivalent of employees	817	740
Full-time equivalent of students enrolled exclusively in distance education	274	0
Weighted campus users	2,213.75	2,377.25

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	11,846.85 Gallons	17,314.65 Gallons

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

31.58

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	2,069,322 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	12.67 Gallons per square foot	28.19 Gallons per square foot

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

55.04

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

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	1,005 Acres	1,005 Acres

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	30,801.15 Gallons per acre	43,848.39 Gallons per acre

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

29.76

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:

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.

Website URL where information about the institution’s water conservation and efficiency efforts is available:

https://apps.carleton.edu/sustainability/campus/water/

Additional documentation to support the submission:

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Data source(s) and notes about the submission:

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).

Few people on campus during FY21 due to COVID-19 work-from-home.