Overall Rating Silver
Overall Score 59.82
Liaison Joanne Wong
Submission Date Feb. 10, 2021

STARS v2.2

Mills College
OP-21: Water Use

Status Score Responsible Party
Complete 2.67 / 4.00 Luan Stauss
Facilities Manager
Campus Facilities
"---" 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 to Medium

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 34,958,535 Gallons 45,184,436 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 21,944,824 Gallons 45,184,436 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period July 1, 2018 June 30, 2019
Baseline Period July 1, 2008 June 30, 2009

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

FY2009, the year before the implementation of using lake water for landscape irrigation.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 523 586
Number of employees resident on-site 19 18
Number of other individuals resident on-site 57 0
Total full-time equivalent student enrollment 1,081 1,406
Full-time equivalent of employees 336 419.84
Full-time equivalent of students enrolled exclusively in distance education 5 0
Weighted campus users 1,251.50 1,520.38

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 17,534.82 Gallons 29,719.17 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
41.00

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 882,581 Gross square feet 955,269 Gross square feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 24.86 Gallons per square foot 47.30 Gallons per square foot

Percentage reduction in potable water use per unit of floor area from baseline:
47.43

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 64.50 Acres 114 Acres

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 541,992.79 Gallons per acre 396,354.70 Gallons per acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
-36.74

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:

Mills College hosts two LEED certified buildings: the Lokey Graduate School of Business and the Moore Natural Sciences Buidling. Both buildings include rainwater harvesting systems that collect water that is used to flush the toilets. Mills maintains Lake Aliso on campus, utilizing excess water to irrigate landscaping.


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

Low flow shower heads have been installed in all of the residence halls. Whenever there is a retrofit for restrooms, low flow toilets are installed.


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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Data source(s) and notes about 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.