Overall Rating Bronze - expired
Overall Score 37.67
Liaison Trina Larson
Submission Date March 1, 2019
Executive Letter Download

STARS v2.1

Chandler-Gilbert Community College
OP-22: Water Use

Status Score Responsible Party
Complete 6.00 / 6.00 Sara Haidle
Sustainability Project Assistant
Administration
"---" 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:
High

Total water use (potable and non-potable combined):
Performance Year Baseline Year
Total water use 40,043,400 Gallons 39,137,956 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 14,717,400 Gallons 26,945,956 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Year July 1, 2016 June 30, 2017
Baseline Year July 1, 2009 June 30, 2010

A brief description of when and why the water use baseline was adopted:
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Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 0 0
Number of employees resident on-site 0 0
Number of other individuals resident on-site and/or staffed hospital beds 0 0
Total full-time equivalent student enrollment 7,968 6,464.90
Full-time equivalent of employees (staff + faculty) 558 430
Full-time equivalent of students enrolled exclusively in distance education 1,055 520
Weighted campus users 5,603.25 4,781.17

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 2,626.58 Gallons 5,635.84 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
53.40

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 667,239 Gross square feet 561,064 Gross square feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 22.06 Gallons per square foot 48.03 Gallons per square foot

Percentage reduction in potable water use per unit of floor area from baseline:
54.07

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 12.15 Acres 5.63 Acres

Total water use (potable + non-potable) per unit of vegetated grounds:
Performance Year Baseline Year
Total water use per unit of vegetated grounds 3,295,753.09 Gallons per acre 6,951,679.57 Gallons per acre

Percentage reduction in total water use per unit of vegetated grounds from baseline:
52.59

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:
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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 (e.g. building retrofits):

We have replaced our old toilets, from 4.5 gallons per flush to 1.5 gallons. Our new urinals also led to a 50% decrease in water use. We will soon be deploying an acid treatment in the cooling towers (which are the largest water user after irrigation) that will reduce water use significantly. This acid treatment will be applied in cooling towers at both sites, one that uses reclaimed water and one that uses potable water. This winter 2018 we will be replacing one chiller with a more energy and water efficient unit.


The website URL where information about the programs or initiatives is available:
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Additional documentation to support the submission:
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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.