Overall Rating Gold
Overall Score 70.91
Liaison Lindsay Walker
Submission Date Oct. 24, 2019

STARS v2.2

Humber College
OP-21: Water Use

Status Score Responsible Party
Complete 3.77 / 4.00 Lindsay Walker
Sustainability Manager
Facilities Management
"---" 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 136,649.58 Cubic Metres 181,676.97 Cubic Metres

Potable water use:
Performance Year Baseline Year
Potable water use 136,649.58 Cubic Metres 181,676.97 Cubic Metres

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period April 1, 2018 March 31, 2019
Baseline Period April 1, 2005 March 31, 2006

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 1,706 1,445
Number of employees resident on-site 0 0
Number of other individuals resident on-site 0 0
Total full-time equivalent student enrollment 31,753 18,312
Full-time equivalent of employees 3,069 1,755
Full-time equivalent of students enrolled exclusively in distance education 204 173
Weighted campus users 26,390 15,281.75

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 5.18 Cubic Metres 11.89 Cubic Metres

Percentage reduction in potable water use per weighted campus user from baseline:
56.44

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 326,829 Gross Square Metres 185,924.82 Gross Square Metres

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 0.42 Cubic Metres / GSM 0.98 Cubic Metres / GSM

Percentage reduction in potable water use per unit of floor area from baseline:
57.21

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 3.35 Hectares 3.35 Hectares

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 40,826.34 Cubic Metres / Hectare 54,279.02 Cubic Metres / Hectare

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
24.78

A brief description of the institution's water-related behavior change initiatives:

Humber has invested in retrofitting existing water fountains with sensor activated water bottle refilling stations. The stations are also included in new construction. The new fountains allow students and staff to have easy access to safe, clean drinking water and reduces the amount of waste from plastic water bottles.


A brief description of the institution's water recovery and reuse initiatives:

Humber's greenhouse has two large rainwater collection tanks and the Centre for Urban Ecology building has a 10,000 litre cistern. Rainwater collected is used for greenhouse operations and surrounding gardens.


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

Examples of water efficiency projects at Humber College:

• replaced 17, 6LPF toilets with 3LPF water-efficient models in one student Residence building
• upgraded existing 2.5 gpm flowrate showerheads to 1.5 gpm in one student Residence building
• replaced water-cooled equipment with DX units


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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It seems that the vegetated grounds information for 2016 included the Humber Arboretum, which is actually not part of Humber, hence it was a mistake. The vegetated grounds # was recalculated for this year, and the baseline year was updated.

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.