Overall Rating	Gold
Overall Score	74.30
Liaison	Joséanne Bélanger-Gravel
Submission Date	Sept. 2, 2022

STARS v2.2

Polytechnique Montréal
OP-21: Water Use

Status

Score

Responsible Party

4.00 / 4.00

Joséanne Bélanger-Gravel
Sustainability Advisor
Sustainable Development Office

"---" 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	98,670 Cubic meters	303,693 Cubic meters

Potable water use:

	Performance Year	Baseline Year
Potable water use	93,345 Cubic meters	303,693 Cubic meters

Start and end dates of the performance year and baseline year (or three-year periods):

	Start Date	End Date
Performance Period	May 1, 2018	April 30, 2019
Baseline Period	June 1, 2004	May 31, 2005

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:

Year 2004-2005 is the baseline, it corresponds to the year just before opening the new Lassonde buildings, which are LEED Gold certified buildings. Since then, many efforts have been deployed to considerably decrease Polytechnique's water consumption.

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	0	0
Total full-time equivalent student enrollment	7,111.80	4,006.83
Full-time equivalent of employees	1,529.16	1,433.57
Full-time equivalent of students enrolled exclusively in distance education	0	0
Weighted campus users	6,480.72	4,080.30

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	14.40 Cubic meters	74.43 Cubic meters

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

80.65

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	120,316.90 Gross square meters	74,037 Gross square meters

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	0.78 Cubic meters per square meter	4.10 Cubic meters per square meter

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

81.09

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

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	0.50 Hectares	0.50 Hectares

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	197,340.38 Cubic meters per hectare	607,387.18 Cubic meters per hectare

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

67.51

Optional Fields

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

Since the PH probes were installed (2018-2019) on the neutralization tanks, a preventive maintenance program has been implemented for cleaning and checking these probes every 6 months. It has happened that the water inlet valve has been open for a long time due to some problem. An alarm has been programmed to notify the operator in place. In this way, he can react quickly and avoid wasting water. An alarm has also been programmed to notify the operator when the cooling towers water inlet valve is open for a long time. This signal can be an indication of the malfunction of the level probe or other.

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:

In the last 18 years, water consumption at Polytechnique has been reduced significantly. The main reason for this important decrease is the replacement of equipment by more efficient equipment (in terms of water consumption). New toilets have been installed, but some important changes also come from modifications in laboratory equipment or procedures, and from the installation of many new HVAC systems. When a change of equipment is needed, the efficiency in terms of water use is always considered.

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:

Water use data are supplied by the Energy and Water Sector Manager. For this section, we are using the flexibility offered by STARS to report older assessment and inventories due to the impact of COVID-19 pandemic. Data of year 2018-2019 have been chosen since this is the last complete year not affected by COVID-19 therefore it represents normal activities on campus. Furthermore, this choice is considered a conservative one since Polytechnique Montréal continuously improves its energy perfomances so year 2019-2020, 2020-2021 and 2021-2022 should have been more performant than year 2018-2019.

Weighted campus users number for this credit differs from the one in PRE-5 since PRE-5 data are based on the latest data available which was 2020-2021 at the date of submission. Year 2020-2021 present an exception since all the students were registered in distance education because of the COVID-19 pandemic measures implemented by the government of Quebec. Before the pandemic, no student were enrolled in distance education.