Overall Rating	Gold
Overall Score	73.38
Liaison	Brandon Trelstad
Submission Date	Dec. 9, 2022

STARS v2.2

Oregon State University
OP-21: Water Use

Status

Score

Responsible Party

2.99 / 4.00

Leticia Cavazos
Sustainability Program Specialist
Sustainability 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 to Medium

Part 1. Reduction in potable water use per person

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

	Performance Year	Baseline Year
Total water withdrawal	803,249.63 Cubic meters	1,011,571.27 Cubic meters

Potable water use:

	Performance Year	Baseline Year
Potable water use	803,249.63 Cubic meters	1,011,571.27 Cubic meters

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

	Start Date	End Date
Performance Period	July 1, 2021	June 30, 2022
Baseline Period	July 1, 2004	June 30, 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:

2005 is the first year in which we have comprehensive data for this credit.

Figures needed to determine "Weighted Campus Users":

	Performance Year	Baseline Year
Number of students resident on-site	4,960	3,253
Number of employees resident on-site	15	16
Number of other individuals resident on-site	0	0
Total full-time equivalent student enrollment	27,575	18,055
Full-time equivalent of employees	5,518	4,208.20
Full-time equivalent of students enrolled exclusively in distance education	7,962	556
Weighted campus users	20,092	17,097.65

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	39.98 Cubic meters	59.16 Cubic meters

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

32.43

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	982,096.66 Gross square meters	635,392.32 Gross square meters

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	0.82 Cubic meters per square meter	1.59 Cubic meters per square meter

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

48.63

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

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	61.23 Hectares	71.43 Hectares

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	13,118.80 Cubic meters per hectare	14,162.32 Cubic meters per hectare

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

7.37

Optional Fields

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

Some residence halls have included signage and done other programming to encourage occupants to reduce shower time, brush teeth without running water and take other small, easy steps to conserve water. A few wet labs also encourage water conservation by various means, but no formal, central campaigns recur.

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

Rainwater is collected then organically & mechanically filtered, treated, and stored at Kelley Engineering, in a 16,500 gallon chemical-free cistern system. This system is used to flush toilets and urinals rather than using potable water. OSU currently does not have any reuse activities.

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

High efficiency restroom fixtures are the campus standard. Additionally, the Sustainability Office has retrofitted hundreds of sinks with 0.5 GPM aerators.

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

http://fa.oregonstate.edu/sustainability/operations/water

Additional documentation to support the submission:

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Data source(s) and notes about the submission:

The figure used for square footage was changed to reflect Corvallis area operations, not university totals, which have been used in the past. Water data is not gathered from each statewide operation, making the Corvallis area square footage a more relevant boundary.