Overall Rating	Gold
Overall Score	75.77
Liaison	Daryl Pierson
Submission Date	March 1, 2022

STARS v2.2

Portland State University
OP-21: Water Use

Status

Score

Responsible Party

4.00 / 4.00

Amanda Wolf
Program + Assessment Coordinator
Campus 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	305,051 Cubic meters	595,083.91 Cubic meters

Potable water use:

	Performance Year	Baseline Year
Potable water use	298,881.21 Cubic meters	595,083.91 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, 2018	June 30, 2019
Baseline Period	July 1, 2006	June 30, 2007

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:

Earliest year with data.

Figures needed to determine "Weighted Campus Users":

	Performance Year	Baseline Year
Number of students resident on-site	2,192	1,000
Number of employees resident on-site	9	30
Number of other individuals resident on-site	0	0
Total full-time equivalent student enrollment	20,083	15,639
Full-time equivalent of employees	2,710	2,098
Full-time equivalent of students enrolled exclusively in distance education	2,112	0
Weighted campus users	16,061	13,560.25

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	18.61 Cubic meters	43.88 Cubic meters

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

57.60

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	485,763.12 Gross square meters	442,402.14 Gross square meters

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	0.62 Cubic meters per square meter	1.35 Cubic meters per square meter

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

54.26

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

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	6.14 Hectares	5.74 Hectares

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	49,657.32 Cubic meters per hectare	103,701.39 Cubic meters per hectare

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

52.12

Optional Fields

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

EcoReps and Residential Outreach:
EcoRep projects have included signage regarding water use behavior in dorms/apartments and laundry rooms.

Climate Champions Program:
Question specifically asking about water conservation, providing staff with information and resources to help encourage water conservation practices.

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

Academic and Student Recreation Center (LEED Gold)*
Rain is harvested on the 5th floor and is collected in a holding tank on the first floor for use flushing toilets.

Engineering Building Hydrology Lab
Portland State University's Engineering Building, is equipped with a rainwater harvesting system that uses Oregon's average 38"" of annual rainfall to supplement the building's overall water demand. The system captures rain from the rooftop and diverts a portion through the rainwater harvesting system located in the hydrology lab on the 2nd floor. The water is stored in a 1000 gallon storage tank, filtered through carbon, and undergoes UV sterilization before being pumped to toilets and urinals on the 1st floor. In addition to conserving flush water and reducing rainwater runoff, this system also contributes to the university's engineering curriculum. Students use the rainwater harvesting system to study water usage rates, savings, filtration methods, and other aspects in an effort to advance this technology.

Stephen Epler Hall (LEED Silver)
Rainwater harvesting system to reduce need for potable water.

https://www.pdx.edu/sustainability/water

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

Green Revolving Fund Projects:
-Low flow fixture and installed aerators on sinks to reduce water usage in Millar Library, East Hall, and Cramer Hall

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

http://www.pdx.edu/sustainability/water

Additional documentation to support the submission:

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Data source(s) and notes about the submission:

Data not updated for FY20 due to CoVid. There are discrepancies between the PRE-5 numbers (which were updated for FY20) and OP-21 numbers, as all quantitative data for this credit was not updated for FY20 as CoVid erroneously affected our data and does not represent a sustained change.