Overall Rating Gold
Overall Score 70.87
Liaison Daimon Eklund
Submission Date Dec. 23, 2021

STARS v2.2

University of Washington, Seattle
OP-21: Water Use

Status Score Responsible Party
Complete 2.63 / 5.00
"---" 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:
Medium to High

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 2,070,981.24 Cubic meters 1,899,164.92 Cubic meters

Potable water use:
Performance Year Baseline Year
Potable water use 2,070,981.24 Cubic meters 1,899,164.92 Cubic meters

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period Jan. 1, 2019 Dec. 31, 2019
Baseline Period Jan. 1, 2005 Dec. 31, 2005

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 9,729 4,894
Number of employees resident on-site 20 10
Number of other individuals resident on-site 683 380
Total full-time equivalent student enrollment 54,277 32,403
Full-time equivalent of employees 18,307 23,215
Full-time equivalent of students enrolled exclusively in distance education 893 269
Weighted campus users 56,888.50 43,117.75

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 36.40 Cubic meters 44.05 Cubic meters

Percentage reduction in potable water use per weighted campus user from baseline:
17.35

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 2,198,256.48 Gross square meters 1,265,183.71 Gross square meters

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 0.94 Cubic meters per square meter 1.50 Cubic meters per square meter

Percentage reduction in potable water use per unit of floor area from baseline:
37.24

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 98.06 Hectares 98.38 Hectares

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 21,120.56 Cubic meters per hectare 19,304.58 Cubic meters per hectare

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
-9.41

A brief description of the institution's water-related behavior change initiatives:
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A brief description of the institution's water recovery and reuse initiatives:
UW's Green Building Standards requires major capital projects to be designed to achieve at least 50% reduction for indoor and outdoor potable water use as compared to current code as a baseline. As a result, the recently completed Hans Rosling Center for Population Health installed a large rainwater cistern to recover water that is subsequently used for flushing of urinals and water closets as well as subsurface irrigation.

A brief description of the institution's initiatives to replace plumbing fixtures, fittings, appliances, equipment, and systems with water-efficient alternatives:
UW's Green Building Standards requires major capital projects to be designed to achieve at least 50% reduction for indoor and outdoor potable water use as compared to current code as a baseline. As a result, major capital projects that renovate areas on campus often replace existing plumbing fixtures with low-flow fixtures.

Website URL where information about the institution’s water conservation and efficiency efforts is available:
Additional documentation to support the submission:
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Data source(s) and notes about the submission:
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