Yale University
OP-21: Water Use

• Documentation Fields
• Credit Info

Level of ”Physical Risk Quantity” for the institution’s main campus as indicated by the World Resources Institute Aqueduct Water Risk Atlas:
Total water withdrawal (potable and non-potable combined):

	Performance Year	Baseline Year
Total water withdrawal	500,297,528 Gallons	570,159,522 Gallons

Potable water use:

	Performance Year	Baseline Year
Potable water use	500,297,528 Gallons	570,159,522 Gallons

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

	Start Date	End Date
Performance Period	June 1, 2020	May 31, 2021
Baseline Period	June 1, 2012	May 31, 2013

A brief description of when and why the water use baseline was adopted:
Figures needed to determine "Weighted Campus Users":

	Performance Year	Baseline Year
Number of students resident on-site	2,434	4,679
Number of employees resident on-site	71	50
Number of other individuals resident on-site	73	150
Total full-time equivalent student enrollment	11,982.50	11,906
Full-time equivalent of employees	15,652	13,733
Full-time equivalent of students enrolled exclusively in distance education	0	0
Weighted campus users	21,425.13	20,561.50

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	23,350.97 Gallons	27,729.47 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
Gross floor area of building space:

	Performance Year	Baseline Year
Gross floor area	17,682,608 Gross square feet	16,200,000 Gross square feet

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	28.29 Gallons per square foot	35.20 Gallons per square foot

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

	Performance Year	Baseline Year
Vegetated grounds	325.70 Acres	325.70 Acres

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	1,536,068.55 Gallons per acre	1,750,566.54 Gallons per acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
A brief description of the institution's water-related behavior change initiatives:
A brief description of the institution's water recovery and reuse initiatives:
A brief description of the institution's initiatives to replace plumbing fixtures, fittings, appliances, equipment, and systems with water-efficient alternatives:
Website URL where information about the institution’s water conservation and efficiency efforts is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission: