Iowa State University
OP-22: Water Use

• Documentation Fields
• Credit Info

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

	Performance Year	Baseline Year
Total water use	---	639,227,463 Gallons

Potable water use:

	Performance Year	Baseline Year
Potable water use	324,130,854 Gallons	355,732,763 Gallons

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

	Start Date	End Date
Performance Year	July 1, 2015	June 30, 2016
Baseline Year	July 1, 2011	June 30, 2012

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	12,667	9,886
Number of employees resident on-site	1	1
Number of other individuals resident on-site and/or staffed hospital beds	1	1
Total full-time equivalent student enrollment	34,347	29,991
Full-time equivalent of employees (staff + faculty)	6,134	5,704
Full-time equivalent of students enrolled exclusively in distance education	2,196	1,469
Weighted campus users	31,881.75	28,142.25

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	10,166.66 Gallons	12,640.52 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	12,991,234 Gross square feet	12,417,403 Gross square feet

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	24.95 Gallons per square foot	28.65 Gallons per square foot

Percentage reduction in potable water use per unit of floor area from baseline:
Does the institution wish to pursue Part 3 of this credit? (reductions in total water use per acre/hectare of vegetated grounds):
Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	---	200 Acres

Total water use (potable + non-potable) per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water use per unit of vegetated grounds	---	3,196,137.32 Gallons per acre

Percentage reduction in total water use per unit of vegetated grounds from baseline:
A brief description of the institution's water-related behavior change initiatives, e.g. initiatives to shift individual attitudes and practices such as signage and competitions:
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 (e.g. building retrofits):
The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission: