Overall Rating	Gold - expired
Overall Score	68.39
Liaison	Marianne Martin
Submission Date	Sept. 22, 2021

STARS v2.2

University of Colorado Boulder
OP-21: Water Use

Status

Score

Responsible Party

3.33 / 5.00

Jonathan Akins
Campus Civil Engineer
Facilities Management

"---" 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

Part 1. Reduction in potable water use per person

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

	Performance Year	Baseline Year
Total water withdrawal	391,743,000 Gallons	413,695,000 Gallons

Potable water use:

	Performance Year	Baseline Year
Potable water use	260,750,000 Gallons	313,695,000 Gallons

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	July 1, 2007	June 30, 2008

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:

In 2001-2002, CU used approximately 400 Mgal per year of water. Since then, CU has reduced water consumption because of the drought conditions we are experiencing, and because water has a large carbon footprint.

Figures needed to determine "Weighted Campus Users":

	Performance Year	Baseline Year
Number of students resident on-site	9,390	6,653
Number of employees resident on-site	26	23
Number of other individuals resident on-site	500	500
Total full-time equivalent student enrollment	33,608	25,978
Full-time equivalent of employees	9,961	5,534
Full-time equivalent of students enrolled exclusively in distance education	1,774	5,503
Weighted campus users	34,200.25	21,675.75

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	7,624.21 Gallons	14,472.16 Gallons

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

47.32

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	12,960,842 Gross square feet	9,685,160 Gross square feet

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	20.12 Gallons per square foot	32.39 Gallons per square foot

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

37.89

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

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	171 Acres	260 Acres

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	2,290,894.74 Gallons per acre	1,591,134.62 Gallons per acre

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

-43.98

Optional Fields

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:

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

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

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Additional documentation to support the submission:

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Data source(s) and notes about the submission:

The performance year data reported was provided from calendar year 2019. The institutional data provided in PRE4 is up to date (Spring 2021)
PRE 5 used data collected for fiscal year 2020 which runs July 2019 to June 2020. However this credit used data from calendar year 2019. This was selected to avoid COVID 19 impacts to data.