Overall Rating	Gold - expired
Overall Score	66.38
Liaison	Olivia Shehan
Submission Date	Nov. 13, 2018
Executive Letter	Download

STARS v2.1

Wellesley College
OP-22: Water Use

Status

Score

Responsible Party

4.51 / 5.00

Dorothea Von Herder
Sustainability Coordinator
Facilties

"---" 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’s Aqueduct Water Risk Atlas:

Medium to High

Part 1

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

	Performance Year	Baseline Year
Total water use	98,810,190 Gallons	124,769,000 Gallons

Potable water use:

	Performance Year	Baseline Year
Potable water use	82,212,891 Gallons	124,769,000 Gallons

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

	Start Date	End Date
Performance Year	Jan. 1, 2017	Dec. 31, 2017
Baseline Year	Jan. 1, 2009	Dec. 31, 2009

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:

A baseline year was adopted in 2009 as part of an aggressive partnership with the DEP to reduce the college's water withdrawal. This was also a targeted priority even before the Office of Sustainability was established.

Figures needed to determine "Weighted Campus Users":

	Performance Year	Baseline Year
Number of students resident on-site	2,069	2,190
Number of employees resident on-site	15	15
Number of other individuals resident on-site and/or staffed hospital beds	0	0
Total full-time equivalent student enrollment	2,419	2,237
Full-time equivalent of employees (staff + faculty)	1,141	1,003
Full-time equivalent of students enrolled exclusively in distance education	0	0
Weighted campus users	3,191	2,981.25

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	25,763.99 Gallons	41,851.24 Gallons

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

38.44

Part 2

Gross floor area of building space:

	Performance Year	Baseline Year
Gross floor area	2,596,103 Gross square feet	2,462,855 Gross square feet

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	31.67 Gallons per square foot	50.66 Gallons per square foot

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

37.49

Part 3

Does the institution wish to pursue Part 3 of this credit? (reductions in total water use per acre/hectare of vegetated grounds):

Yes

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	470 Acres	468 Acres

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

	Performance Year	Baseline Year
Total water use per unit of vegetated grounds	210,234.45 Gallons per acre	266,600.43 Gallons per acre

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

21.14

Optional Fields

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:

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

The majority of irrigation on main campus utilizes water from Lake Waban and not from our potable supply. While irrigation does use water the water is being used in the same general area it is drawn from and the water not taken up by plants or lost through evaporation is returned to this system. The Nehoiden Golf Course is now irrigating with water drawn from a well installed on the golf course property in 2012. While this does not meet the criteria of the credit it is important to note.

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):

All shower heads and faucets on campus are low-flow. All washing machines are high efficiency, both in terms of water use and electrical consumption. Dual flush toilets have been installed in the chapel and some dorms.

The website URL where information about the programs or initiatives is available:

http://cs.wellesley.edu/~slee/sust/

Additional documentation to support the submission:

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Data source(s) and notes about the submission:

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