Overall Rating	Silver
Overall Score	48.73
Liaison	Claire Rodgers
Submission Date	March 4, 2022

STARS v2.2

Franklin W. Olin College of Engineering
OP-21: Water Use

Status

Score

Responsible Party

1.35 / 4.00

"---" 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:

Low to Medium

Part 1. Reduction in potable water use per person

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

	Performance Year	Baseline Year
Total water withdrawal	20,869,819 Gallons	21,828,089 Gallons

Potable water use:

	Performance Year	Baseline Year
Potable water use	5,805,819 Gallons	6,764,089 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, 2016	June 30, 2017

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:

FY17 is the first year we did a comprehensive review of data.

Figures needed to determine "Weighted Campus Users":

	Performance Year	Baseline Year
Number of students resident on-site	347	354
Number of employees resident on-site	1	4
Number of other individuals resident on-site	3	6
Total full-time equivalent student enrollment	361	382
Full-time equivalent of employees	128	125
Full-time equivalent of students enrolled exclusively in distance education	0	0
Weighted campus users	456.75	475.75

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	12,711.15 Gallons	14,217.74 Gallons

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

10.60

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	394,877 Gross square feet	389,048 Gross square feet

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	14.70 Gallons per square foot	17.39 Gallons per square foot

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

15.43

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

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	35 Acres	35 Acres

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	596,280.54 Gallons per acre	623,659.69 Gallons per acre

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

4.39

Optional Fields

A brief description of the institution's water-related behavior change initiatives:

Some toilets in the Campus Center and Milas Hall are designed to save water by using different amounts of water when needed and have the appropriate signage.

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

Olin College invested in the water efficiency and wastewater planning from its original construction. Seventy percent of the irrigation systems on campus are fed by well water.

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

Olin has begun upgrading flushometers for the toilets in dormitories in order to make them low-flow toilets. They are Water Sense certified by the EPA. Faucets are also being upgraded in the dorms to low flow Water Sense certified. Shower heads are also being replaced so that they are low-flow.

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:

Olin's water meter data was used to calculate potable water usage and the well water usage was estimated based on run time and flow rate of the well.

Claire Rodgers, Energy Manager