Overall Rating Silver - expired
Overall Score 56.90
Liaison Paul Mathisen
Submission Date April 16, 2015
Executive Letter Download

STARS v2.0

Worcester Polytechnic Institute
OP-26: Water Use

Status Score Responsible Party
Complete 0.90 / 4.00 Liz Tomaszewski
Facilities Systems Manager/Sustainability Coordinator
Facilities Department
"---" indicates that no data was submitted for this field

Level of water risk for the institution’s main campus:
Medium to High

Total water use (potable and non-potable combined)::
Performance Year Baseline Year
Total water use 43,470,683 Gallons 30,786,295 Gallons

Potable water use::
Performance Year Baseline Year
Potable water use 34,970,683 Gallons 30,786,295 Gallons

Figures needed to determine "Weighted Campus Users"::
Performance Year Baseline Year
Number of residential students 1,941 1,237
Number of residential employees 4 2
Number of in-patient hospital beds 0 0
Full-time equivalent enrollment 4,125 2,894
Full-time equivalent of employees 916 760
Full-time equivalent of distance education students 399 0

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 2,394,471 Square feet 1,946,938 Square feet

Area of vegetated grounds::
Performance Year Baseline Year
Vegetated grounds 35 Acres 35 Acres

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Year July 1, 2013 June 30, 2014
Baseline Year July 1, 2007 June 30, 2008

A brief description of when and why the water use baseline was adopted:
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Water recycled/reused on campus, performance year:
850,000 Gallons

Recycled/reused water withdrawn from off-campus sources, performance year:
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A brief description of any water recovery and reuse systems employed by the institution:

Two 25,000 gallon cisterns were installed under the Quadrangle that collect drainage water from the roof and perimeter of the Sports & Recreation Center. This water is pumped to the roof of this building and used for the rooftop cooling towers. This process saves 850,000 gallons of fresh water per year.


A brief description of any water metering and management systems employed by the institution:

Water metering is provided through the City of Worcester water usage system. Metering is separate by each WPI building.


A brief description of any building retrofit practices employed by the institution, e.g. to install high efficiency plumbing fixtures and fittings:

Waterless urinals were installed in the Sports & Recreation Center. Low-flow faucets and showers were installed in the Sports & Recreation Center, East Hall, and Faraday Hall. Toilet flushometers were installed in the Sports & Recreation Center and Faraday Hall. In building renovations, priority is placed on water conservation appliances.


A brief description of any policies or programs employed by the institution to replace appliances, equipment and systems with water-efficient alternatives:

In building renovations, priority is placed on water conservation applicances.


A brief description of any water-efficient landscape design practices employed by the institution (e.g. xeriscaping):

The green roof built atop East Hall includes native plants that do not require irrigation.


A brief description of any weather-informed irrigation technologies employed by the institution:

Rain sensors are installed on the irrigation systems, which prevent irrigation when it is raining.


A brief description of other water conservation and efficiency strategies employed by the institution:
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The website URL where information about the institution’s water conservation and efficiency initiatives is available:
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Data source(s) and notes about the submission:
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The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.