| Overall Rating | Gold - expired |
|---|---|
| Overall Score | 83.20 |
| Liaison | Maddie LoDico |
| Submission Date | Nov. 5, 2018 |
| Executive Letter | Download |
Colby College
OP-22: Water Use
| Status | Score | Responsible Party |
|---|---|---|
|
2.66 / 4.00 |
Maddie
LoDico Director of Sustainability Sustainability Office |
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 | 35,936,912 Gallons | 40,213,028.74 Gallons |
Potable water use:
| Performance Year | Baseline Year | |
| Potable water use | 35,936,912 Gallons | 40,213,028.74 Gallons |
Start and end dates of the performance year and baseline year (or three-year periods):
| Start Date | End Date | |
| Performance Year | July 1, 2016 | June 30, 2017 |
| Baseline Year | July 1, 2004 | June 30, 2005 |
A brief description of when and why the water use baseline was adopted:
We are using 2005 as a common baseline throughout this submission, as this was the year that the College began formally tracking data in all STARS reporting fields.
Figures needed to determine "Weighted Campus Users":
| Performance Year | Baseline Year | |
| Number of students resident on-site | 1,860 | 1,664 |
| Number of employees resident on-site | 16 | 13 |
| Number of other individuals resident on-site and/or staffed hospital beds | 17 | 0 |
| Total full-time equivalent student enrollment | 1,917 | 1,764 |
| Full-time equivalent of employees (staff + faculty) | 817 | 640 |
| Full-time equivalent of students enrolled exclusively in distance education | 0 | 0 |
| Weighted campus users | 2,536.50 | 2,222.25 |
Potable water use per weighted campus user:
| Performance Year | Baseline Year | |
| Potable water use per weighted campus user | 14,167.91 Gallons | 18,095.64 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 | 1,549,830 Gross square feet | 1,371,951 Gross square feet |
Potable water use per unit of floor area:
| Performance Year | Baseline Year | |
| Potable water use per unit of floor area | 23.19 Gallons per square foot | 29.31 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 | 671 Acres | 621.86 Acres |
Total water use (potable + non-potable) per unit of vegetated grounds:
| Performance Year | Baseline Year | |
| Total water use per unit of vegetated grounds | 53,557.25 Gallons per acre | 64,665.73 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:
The EcoReps host an annual competition called the 5 Minute Shower Challenge to encourage students to take shorter showers and save water. Timers are provided in all public dormitory showers throughout campus, and students living in suites can easily request a timer. There are sign up sheets in every bathroom for students who complete the challenge to sign their name in order to receive a sticker. The dorm with the highest percentage participation is deemed the campus winner.
A brief description of the institution's water recovery and reuse initiatives:
None
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 sinks have 0.5 gpm aerators installed, all showers have 1.5 gpm aerators, many toilets have dual-flush capabilities, and those that do not are 1.4 gpm or less flushes. All washers and dryers on campus are Energy Star certified. The irrigation system, when present, is equipped with rain sensors. Each new construction or commercial interiors project on campus pursues LEED certification. As part of the certification process, projects typically realize a 35% water reduction in comparison to UPC 2006 code compliant water fixtures and fittings. These same guidelines are applied to any projects that are smaller in scale and don't pursue LEED certification. As much as possible, water efficient fixtures and fittings are incorporated into any building modification project. Colby has eliminated all water-cooled condensing units.
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:
All of Colby's water waste gets treated by Kennebec Sewage.
All of Colby's water waste gets treated by Kennebec Sewage.
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.