| Overall Rating | Gold - expired |
|---|---|
| Overall Score | 69.75 |
| Liaison | Josh Lasky |
| Submission Date | Feb. 23, 2018 |
| Executive Letter | Download |
George Washington University
OP-22: Water Use
| Status | Score | Responsible Party |
|---|---|---|
|
3.46 / 5.00 |
Janine
Helwig Environmental Management Engineer Facilities Services |
"---"
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
| Performance Year | Baseline Year | |
| Total water use | 254,394,478 Gallons | 286,280,866 Gallons |
Potable water use:
| Performance Year | Baseline Year | |
| Potable water use | 254,394,478 Gallons | 286,280,866 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, 2007 | June 30, 2008 |
If end date of the baseline year/period is 2004 or earlier, provide:
FY2008 was the year used as the baseline when GW established its GWater Plan and water conservation goals.
Figures needed to determine "Weighted Campus Users":
| Performance Year | Baseline Year | |
| Number of students resident on-site | 7,487 | 6,866 |
| Number of employees resident on-site | 41 | 24 |
| Number of other individuals resident on-site and/or staffed hospital beds | 0 | 0 |
| Total full-time equivalent student enrollment | 22,866 | 20,108 |
| Full-time equivalent of employees (staff + faculty) | 5,805 | 5,319.50 |
| Full-time equivalent of students enrolled exclusively in distance education | 2,687 | 871 |
| Weighted campus users | 21,370 | 20,139.88 |
Potable water use per weighted campus user:
| Performance Year | Baseline Year | |
| Potable water use per weighted campus user | 11,904.28 Gallons | 14,214.63 Gallons |
Percentage reduction in potable water use per weighted campus user from baseline:
16.25
Part 2
| Performance Year | Baseline Year | |
| Gross floor area | 8,614,351 Gross square feet | 7,315,674 Gross square feet |
Potable water use per unit of floor area:
| Performance Year | Baseline Year | |
| Potable water use per unit of floor area | 29.53 Gallons per square foot | 39.13 Gallons per square foot |
Percentage reduction in potable water use per unit of floor area from baseline:
24.53
Part 3
Yes
Area of vegetated grounds:
| Performance Year | Baseline Year | |
| Vegetated grounds | 196 Acres | 173 Acres |
Total water use (potable + non-potable) per unit of vegetated grounds:
| Performance Year | Baseline Year | |
| Total water use per unit of vegetated grounds | 1,297,931.01 Gallons per acre | 1,654,802.69 Gallons per acre |
Percentage reduction in total water use per unit of vegetated grounds from baseline:
21.57
Optional Fields
Since FY09, GW has conducted a competition between residence halls to reduce their electric & water consumption called Eco-Challenge. The format has changed over time, but for FY17 residence halls were awarded points for reducing their water consumption during the spring semester. Each building involved housed student "Eco-Reps" who encourage their fellow residents to participate in person and through flyers/events, with significant prizes for the winning halls. For FY18 this competition is being expanded to the fall and spring semesters
A brief description of the institution's water recovery and reuse initiatives:
The university has a GWater Plan that addresses water conservation through the design, management and use of GW’s campus water infrastructure, as well as through education and research – where the university has an even broader reach.
This is one of the most comprehensive plans for water sustainability issued by an American university, with eight clear goals and targets spanning across four major focus areas: potable water, rainfall capture, wastewater and bottled water. The plan is structured around the concept of GW being a responsible member of whole watersheds. The purpose of the plan is to improve GW’s direct water footprint within the Potomac and Chesapeake Watersheds, and its indirect water footprint in other watersheds.
Goals 2 and 3 of the GWater plan specifically relate to water recovery and reuse initiatives. Goal 2 states the following: Use GW campuses as test beds for new water reclamation technologies to reduce potable water consumption with a target of reusing all retained stormwater for gray water systems, cooling towers, and irrigation by 2021. Goal 3 states the following: Capture rainwater that falls on GW campuses: zero run-off.
In addition, new construction and major renovations at the University are designed to achieve LEED certification standards to the greatest extent possible. This includes low-flow plumbing fixtures as determined by local codes or GW standards, whichever are more stringent for aerators, toilets, urinals, showers, and faucets. It also includes the inclusion of cisterns and the consideration of low-sloped roofs for stormwater retention so that captured rainwater may be reused on-site for toilet flushing or irrigation.
Additional university initiatives to conserve and/or reuse water include the following: planting native species for landscaping to reduce irrigation requirements, recovering steam condensate from steam-boiler systems for reuse, monitoring water consumption from billing to immediately identify occurrences of high usage, and providing education and increasing awareness to university faculty, staff, and students on conserving water.
Newer buildings constructed and/or renovated are increasingly required to meet stringent stormwater retention requirements in DC. In particular, the following green roofs and rainwater harvesting systems were integrated into recent construction since 2010:
- A 1,596 sf green roof located at the Elliott School and Residence Hall.
- Development of a certified LEED Sustainable Site located at Square 80, which was previously an impervious parking lot and converted into a green space. This site was designed to collect up to 33,900 gallons of rain water that can be stored in underground cisterns or an aboveground rain barrel to hep irrigate the green space as well as provide water for a fountain feature. Other LID practices were integrated into the design of the Square 80 Plaza, including pervious paving, biofiltration planters, and bioswales.
- A 2,388 sf green roof located at Ames Hall.
- A 1,171 sf green roof, 6,000-gallon rainwater harvesting system for irrigation, and 16,500-gallon detention tank located at the Law Learning Center.
- A 5,860 sf green roof and 8,796-gallon rainwater harvesting system for reuse in toilets throughout the building at the Milken Institute School of Public Health.
- Two green roofs totaling 10,285 sf and a 42,636-gallon rainwater harvesting system for reuse in toilets throughout the building at Science and Engineering Hall.
- Three green roofs totaling 12,548 sf and a 5,924-gallon rainwater harvesting system for reuse in toilets of the B1 and B2 levels at District House.
There are also currently a total of seven (7) rain barrels that are currently utilized in multiple garden spaces on the Foggy Bottom Campus. One of these spaces includes the GroW Garden, where an innovative rainwater harvesting system for the collection of up to 200 gallons of water was installed in 2016 to use towards irrigating the community garden.
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):
In January 2015, during the reporting year, all toilets in the International House residence hall were replaced from an older model using several gallons per flush to a low-flow model. In August 2015, toilets were replaced or rebuilt (to reduce water usage), aerators & lower flow showerheads were installed in three more residence halls. This water efficiency program has been repeated each winter & summer break -- to approximately 40 buildings on campus.
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:
GWater Plan: https://sustainability.gwu.edu/sites/sustainability.gwu.edu/files/downloads/GWater%20Plan.pdf
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.