Overall Rating Silver - expired
Overall Score 54.15
Liaison Leslie North
Submission Date March 3, 2017
Executive Letter Download

STARS v2.1

Western Kentucky University
OP-22: Water Use

Status Score Responsible Party
Complete 4.00 / 4.00 Christian Ryan
Sustainability Coordinator
WKU
"---" 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:
Low to Medium

Total water use (potable and non-potable combined):
Performance Year Baseline Year
Total water use --- 269,844,888 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 127,195,156 Gallons 269,844,888 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Year July 1, 2015 June 30, 2016
Baseline Year July 1, 2008 June 30, 2009

A brief description of when and why the water use baseline was adopted:

It is not a formally adopted baseline, however it has served as the baseline for AASHE STARS reporting since our first submission. WKU Facilities Management tracks utility use including water, so use data is always readily available.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 4,737 4,393
Number of employees resident on-site 25 0
Number of other individuals resident on-site and/or staffed hospital beds 0 0
Total full-time equivalent student enrollment 16,143 15,951
Full-time equivalent of employees (staff + faculty) 2,450 2,453
Full-time equivalent of students enrolled exclusively in distance education 3,053 499
Weighted campus users 12,845.50 14,527

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 9,901.92 Gallons 18,575.40 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
46.69

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 5,187,930 Gross Square Feet 4,743,844 Gross Square Feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 24.52 Gallons / GSF 56.88 Gallons / GSF

Percentage reduction in potable water use per unit of floor area from baseline:
56.90

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 206.98 Acres 220 Acres

Total water use (potable + non-potable) per unit of vegetated grounds:
Performance Year Baseline Year
Total water use per unit of vegetated grounds 0 Gallons / Acre 1,226,567.67 Gallons / 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:

In 2016, WKU began installing building level water metering to enable better measurement and benchmarking. We are now able to determine areas of high water use, detect possible leaks, and develop goals for water use reduction.


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

Several rainwater harvesting systems have been installed at WKU. At three sites on the main campus, and one site at the WKU farm, rainwater is collected from rooftops into large cisterns. On campus, one of two 550 gallon cisterns is located near the Department of Facilities Management and the other is at the Health Services building. The water from the cisterns is dispersed to drip lines that irrigate local gardens. At the Dept. of Facilities Management maintenance barn at South Street, six 2,600 gallon cisterns collect water off the barn roof, which is used to fill an irrigation truck for campus trees and gardens. On the Farm, two 1300 gallon cisterns collect water from the livestock barn roof. This water is for many uses, including spraying down the Expo Center arena floor to reduce dust.


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):

WKU entered into an Energy Savings Performance Contract (ESPC) with Johnson Controls Inc. in 2009. WKU’s ESPC includes $9.7 million in energy reducing and facility improvements. Thirty-eight existing buildings have been impacted with 2,114 water saving fixtures.


The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:

Water data use obtained from Kayla Howard, Department of Facilities Management. The spreadsheet detailing water use by location is attached for verification and consistency in future reporting.

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 and complete the Data Inquiry Form.