Overall Rating Silver
Overall Score 57.65
Liaison Michelle Gibbs
Submission Date March 6, 2020

STARS v2.2

Hope College
OP-21: Water Use

Status Score Responsible Party
Complete 3.87 / 4.00 Michelle Gibbs
Director
Office of Sustainability
"---" 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

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 67,880,252 Gallons 97,382,868 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 67,880,252 Gallons 97,382,868 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period Jan. 1, 2018 Dec. 31, 2018
Baseline Period Jan. 1, 2005 Dec. 31, 2005

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

This was to align with our GHG 2005 baseline.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 2,284 2,433
Number of employees resident on-site 12 12
Number of other individuals resident on-site 20 0
Total full-time equivalent student enrollment 2,967 3,205.80
Full-time equivalent of employees 731 675
Full-time equivalent of students enrolled exclusively in distance education 0 0
Weighted campus users 3,367.50 3,521.85

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 20,157.46 Gallons 27,651.05 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
27.10

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 1,931,725 Gross Square Feet 1,625,506 Gross Square Feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 35.14 Gallons / GSF 59.91 Gallons / GSF

Percentage reduction in potable water use per unit of floor area from baseline:
41.35

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 150 Acres 150 Acres

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 452,535.01 Gallons / Acre 649,219.12 Gallons / Acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
30.30

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

Increased plantings of native, perennials, and grasses that need reduced care and water.
Mulch with native hardwood bark.
Subsurface and drip irrigation.
Uses water management software and monitoring systems for irrigation and employs a full time irrigation technician.

Installs bubbler zones for new plantings and removes them when plants are established.


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

Worked with the Holland Board of Public Works (HPBW) to install a gray water line for use in our core campus to reduce the filtration level for irrigation.
Use water bags for the first year and during high-stress times.
In 2016 Hope installed a green roof on the DeWitt Cultural and Student Center and in 2019 installed a 2nd green roof on the LEED Certified Campus Ministries Building.


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

All showers on campus have been retrofitted with low-flow shower heads. Also, when residence halls Gilmore and Kollen were are renovated they both received low-flow toilets.
As other renovation projects come up or toilets need to be replaced from the older 5 or 6 gallon/flush toilets they are replaced with 1.2 gallon/flush toilets.


Website URL where information about the institution’s water conservation and efficiency efforts is available:
Additional documentation to support 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 and complete the Data Inquiry Form.