Overall Rating Gold
Overall Score 66.48
Liaison Andrew Iacona
Submission Date Sept. 28, 2020

STARS v2.2

Northern Arizona University
OP-21: Water Use

Status Score Responsible Party
Complete 5.43 / 6.00 Jon Heitzinger
Associate Utilities Director
Facility 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 Aqueduct Water Risk Atlas:
High

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 224,318,670 Gallons 267,356,440 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 167,220,620 Gallons 244,797,540 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period July 1, 2018 June 30, 2019
Baseline Period June 1, 2005 July 30, 2006

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

2005 was the year we have used in past reports. However, we were unable to confirm the numbers. FY06 was used as the first year with reclaimed water on campus. The number was received from Utility Services tracking.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 9,834 6,053
Number of employees resident on-site 18 15
Number of other individuals resident on-site 1 0
Total full-time equivalent student enrollment 30,512 12,523
Full-time equivalent of employees 3,455.67 2,202
Full-time equivalent of students enrolled exclusively in distance education 9,345.67 4,104
Weighted campus users 20,930.50 9,482.75

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 7,989.33 Gallons 25,815.04 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
69.05

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 6,884,770 Gross Square Feet 4,498,861 Gross Square Feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 24.29 Gallons / GSF 54.41 Gallons / GSF

Percentage reduction in potable water use per unit of floor area from baseline:
55.36

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 405.68 Acres 380 Acres

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 552,944.86 Gallons / Acre 703,569.58 Gallons / Acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
21.41

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

Every water bottle refill station has an education sign on it designed by students. We recently replaced a natural turf field with synthetic (CALSENSE projected savings per year - Ralph). We have adopted the City of Flagstaff's Low Impact Development (LID)standards and are trying to utilize captured water for HVAC cooling water.


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

The University taps into the City of Flagstaff's reclaimed water system for the majority of its landscaping irrigation and some of its toilet water usage. We are working with the City to overcome distribution bottle-necks to reach 100% reclaimed utilization for irrigation.


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

Most of campus water fixtures were changed out in 2012. Low flow toilets, shower heads and aerators were installed and are now our campus standard.


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.