Overall Rating Gold - expired
Overall Score 65.60
Liaison Dayna Cook
Submission Date May 1, 2014
Executive Letter Download

STARS v2.0

Northern Arizona University
OP-26: Water Use

Status Score Responsible Party
Complete 1.24 / 5.00 Ellen Vaughan
Office of Sustainability
"---" indicates that no data was submitted for this field

Level of water risk for the institution’s main campus:

Total water use (potable and non-potable combined)::
Performance Year Baseline Year
Total water use 261,122,740 Gallons 206,235,408 Gallons

Potable water use::
Performance Year Baseline Year
Potable water use 228,550,445 Gallons 180,509,726 Gallons

Figures needed to determine "Weighted Campus Users"::
Performance Year Baseline Year
Number of residential students 7,100 6,053
Number of residential employees 20 15
Number of in-patient hospital beds 0 0
Full-time equivalent enrollment 19,320 12,523
Full-time equivalent of employees 2,679 2,202
Full-time equivalent of distance education students 4,764 4,104

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 5,930,272 Square feet 4,498,861 Square feet

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

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Year June 1, 2012 July 30, 2013
Baseline Year June 1, 2004 July 30, 2005

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

2005 was the year we've used in past reports.

We don not have solid numbers for the 2005 "Vegetated grounds" acreage. We imputed a conservative estimate.

Water recycled/reused on campus, performance year:
0 Gallons

Recycled/reused water withdrawn from off-campus sources, performance year:
32,572,295 Gallons

A brief description of any water recovery and reuse systems employed by the institution:

The University taps into the City of Flagstaff Reclaimed water system for the majority of its landscaping irrigation and some of its toilet water usage.

A brief description of any water metering and management systems employed by the institution:

During the performance year meters were installed on roughly 50% of the campus buildings. Data collect did not start during the performance year.

A brief description of any building retrofit practices employed by the institution, e.g. to install high efficiency plumbing fixtures and fittings:

All water fixtures on campus were changed out during the performance year. Low flow toilets, showerheads and airators were installed.

A brief description of any policies or programs employed by the institution to replace appliances, equipment and systems with water-efficient alternatives:

A brief description of any water-efficient landscape design practices employed by the institution (e.g. xeriscaping):

NAU utilizes reclaim water for irrigation of 85% of lawn space.

All specified planting materials shall be of species that has a proven history of resilience in this Northern Arizona locale. Preference shall be given to designs that center around a xeriscape approach and utilize drip irrigation.

A brief description of any weather-informed irrigation technologies employed by the institution:

A brief description of other water conservation and efficiency strategies employed by the institution:

NAU uses reclaimed water for toilet flushing in all new construction. A few buildings have the duel flush options.

The website URL where information about the institution’s water conservation and efficiency initiatives is available:
Data source(s) and notes about the submission:

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.