Overall Rating	Gold
Overall Score	67.32
Liaison	Jennifer Daniels
Submission Date	Jan. 31, 2024

STARS v2.2

California State University, Stanislaus
OP-21: Water Use

Status

Score

Responsible Party

5.23 / 6.00

Jennifer Daniels
Sustainability Specialist
CPFM

"---" 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

Part 1. Reduction in potable water use per person

Total water withdrawal (potable and non-potable combined):

	Performance Year	Baseline Year
Total water withdrawal	169,732,196 Gallons	217,295,488 Gallons

Potable water use:

	Performance Year	Baseline Year
Potable water use	11,388,790 Gallons	22,919,468 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):

	Start Date	End Date
Performance Period	July 1, 2021	June 30, 2022
Baseline Period	July 1, 2012	June 30, 2013

If end date of the baseline year/period is 2004 or earlier, provide:

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

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Figures needed to determine "Weighted Campus Users":

	Performance Year	Baseline Year
Number of students resident on-site	260	603
Number of employees resident on-site	1	2
Number of other individuals resident on-site	0	0
Total full-time equivalent student enrollment	8,208	7,759.40
Full-time equivalent of employees	1,083	774
Full-time equivalent of students enrolled exclusively in distance education	4,060.51	14.60
Weighted campus users	3,988.12	6,540.35

Potable water use per weighted campus user:

	Performance Year	Baseline Year
Potable water use per weighted campus user	2,855.68 Gallons	3,504.32 Gallons

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

18.51

Part 2. Reduction in potable water use per unit of floor area

Gross floor area of building space:

	Performance Year	Baseline Year
Gross floor area	1,350,718 Gross square feet	1,267,754 Gross square feet

Potable water use per unit of floor area:

	Performance Year	Baseline Year
Potable water use per unit of floor area	8.43 Gallons per square foot	18.08 Gallons per square foot

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

53.36

Part 3. Reduction in total water withdrawal per unit of vegetated grounds

Area of vegetated grounds:

	Performance Year	Baseline Year
Vegetated grounds	114.82 Acres	99.12 Acres

Total water withdrawal per unit of vegetated grounds:

	Performance Year	Baseline Year
Total water withdrawal per unit of vegetated grounds	1,478,245.92 Gallons per acre	2,192,246.65 Gallons per acre

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

32.57

Optional Fields

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

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

Water from the campus irrigation system and storm water run-off from all areas of campus, including surrounding city sidewalks, is captured in the main reflecting pond (holding pond) and campus lakes for re-use. To facilitate optimal use of this recovered water, and to reduce energy usage and greenhouse gas emissions, the central plant cooling towers were converted from the use of the City of Turlock's domestic water supply to this reclaimed water. A new filtration system cleans, sterilizes and softens the reclaimed water for cooling tower use, saving approximately 4 to 5 million gallons of potable drinking water per year. 100% of the cooling tower blow down is then captured and reclaimed for irrigation.

Conversion to a sophisticated, high-speed, web-based energy management system (EMS), allowing a wider range of control and higher level of efficiency from our campus Heating, Ventilation and Air Conditioning (HVAC) system, also allows us to control the campus reclaimed water system.

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

Installation of water meters at individual buildings, lakes, and landscaped areas to identify heavy water consumption and enable the University to pinpoint areas to address.

Installation of "Smart" irrigation clocks across campus that utilize satellite weather and moisture sensors to control irrigation cycles, and save water and electricity to run the pumps.

Retrofit of shower-heads, faucet aerators, urinals and toilets across campus to reduce water consumption.

Installation of drought tolerant vegetation in new or renovated landscape projects across campus, as well as increased use of mulch to maintain moisture in planter beds.

Website URL where information about the institution’s water conservation and efficiency efforts is available:

https://www.csustan.edu/sustainability/campus-operations/water

Additional documentation to support the submission:

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Data source(s) and notes about the submission:

The university's total water withdrawal includes water from the university's well and potable water from the city. Almost 90% of the water (non-potable) is used for the campus cooling towers, which are used to cool most campus buildings, and for irrigation to maintain landscaping in the hot climate of the Central Valley of California, from April to October annually.

Weighted Campus Users fields differ from PRE-5, as a different performance year is used for this credit. Data in this credit reflect Fall 2021 enrollment, resident, and employee counts.