Overall Rating Silver - expired
Overall Score 58.86
Liaison Jonathan Rausseo
Submission Date April 10, 2013
Executive Letter Download

STARS v1.2

University of Ottawa
OP-T2-46: Non-Potable Water Usage

Status Score Responsible Party
Complete 0.25 / 0.25 Jonathan Chiasson
Mechanical and Electrical Technologist
Physical Resources Service
"---" indicates that no data was submitted for this field

Does the institution use non-potable water (e.g., harvested rainwater or graywater) for irrigation and/or other applications?:

A brief description of the source of non-potable water and how it is used:
The University of Ottawa employs a black water re-use system to provide feed water to the cooling towers. The black water is sourced from the concentrate of the science pre-synced water purification plant and the over-flow from the aquatic care fish holding facility.(on main campus) Aquatic care black water diverted to cooling tower make up and enriched reverse osmosis concentrate that used to go to sewer (filtered) : 12118 m3 (07-08) at the power plant (continuous) At our health science campus, we use a reverse osmosis system to purify ‘black water’. Use concentrate to feed it back to the next RO. Water optimisation and black water recycling RO concentrate used as feed water to RO 18 000 m3 saved (09-10).

The percentage of irrigation water usage from recovered, reclaimed or untreated sources :

The percentage of building space using water from recovered, reclaimed or untreated sources:

The percentage of water used in utility plants from recovered, reclaimed or untreated sources:

The website URL where information about the program, policy, or practice 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.