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Introduction of a Water Saving Initiative – Prosan's Propag8™ Waterless Urinal Maintenance System
Property: Colonial - 300 Queen Street, Brisbane, Queensland
The subject property of this case study is an “A” Grade Commercial high rise office complex owned by Colonial First State, managed by Jones Lang Lasalle.
The property comprises of 24 levels of commercial offices, with a plant room on level thirteen and a Food Court on the Lower Ground.
There are men’s toilet facilities on each level, other than level thirteen. Each toilet has two ceramic wall hung urinals installed, that prior to the Propag8™ installation was directly connected to the water supply and flushed periodically. Forty eight standard ceramic flushing urinal fitments in total.
Prior to the installation of Propag8™ in February of 2006, no preparatory or descaling of discharge pipework was undertaken. Maintenance practices to the urinals or discharge pipework prior to the installation was not taken into consideration nor was the pre-existing pipework condition established with an endoscope survey.
Water usage by this property has been carefully monitored and meter readings taken every day since July 2002.
As can be seen from the monthly metered water usage readings the water usage has been decreasing in each successive calendar year.
2003 – 49194 KL
2004 - 42139 KL
2005 - 33181 KL
2006 - 23352 KL
The attached graphs and pie charts show a peak water usage in earlier years in February, which I understand is due to warmer ambient temperatures and humidity in Queensland in that month. Thus making the Air Conditioning work harder as it firstly has to dehumidify the air before cooling. The cooling towers are then operating on 100% capacity with a high condenser water loss through evaporation.
Interestingly there seems to be peaks in other months which may be worth investigation.
There are two major factors that can be attributed to the very pleasing water usage reduction:
1. A Cooling Tower replacement in October 2005
2. Introduction of Propag8™ Waterless Urinal Maintenance System in
February 2006
Although clearly both initiatives have had an impact on water usage, Marcel VanDen Camp the Facility Manager in this property acknowledges that greater savings have been achieved by converting the men’s urinals to waterless fitments.
| Using the Water and Sewerage Account from Brisbane City Council as a template for water usage costs for the June 2007 quarter, water usage costs are: |
| Total Account Charge |
$31,616.50 |
| Less pedestal charge |
$23,257.02 |
| Sub-total |
$ 8359. 49 |
| Trade Waste Charge |
$ 979. 08 |
| Sub-total |
$ 7380. 04 |
| Sewerage access |
$ 94. 10 |
| Total |
$ 7286. 30 |
| $7286.30 divided by 5270 KL = $1.38 per KL |
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Taking into consideration the water usage listed below:
Water usage for the year ending December 2005 = 33181 KL
Water usage for the year ending December 2006 = 23352 KL
There is an approximate water saving of = 9829 KL. |
Converting the KL saving to a dollar value, we arrive at dollars savings per annum of:
Dollar saving of 9829KL @ $1.38 = $13564.02 per annum
Dollar saving based on current cost of $1.75KL = $17200.75 per annum |
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Prosan Maintenance Service Costs
Prosan’s maintenance service costs for 300 Queen Street, Brisbane, inclusive of a fortnightly service and all consumables are $3960 per quarter or $15840.00 per annum.
Potable Water Savings
From the monitored water usage figure of 49194KL for the year 2003 to the monitored figure for the year 2006 of 23352KL; savings of 25842KL of potable water have been achieved. Potable water saving of over 50%!!
These potable water savings are a great tribute to the pro-active sustainability policies of Colonial First State and of course the excellent Sustainability management of Jones Lang Lasalle, and the great personal efforts of Marcel VanDen Camp and his Facility Management Team. Congratulation!
Yours sincerely,
John Hayes
Managing Director
Prosan Pty Limited |
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Colonial
300 Queen Street, Brisbane
Queensland |
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