WASHROOM
THAMES WATER SAVE WATER IN READING
Thames Water has cut water use by a staggering amount at its Clearwater Court office in Reading, David Meacock, Technical Director at Cistermiser explains how.
Thames Water replaced the existing urinal sensors in the washrooms with Cistermiser’s Direct Flush. They collectively reduced the amount of water used during the trial period by 90.7%. Meanwhile, the company also replaced the existing non-concussive taps with Cistermiser’s sensor controlled Vectataps, which cut water usage from the taps by 59%.
When the gains achieved by these two sensor technologies were added to the savings from new toilets provided by another supplier it showed that the two washrooms now save over 11,500 litres a week and are on course to reduce water use by a colossal 500,000 litres over the next 12 months.
Direct Flush uses infrared sensors to detect visitors to the urinal, automatically flushing two seconds after use to ensure the highest level of hygiene from the minimum volume of water. It removes the need for auto- flush cisterns which flush all urinals intermittently even if they have not all been used. The average water saving per urinal using Direct Flush at Clearwater has been calculated as 1,315 litres per person p.a.
Meanwhile the newly installed Vectataps are elegant, deck-mounted, polished chrome plated brass basin spouts with inbuilt infrared control that turn the water on whenever a visitor to the basin places their hands in front of the sensor.
Andrew Tucker, Water Efficiency Manager at Thames Water, said: “We recently installed Cistermiser sensor taps and urinal sensors in two washrooms as part of a water efficiency pilot project at our head office in Reading.
“We have been delighted with the look and performance of the two
20 | TOMORROW’S FM
Not only have the water savings been enormous, there are substantial cost savings too – if the same combined technology was installed in all 16 washrooms at Clearwater Court it would lower annual water use by 4.8 million litres and save Thames Water around £10,000 per year.
The project is one of a number of Cistermiser technology installations currently being specified across the UK as companies embrace the potential offered by so-called smart technology.
Smart technologies and data collection are opening up opportunities that are transforming building management systems.
“URINALS AND WCS WITHOUT ANY FITTED
FLUSH CONTROLS CAN ACCOUNT FOR UP TO 75% OF A BUILDING’S OVERALL WATER CONSUMPTION.”
devices and have achieved an average water saving of more than 80%, compared with the previous efficient fittings. We are now looking to roll out further improvements to our other buildings.”
This has been a terrific trial and provides an undisputable endorsement of the value of moving to sensor- controlled technology in the bathroom – the more so, given that the previous fittings were considered efficient.
In the case of commercial washrooms, these innovations are immeasurably helpful in terms of improving performance. Currently, urinals and WCs without any fitted flush controls can account for up to 75% of a building’s overall water consumption, which is a significant cost.
Existing washroom management systems, such as Sensazone, use outlet-mounted and ceiling-mounted sensors to monitor user activity in real time. A ceiling-mounted unit will detect visitors and automatically switch on the lights, ventilation and the water supply.”
The technology also enhances the user experience. WCs fitted with IR sensors such as Easy Flush reduce contact between user and washroom, either to a simple ‘wave action’ to flush, or a ‘walkaway’ option whereby the toilet automatically flushes once the user is finished. It all helps to provide a cleaner, more hygienic, and easy to use facility.
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