Water savings at Greenoak Housing Assciation schemes Green Building Store

Greenoak Housing Association

Future Proof Housing publication
 The feedback from residents at Greenoak has been extremely positive and follow up surveys show that resident satisfaction levels with bathroom fittings is very high.

Vicki March – Development Manager at Greenoak Housing Association

We’ve had no negative comments at all about the toilets, although one resident was a little disappointed that they didn’t have a dual flush toilet! They were very surprised when told that, at around 4 litres per flush, their toilet used less water overall than a standard dual flush WC.

Vicki March – Development Manager at Greenoak Housing Association

Above and beyond Ecohomes ‘Excellent’

Greenoak Housing Association provide affordable housing throughout Surrey, East and West Sussex. Winner of the prestigious Gold Award for Environmental Sustainability in 2007, Greenoak is at the cutting edge of genuinely sustainable building design. When developing their new housing model, ‘greenhomes’, Greenoak adopted the ‘built in not bolt on’ approach to sustainable construction, following a passive model. It was essential that ‘greenhomes’ achieved high levels of energy and water efficiency by reducing wastage rather than relying on renewable technologies or water recycling, which had the potential to alienate tenants or not work effectively.

Water efficiency was crucial and a great deal of research was undertaken in order to find the most effective ways of achieving the best savings. When looking at which sanitaryware to specify, concerns were raised about the inherent tendencies of valve operated dual flush WCs to leak and an alternative was sought. The siphon flush 4 litre ES4 WC, from Green Building Store, provided a reliable solution that offered significant water savings. In addition to the water savings provided by the low flush ES4 WCs, a number of flow restrictors were fitted and the plumbing layout was designed to be as efficient as possible.

Greenoak’s Development Manager, Vicki March, has followed the progress of the first two housing schemes closely, conducting detailed research with residents and monitoring actual energy and water use. The results of which were recently published in the report ‘Future Proof Housing?’ This  report charts water usage over the course of one year and states that residents were using an average of 95 litres of water per day, compared to a South East average of 150 litres. Vicki commented, “The Greenhomes water consumption figures show that residents use around one third less than the regional average. This shows that it is not necessary to install water recycling systems and that significant water savings can be achieved simply through efficient design and specification.”  She went on to say, “The feedback from residents at Greenoak has been extremely positive and follow up surveys show that resident satisfaction levels with bathroom fittings is very high. We’ve had no negative comments at all about the toilets, although one resident was a little disappointed that they didn’t have a dual flush toilet! They were very surprised when told that, at around 4 litres per flush, their toilet used less water overall than a standard dual flush WC.”

Case study: 2008

More information

Client: Greenoak Housing Association, www.greenoakha.org
Architect: Jon Broome Architects, www.jonbroome.co.uk

 

20th April 2008

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