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SDS’s grey water recycling system facilitates prestigious development’s compliance with current and anticipated future water consumption regulations.


‘80 Holland Park’ is a new luxury apartment complex located in a distinguished, affluent area of West London on the site of ‘Duke’s Lodge’, a neo-Georgian mansion from 1939. The development consists of 25 homes, comprising duplex ‘town houses’, loft-style apartments and penthouses, along with a swimming pool, spa and gym, residents’ lounge, private screen areas and business suite.

SDS was required to deliver a bespoke grey water recycling system that enables waste water from basins, showers and baths to be treated and used throughout the building, making the development achieve water efficiency criteria of 100 litres maximum mains water consumption per person per day.


A small footprint ensured that the SDS grey water recycling system could fit more easily in the building’s plant room than traditional MBR systems.

The topography of the site, along with the restricted headroom and layout of the basement level plant room, were key factors in selecting the SDS system. The plant room’s central location placed the system within reach of as many as 27 collection outlets.

Using SDS’s SYMBiotIC™ technology, remote monitoring of the system is also enabled, so that any requirement for maintenance visits or servicing can be identified in real time, ensuring continued water supply.


By reducing mains water consumption to 90 litres per person per day, the SDS system met and exceeded a key condition in the London Plan, whereby Building Regulations set a daily personal limit of 100 litres.

The system operates at 85.8% efficiency and delivers 2.1 cubic metres of treated grey water each day, sufficient to flush all 88 WC’s on the development. The estimated daily grey water yield is just over 3,000 litres when the development is fully occupied.

The SDS team provided excellent expert support and produced clear calculations to show precisely how much water their system would process and subsequently provide. This information was also invaluable to our client's environmental engineers to demonstrate the sustainable benefits of the development. By reviewing the full efficiency data, we could also be confident that the size of the system being specified was correct.

Dave Honey, Principal Public Health Engineer, chapmanbdsp

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