Water from the showers and bathtubs (only 8 of the 151 bedrooms have baths) and condensation from the HVAC fan coil units are drained to a state-of-the-art PONTOS grey water recycling plant where it is filtered and sterilised. The recycling process uses very little energy. The water is first filtered to remove macro particles. It is then passed through a series of tanks that are kept at conditions optimal for bacteria by aerating the tanks and providing a growth medium (several pieces of sponge) for the bacteria to nucleate around. Once bacteria colonies are of a certain size they start to break down organic matter in the water. This settles as a sludge and is periodically pumped off to the sewer. Lastly, the water is sterilised by passing it over ultraviolet lights. The processed grey water is then reticulated throughout the hotel and used for the flushing of the toilets saving up to 6000l per day.

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