Reduce volumes of water being flushed away
Dual flush toilets reduce the volume of water being flushed. This can have a significant effect on your buildings water consumption. Older toilets have cisterns of between 10 and 12 litres, where in fact only half of this water volume is ever necessary.
Modern toilets have more sensible cisterns of around 6 litres, and even this is unnecessarily wasteful for flushing liquids – you can save a lot of water by installing a dual-flush or multi-flush device to your buildings toilets. The dual flush device has two fixed settings – a light setting for urine and a heavier one for solids.