04 05 Bath capacity The Water Efficiency Calculator requires the input of the capacity of baths up to the bottom of the bath overflow. Today there are a wide diversity of bath shapes and sizes and it is possible to purchase baths from Ideal Standard with a capacity as low as 116 litres ( a typical average capacity for baths is around 190 litres). To keep water usage down it is recommended that both a bath and a shower are installed in a dwelling. If there is only one bath or one shower it will be given a very high weighting. Tap and mixer flow rates All taps and mixers inside the house are measured and they can account for high water consumption. Whether you need to reduce the flow rate on taps or mixers will be determined by the water pressure in the building. Most Ideal Standard mixers and pillar taps can be fitted with water regulators that either regulate the water into or out of the fitting. WC flush volume The calculator takes into account the amount of water required to flush WCs in the house. Modern WCs often require less water than they used to and by specifying a dual flush suite the smaller flush will be measured in a 2: 1 usage ratio - dramatically reducing the amount of water consumed. Concept Arc 55cm basin; pedestal; close coupled wc with Arc cistern; 170cm water saving bath ( right handed) with Ideal Waste System. Ceraplan single lever basin mixer, single lever bath filler.
Low flushWCs As in most areas of water consumption it is important to balance the optimum use of water against the performance of the product. Some Ideal Standard WCs now flush on as low as 4/ 2.6 litres of water ( dual flush). Although they perform well to the regulations it wouldn't be advisable to install these in an old property where the pipework between the house and the main sewer may block if low volumes of water are used. Water usage by WC flush There is a big difference in water usage in the Calculator when using different WCs: Alto 4/ 2.6 litre close coupled WC suiteConcept Cube 4/ 2.6 litre close coupled WC suite New Studio Arc 4/ 2.6 litre close coupled WC suite Cistern capacity 6 litre 6/ 4 litre Dual Flush 4/ 2.6 litre Dual Flush Water usage 26.52 litres 20.60 litres 13.54 litres