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Water Efficiency

Eliminates the costs and waste associated with defective washroom outlets or vandalism

If a washroom outlet is defective or tampered with, water from the mains or central supply can pass uncontrolled through the outlet valves such as taps or WCs. This waste of water can often pass undetected and cause considerable costs (see table). As the sensazone controls the flow of water into the washroom area at the entry point, the water is prevented from passing uncontrolled through the damaged outlet, which eliminates the risk of water wastage or flooding during vacant periods.

Water Loss Drip Dribble Stream Fully Open
Pressure (Bar) 2 2 2 2
Litres per week 889 1,512 8,643 84,672
Litres per year 46,228 78,624 449,436 4,402,944
Cost per week (£)* 2.07 3.52 20.13 197.28
Cost per year (£)* 107.71 183.19 1,047.18 10,258.86

* Based on average water costs of 2.33 per m³ (Ofwat 2008-2009)

The calculations above are based on a defective WC cistern valve which is allowing water to pass through a WC at different rates during periods of non-use. Cistermiser has quantified these varying rates and calculated the potential water and financial losses.

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