The Tap Meter, designed by Henry Ellis-Paul of Brunel University, shows the user the amount of water used in that particular instance. This was one of several product design concepts showcased at "Made in Brunel" which explored ways of encouraging users to reduce their water usage or wastage (see also "Water and energy saving tap" and "Squirt").

The designer's intention is that information provided by the Tap Meter will “change the user’s habits and behaviour through involvement and emotional attachment to the product”. Commentary on this design suggests that the Tap Meter could also be used to measure out the amount of water used for recipes or to ensure that users drink the recommended amount of water each day [1].

Sourced from: Architectures of Control: Design with Intent http://architectures.danlockton.co.uk/2007/06/28/changing-behaviour-water-meter-taps/ (Accessed December 2008)