Check out the prototype of the Show Me water consumption meter, where it will let you know just how much water you have used up by visualizing the effect of a blocked drain in your shower stall. A blue LED will light up each time 5 litres of water is used in the shower, and this prototype has moved people to lower their water consumption by an average of 10 liters in trial runs. Unfortunately, not having the visual reminder undid all the good work beforehand. We do wonder, though, if this system could in installed in such a way where it disconnects the hot water once a preset limit has been reached ?
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