I know that the hundreds of wellheads in the city are capped to prevent usage so that the foundations of La Serenissima are preserved.
I know that the water from public fountains is of a high standard to discourage the purchase of bottled water and reduce waste processing and recycling costs.
I know that there are over a hundred of these fountains spread amongst the six districts of Venice.
I don’t know how much energy must be consumed in producing and purifying all the water that is wasted by their continuous flow.
Surely a case for a tap or valve?