Why would anyone save water if their water supply was not metered?

"Reg Edwards" wrote in message
...
This may be fine for some amateurs. But what about the people in
southern England where the present water shortage will cause the
goverment to introduce compulsory metering of domestic water supplies.
It's something to do with Earth warming, man-made climatic
disturbance, and the price of a glass of clean drinking water in
London.