Came back at least two hours later to find I'd forgotten to turn off the garden hose after watering the plants, then going shopping. It was only on at a moderate flow -- more than a trickle, but significant. I've just read the meter under the pavement and worked out (extrapolating from my previous bill) how much has gone. The estimated reading for 20/Aug/12 based on past consumption should be 446. The actual reading is 448.68, so I've wasted over 2.5m³, which is a heck of a lot. So I'm planning on emergency measures like all-over washes instead of baths for the next three months.
But as I get older and more forgetful, is there a gadget I can fit to either turn off the tap automatically or warn if it's left on? Okay, so I wouldn't have heard a warning while out shopping, but I was back home for at least half an hour before going out into the garden and then noticing the lake of water on the lawn.
MM