Always ensure you can and do isolate the taps from inside when you go on holiday or away for a few days.
Customer 1,i was standing in the kitchen of his very large house,and said despite all the drought,you seem to have a large pond at the botom of your garden,no he says,then turns white and runs out.
It appears the neighbour had been useing his hosepipe and had left it running for possibly 2 weeks while he was on holiday,and he was on a water meter.
Customer 2,put an outside tap in for his daughter,few weeks later she had a house warming party,a few of her freinds thought it funny,to put the hose through the cat flap and turn the water on,almost total destruction of the ground floor,due to flooding.