The mains water supply has been off for a few hours. A minor inconvenience. What did please me was the text message I received from Severn Trent notifying me of the outage and giving me an estimated time for the resolution of the problem. The water appears to be on its way back an hour ahead of schedule. There is however a downside, I am now faced with the spluttering and gurgling of the pipework as everything re-pressurises and the air in the pipes escapes.