The system and method for detecting water and/or gas leaks by monitoring usage patterns is described. In one embodiment, the existence of a leak is detected by looking for usage patterns wherein water or gas is always being used, at least at a low rate. A leak is indicated if usage does not drop to zero,...http://www.google.co.uk/patents/US7412876?utm_source=gb-gplus-sharePatent US7412876 - System and method for utility metering and leak detection
