If you have a leak on your supply pipe, it is your responsibility (if you are the property owner) to ensure that the leak is repaired promptly. There are a number of simple checks you can do to check whether you have a leak.
If you have a meter, make sure that no water is being used in the property and that all taps are turned off, then simply look at the meter for a couple of minutes. None of the dials should move. If they do then there may be a leak on the supply pipe.
If you have automatic flushing urinals check that they are set properly. They should only flush once every 20 minutes.